Trait rocket::mtls::oid::asn1_rs::nom::lib::std::convert::TryFrom

1.34.0 · source ·
pub trait TryFrom<T>: Sized {
    type Error;

    // Required method
    fn try_from(value: T) -> Result<Self, Self::Error>;
}
Available on crate feature mtls only.
Expand description

Simple and safe type conversions that may fail in a controlled way under some circumstances. It is the reciprocal of TryInto.

This is useful when you are doing a type conversion that may trivially succeed but may also need special handling. For example, there is no way to convert an i64 into an i32 using the From trait, because an i64 may contain a value that an i32 cannot represent and so the conversion would lose data. This might be handled by truncating the i64 to an i32 or by simply returning i32::MAX, or by some other method. The From trait is intended for perfect conversions, so the TryFrom trait informs the programmer when a type conversion could go bad and lets them decide how to handle it.

§Generic Implementations

  • TryFrom<T> for U implies TryInto<U> for T
  • try_from is reflexive, which means that TryFrom<T> for T is implemented and cannot fail – the associated Error type for calling T::try_from() on a value of type T is Infallible. When the ! type is stabilized Infallible and ! will be equivalent.

TryFrom<T> can be implemented as follows:

struct GreaterThanZero(i32);

impl TryFrom<i32> for GreaterThanZero {
    type Error = &'static str;

    fn try_from(value: i32) -> Result<Self, Self::Error> {
        if value <= 0 {
            Err("GreaterThanZero only accepts values greater than zero!")
        } else {
            Ok(GreaterThanZero(value))
        }
    }
}

§Examples

As described, i32 implements TryFrom<i64>:

let big_number = 1_000_000_000_000i64;
// Silently truncates `big_number`, requires detecting
// and handling the truncation after the fact.
let smaller_number = big_number as i32;
assert_eq!(smaller_number, -727379968);

// Returns an error because `big_number` is too big to
// fit in an `i32`.
let try_smaller_number = i32::try_from(big_number);
assert!(try_smaller_number.is_err());

// Returns `Ok(3)`.
let try_successful_smaller_number = i32::try_from(3);
assert!(try_successful_smaller_number.is_ok());

Required Associated Types§

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type Error

The type returned in the event of a conversion error.

Required Methods§

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fn try_from(value: T) -> Result<Self, Self::Error>

Performs the conversion.

Object Safety§

This trait is not object safe.

Implementors§

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impl TryFrom<&str> for ServerName

Attempt to make a ServerName from a string by parsing it as a DNS name.

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impl TryFrom<&str> for Uuid

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type Error = Error

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impl TryFrom<&str> for base64::alphabet::Alphabet

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impl TryFrom<&str> for base64::alphabet::Alphabet

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impl TryFrom<&BigInt> for i8

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impl TryFrom<&BigInt> for i16

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impl TryFrom<&BigInt> for i32

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impl TryFrom<&BigInt> for i64

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impl TryFrom<&BigInt> for i128

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impl TryFrom<&BigInt> for isize

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impl TryFrom<&BigInt> for u8

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impl TryFrom<&BigInt> for u16

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impl TryFrom<&BigInt> for u32

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impl TryFrom<&BigInt> for u64

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impl TryFrom<&BigInt> for u128

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impl TryFrom<&BigInt> for usize

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impl TryFrom<&BigInt> for BigUint

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impl TryFrom<&BigUint> for i8

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impl TryFrom<&BigUint> for i16

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impl TryFrom<&BigUint> for i32

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impl TryFrom<&BigUint> for i64

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impl TryFrom<&BigUint> for i128

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impl TryFrom<&BigUint> for isize

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impl TryFrom<&BigUint> for u8

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impl TryFrom<&BigUint> for u16

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impl TryFrom<&BigUint> for u32

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impl TryFrom<&BigUint> for u64

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impl TryFrom<&BigUint> for u128

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impl TryFrom<&BigUint> for usize

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impl TryFrom<&String> for http::uri::path::PathAndQuery

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impl TryFrom<&String> for http::uri::path::PathAndQuery

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impl TryFrom<&[u8]> for ObjectIdentifier

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type Error = Error

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impl TryFrom<&[u8]> for Key

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impl TryFrom<&[u8]> for ReasonPhrase

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type Error = InvalidReasonPhrase

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impl TryFrom<&[u8]> for Tag

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impl TryFrom<Error> for Format

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impl TryFrom<Error> for InvalidFormatDescription

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impl TryFrom<Error> for Parse

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impl TryFrom<Error> for ParseFromDescription

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impl TryFrom<Error> for TryFromParsed

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impl TryFrom<Error> for ComponentRange

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impl TryFrom<Error> for ConversionRange

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impl TryFrom<Error> for DifferentVariant

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impl TryFrom<Error> for InvalidVariant

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impl TryFrom<Format> for Error

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impl TryFrom<Parse> for ParseFromDescription

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impl TryFrom<Parse> for TryFromParsed

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impl TryFrom<TryFromParsed> for ComponentRange

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impl TryFrom<BorrowedFormatItem<'_>> for Component

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impl TryFrom<OwnedFormatItem> for Component

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impl TryFrom<OwnedFormatItem> for Vec<OwnedFormatItem>

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impl TryFrom<char> for u8

Maps a char with code point in U+0000..=U+00FF to a byte in 0x00..=0xFF with same value, failing if the code point is greater than U+00FF.

See impl From<u8> for char for details on the encoding.

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impl TryFrom<char> for u16

Maps a char with code point in U+0000..=U+FFFF to a u16 in 0x0000..=0xFFFF with same value, failing if the code point is greater than U+FFFF.

This corresponds to the UCS-2 encoding, as specified in ISO/IEC 10646:2003.

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impl TryFrom<i8> for u8

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impl TryFrom<i8> for u16

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impl TryFrom<i8> for u32

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impl TryFrom<i8> for u64

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impl TryFrom<i8> for u128

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impl TryFrom<i8> for usize

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impl TryFrom<i8> for BigUint

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impl TryFrom<i8> for NonZero<i8>

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impl TryFrom<i16> for i8

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impl TryFrom<i16> for u8

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impl TryFrom<i16> for u16

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impl TryFrom<i16> for u32

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impl TryFrom<i16> for u64

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impl TryFrom<i16> for u128

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impl TryFrom<i16> for usize

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impl TryFrom<i16> for BigUint

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impl TryFrom<i16> for NonZero<i16>

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impl TryFrom<i32> for i8

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impl TryFrom<i32> for i16

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impl TryFrom<i32> for isize

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impl TryFrom<i32> for u8

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impl TryFrom<i32> for u16

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impl TryFrom<i32> for u32

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impl TryFrom<i32> for u64

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impl TryFrom<i32> for u128

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impl TryFrom<i32> for usize

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impl TryFrom<i32> for BigUint

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impl TryFrom<i32> for NonZero<i32>

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impl TryFrom<i64> for i8

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impl TryFrom<i64> for i16

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impl TryFrom<i64> for i32

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impl TryFrom<i64> for isize

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impl TryFrom<i64> for u8

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impl TryFrom<i64> for u16

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impl TryFrom<i64> for u32

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impl TryFrom<i64> for u64

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impl TryFrom<i64> for u128

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impl TryFrom<i64> for usize

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impl TryFrom<i64> for BigUint

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impl TryFrom<i64> for NonZero<i64>

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impl TryFrom<i128> for i8

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impl TryFrom<i128> for i16

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impl TryFrom<i128> for i32

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impl TryFrom<i128> for i64

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impl TryFrom<i128> for isize

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impl TryFrom<i128> for u8

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impl TryFrom<i128> for u16

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impl TryFrom<i128> for u32

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impl TryFrom<i128> for u64

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impl TryFrom<i128> for u128

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impl TryFrom<i128> for usize

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impl TryFrom<i128> for BigUint

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impl TryFrom<i128> for NonZero<i128>

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impl TryFrom<isize> for i8

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impl TryFrom<isize> for i16

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impl TryFrom<isize> for i32

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impl TryFrom<isize> for i64

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impl TryFrom<isize> for i128

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impl TryFrom<isize> for u8

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impl TryFrom<isize> for u16

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impl TryFrom<isize> for u32

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impl TryFrom<isize> for u64

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impl TryFrom<isize> for u128

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impl TryFrom<isize> for usize

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impl TryFrom<isize> for BigUint

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impl TryFrom<isize> for NonZero<isize>

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impl TryFrom<u8> for Class

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impl TryFrom<u8> for RevocationReason

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type Error = Error

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impl TryFrom<u8> for Month

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impl TryFrom<u8> for i8

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impl TryFrom<u8> for NonZero<u8>

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impl TryFrom<u16> for i8

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impl TryFrom<u16> for i16

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impl TryFrom<u16> for isize

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impl TryFrom<u16> for u8

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impl TryFrom<u16> for NonZero<u16>

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impl TryFrom<u16> for http::status::StatusCode

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impl TryFrom<u16> for http::status::StatusCode

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impl TryFrom<u32> for char

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impl TryFrom<u32> for i8

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impl TryFrom<u32> for i16

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impl TryFrom<u32> for i32

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impl TryFrom<u32> for isize

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impl TryFrom<u32> for u8

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impl TryFrom<u32> for u16

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impl TryFrom<u32> for usize

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impl TryFrom<u32> for NonZero<u32>

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impl TryFrom<u64> for i8

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impl TryFrom<u64> for i16

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impl TryFrom<u64> for i32

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impl TryFrom<u64> for i64

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impl TryFrom<u64> for isize

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impl TryFrom<u64> for u8

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impl TryFrom<u64> for u16

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impl TryFrom<u64> for u32

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impl TryFrom<u64> for usize

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impl TryFrom<u64> for NonZero<u64>

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impl TryFrom<u128> for i8

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impl TryFrom<u128> for i16

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impl TryFrom<u128> for i32

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impl TryFrom<u128> for i64

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impl TryFrom<u128> for i128

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impl TryFrom<u128> for isize

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impl TryFrom<u128> for u8

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impl TryFrom<u128> for u16

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impl TryFrom<u128> for u32

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impl TryFrom<u128> for u64

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impl TryFrom<u128> for usize

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impl TryFrom<u128> for NonZero<u128>

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impl TryFrom<usize> for i8

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impl TryFrom<usize> for i16

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impl TryFrom<usize> for i32

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impl TryFrom<usize> for i64

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impl TryFrom<usize> for i128

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impl TryFrom<usize> for isize

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impl TryFrom<usize> for u8

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impl TryFrom<usize> for u16

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impl TryFrom<usize> for u32

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impl TryFrom<usize> for u64

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impl TryFrom<usize> for u128

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impl TryFrom<usize> for NonZero<usize>

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impl TryFrom<usize> for Alignment

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impl TryFrom<BigInt> for i8

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impl TryFrom<BigInt> for i16

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impl TryFrom<BigInt> for i32

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impl TryFrom<BigInt> for i64

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impl TryFrom<BigInt> for i128

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impl TryFrom<BigInt> for isize

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impl TryFrom<BigInt> for u8

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impl TryFrom<BigInt> for u16

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impl TryFrom<BigInt> for u32

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impl TryFrom<BigInt> for u64

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impl TryFrom<BigInt> for u128

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impl TryFrom<BigInt> for usize

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impl TryFrom<BigInt> for BigUint

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impl TryFrom<BigUint> for i8

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impl TryFrom<BigUint> for i16

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impl TryFrom<BigUint> for i32

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impl TryFrom<BigUint> for i64

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impl TryFrom<BigUint> for i128

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impl TryFrom<BigUint> for isize

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impl TryFrom<BigUint> for u8

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impl TryFrom<BigUint> for u16

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impl TryFrom<BigUint> for u32

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impl TryFrom<BigUint> for u64

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impl TryFrom<BigUint> for u128

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impl TryFrom<BigUint> for usize

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impl TryFrom<Integer<'_>> for i8

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type Error = Error

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impl TryFrom<Integer<'_>> for i16

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type Error = Error

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impl TryFrom<Integer<'_>> for i32

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type Error = Error

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impl TryFrom<Integer<'_>> for i64

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type Error = Error

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impl TryFrom<Integer<'_>> for i128

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type Error = Error

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impl TryFrom<Integer<'_>> for u8

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type Error = Error

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impl TryFrom<Integer<'_>> for u16

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type Error = Error

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impl TryFrom<Integer<'_>> for u32

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type Error = Error

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impl TryFrom<Integer<'_>> for u64

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type Error = Error

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impl TryFrom<Integer<'_>> for u128

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type Error = Error

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impl TryFrom<String> for Absolute<'static>

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type Error = Error<'static>

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impl TryFrom<String> for rocket::http::uri::Authority<'static>

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type Error = Error<'static>

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impl TryFrom<String> for Host<'static>

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type Error = Error<'static>

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impl TryFrom<String> for Origin<'static>

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type Error = Error<'static>

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impl TryFrom<String> for Reference<'static>

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type Error = Error<'static>

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impl TryFrom<String> for http::header::name::HeaderName

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impl TryFrom<String> for http::header::value::HeaderValue

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impl TryFrom<String> for http::uri::authority::Authority

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impl TryFrom<String> for http::uri::path::PathAndQuery

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impl TryFrom<String> for http::uri::Uri

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impl TryFrom<String> for http::header::name::HeaderName

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impl TryFrom<String> for http::header::value::HeaderValue

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impl TryFrom<String> for http::uri::authority::Authority

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impl TryFrom<String> for http::uri::path::PathAndQuery

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impl TryFrom<String> for http::uri::Uri

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impl TryFrom<String> for ReasonPhrase

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type Error = InvalidReasonPhrase

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impl TryFrom<String> for DnsName

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impl TryFrom<Vec<u8>> for Uuid

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type Error = Error

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impl TryFrom<Vec<u8>> for http::header::name::HeaderName

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impl TryFrom<Vec<u8>> for http::header::value::HeaderValue

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impl TryFrom<Vec<u8>> for http::uri::authority::Authority

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impl TryFrom<Vec<u8>> for http::header::name::HeaderName

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impl TryFrom<Vec<u8>> for http::header::value::HeaderValue

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impl TryFrom<Vec<u8>> for http::uri::authority::Authority

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impl TryFrom<Vec<u8>> for http::uri::path::PathAndQuery

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impl TryFrom<Vec<u8>> for http::uri::Uri

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impl TryFrom<Vec<u8>> for ReasonPhrase

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type Error = InvalidReasonPhrase

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impl TryFrom<NonZero<i8>> for NonZero<u8>

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impl TryFrom<NonZero<i8>> for NonZero<u16>

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impl TryFrom<NonZero<i8>> for NonZero<u32>

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impl TryFrom<NonZero<i8>> for NonZero<u64>

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impl TryFrom<NonZero<i8>> for NonZero<u128>

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impl TryFrom<NonZero<i8>> for NonZero<usize>

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impl TryFrom<NonZero<i16>> for NonZero<i8>

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impl TryFrom<NonZero<i16>> for NonZero<u8>

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impl TryFrom<NonZero<i16>> for NonZero<u16>

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impl TryFrom<NonZero<i16>> for NonZero<u32>

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impl TryFrom<NonZero<i16>> for NonZero<u64>

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impl TryFrom<NonZero<i16>> for NonZero<u128>

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impl TryFrom<NonZero<i16>> for NonZero<usize>

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impl TryFrom<NonZero<i32>> for NonZero<i8>

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impl TryFrom<NonZero<i32>> for NonZero<i16>

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impl TryFrom<NonZero<i32>> for NonZero<isize>

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impl TryFrom<NonZero<i32>> for NonZero<u8>

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impl TryFrom<NonZero<i32>> for NonZero<u16>

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impl TryFrom<NonZero<i32>> for NonZero<u32>

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impl TryFrom<NonZero<i32>> for NonZero<u64>

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impl TryFrom<NonZero<i32>> for NonZero<u128>

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impl TryFrom<NonZero<i32>> for NonZero<usize>

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impl TryFrom<NonZero<i64>> for NonZero<i8>

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impl TryFrom<NonZero<i64>> for NonZero<i16>

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impl TryFrom<NonZero<i64>> for NonZero<i32>

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impl TryFrom<NonZero<i64>> for NonZero<isize>

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impl TryFrom<NonZero<i64>> for NonZero<u8>

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impl TryFrom<NonZero<i64>> for NonZero<u16>

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impl TryFrom<NonZero<i64>> for NonZero<u32>

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impl TryFrom<NonZero<i64>> for NonZero<u64>

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impl TryFrom<NonZero<i64>> for NonZero<u128>

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impl TryFrom<NonZero<i64>> for NonZero<usize>

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impl TryFrom<NonZero<i128>> for NonZero<i8>

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impl TryFrom<NonZero<i128>> for NonZero<i16>

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impl TryFrom<NonZero<i128>> for NonZero<i32>

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impl TryFrom<NonZero<i128>> for NonZero<i64>

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impl TryFrom<NonZero<i128>> for NonZero<isize>

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impl TryFrom<NonZero<i128>> for NonZero<u8>

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impl TryFrom<NonZero<i128>> for NonZero<u16>

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impl TryFrom<NonZero<i128>> for NonZero<u32>

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impl TryFrom<NonZero<i128>> for NonZero<u64>

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impl TryFrom<NonZero<i128>> for NonZero<u128>

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impl TryFrom<NonZero<i128>> for NonZero<usize>

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impl TryFrom<NonZero<isize>> for NonZero<i8>

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impl TryFrom<NonZero<isize>> for NonZero<i16>

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impl TryFrom<NonZero<isize>> for NonZero<i32>

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impl TryFrom<NonZero<isize>> for NonZero<i64>

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impl TryFrom<NonZero<isize>> for NonZero<i128>

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impl TryFrom<NonZero<isize>> for NonZero<u8>

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impl TryFrom<NonZero<isize>> for NonZero<u16>

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impl TryFrom<NonZero<isize>> for NonZero<u32>

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impl TryFrom<NonZero<isize>> for NonZero<u64>

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impl TryFrom<NonZero<isize>> for NonZero<u128>

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impl TryFrom<NonZero<isize>> for NonZero<usize>

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impl TryFrom<NonZero<u8>> for NonZero<i8>

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impl TryFrom<NonZero<u16>> for NonZero<i8>

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impl TryFrom<NonZero<u16>> for NonZero<i16>

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impl TryFrom<NonZero<u16>> for NonZero<isize>

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impl TryFrom<NonZero<u16>> for NonZero<u8>

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impl TryFrom<NonZero<u32>> for NonZero<i8>

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impl TryFrom<NonZero<u32>> for NonZero<i16>

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impl TryFrom<NonZero<u32>> for NonZero<i32>

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impl TryFrom<NonZero<u32>> for NonZero<isize>

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impl TryFrom<NonZero<u32>> for NonZero<u8>

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impl TryFrom<NonZero<u32>> for NonZero<u16>

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impl TryFrom<NonZero<u32>> for NonZero<usize>

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impl TryFrom<NonZero<u64>> for NonZero<i8>

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impl TryFrom<NonZero<u64>> for NonZero<i16>

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impl TryFrom<NonZero<u64>> for NonZero<i32>

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impl TryFrom<NonZero<u64>> for NonZero<i64>

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impl TryFrom<NonZero<u64>> for NonZero<isize>

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impl TryFrom<NonZero<u64>> for NonZero<u8>

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impl TryFrom<NonZero<u64>> for NonZero<u16>

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impl TryFrom<NonZero<u64>> for NonZero<u32>

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impl TryFrom<NonZero<u64>> for NonZero<usize>

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impl TryFrom<NonZero<u128>> for NonZero<i8>

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impl TryFrom<NonZero<u128>> for NonZero<i16>

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impl TryFrom<NonZero<u128>> for NonZero<i32>

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impl TryFrom<NonZero<u128>> for NonZero<i64>

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impl TryFrom<NonZero<u128>> for NonZero<i128>

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impl TryFrom<NonZero<u128>> for NonZero<isize>

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impl TryFrom<NonZero<u128>> for NonZero<u8>

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impl TryFrom<NonZero<u128>> for NonZero<u16>

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impl TryFrom<NonZero<u128>> for NonZero<u32>

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impl TryFrom<NonZero<u128>> for NonZero<u64>

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impl TryFrom<NonZero<u128>> for NonZero<usize>

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impl TryFrom<NonZero<usize>> for NonZero<i8>

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impl TryFrom<NonZero<usize>> for NonZero<i16>

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impl TryFrom<NonZero<usize>> for NonZero<i32>

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impl TryFrom<NonZero<usize>> for NonZero<i64>

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impl TryFrom<NonZero<usize>> for NonZero<i128>

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impl TryFrom<NonZero<usize>> for NonZero<isize>

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impl TryFrom<NonZero<usize>> for NonZero<u8>

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impl TryFrom<NonZero<usize>> for NonZero<u16>

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impl TryFrom<NonZero<usize>> for NonZero<u32>

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impl TryFrom<NonZero<usize>> for NonZero<u64>

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impl TryFrom<NonZero<usize>> for NonZero<u128>

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impl TryFrom<NonZero<usize>> for Alignment

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impl TryFrom<Duration> for time::duration::Duration

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impl TryFrom<TcpListener> for TcpListener

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type Error = Error

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impl TryFrom<TcpStream> for TcpStream

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type Error = Error

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impl TryFrom<UdpSocket> for UdpSocket

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type Error = Error

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impl TryFrom<UnixDatagram> for UnixDatagram

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type Error = Error

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impl TryFrom<UnixListener> for UnixListener

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type Error = Error

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impl TryFrom<UnixStream> for UnixStream

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type Error = Error

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impl TryFrom<SystemTime> for webpki::time::Time

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impl TryFrom<Bytes> for ReasonPhrase

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type Error = InvalidReasonPhrase

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impl TryFrom<Parts> for http::uri::Uri

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impl TryFrom<Parts> for http::uri::Uri

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impl TryFrom<PlainMessage> for Message

Parses a plaintext message into a well-typed Message.

A PlainMessage must contain plaintext content. Encrypted content should be stored in an OpaqueMessage and decrypted before being stored into a PlainMessage.

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type Error = Error

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impl TryFrom<Duration> for core::time::Duration

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impl TryFrom<Parsed> for Date

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impl TryFrom<Parsed> for OffsetDateTime

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impl TryFrom<Parsed> for PrimitiveDateTime

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impl TryFrom<Parsed> for time::time::Time

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impl TryFrom<Parsed> for UtcOffset

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impl<'a> TryFrom<&'a str> for Absolute<'a>

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type Error = Error<'a>

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impl<'a> TryFrom<&'a str> for rocket::http::uri::Authority<'a>

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type Error = Error<'a>

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impl<'a> TryFrom<&'a str> for Host<'a>

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type Error = Error<'a>

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impl<'a> TryFrom<&'a str> for Origin<'a>

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type Error = Error<'a>

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impl<'a> TryFrom<&'a str> for Reference<'a>

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type Error = Error<'a>

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impl<'a> TryFrom<&'a str> for http::header::name::HeaderName

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impl<'a> TryFrom<&'a str> for http::header::value::HeaderValue

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impl<'a> TryFrom<&'a str> for http::method::Method

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impl<'a> TryFrom<&'a str> for http::status::StatusCode

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impl<'a> TryFrom<&'a str> for http::uri::authority::Authority

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impl<'a> TryFrom<&'a str> for http::uri::path::PathAndQuery

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impl<'a> TryFrom<&'a str> for http::uri::scheme::Scheme

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impl<'a> TryFrom<&'a str> for http::uri::Uri

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impl<'a> TryFrom<&'a str> for http::header::name::HeaderName

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impl<'a> TryFrom<&'a str> for http::header::value::HeaderValue

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impl<'a> TryFrom<&'a str> for http::method::Method

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impl<'a> TryFrom<&'a str> for http::status::StatusCode

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impl<'a> TryFrom<&'a str> for http::uri::authority::Authority

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impl<'a> TryFrom<&'a str> for http::uri::path::PathAndQuery

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impl<'a> TryFrom<&'a str> for http::uri::scheme::Scheme

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impl<'a> TryFrom<&'a str> for http::uri::Uri

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impl<'a> TryFrom<&'a String> for Absolute<'a>

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type Error = Error<'a>

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impl<'a> TryFrom<&'a String> for rocket::http::uri::Authority<'a>

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type Error = Error<'a>

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impl<'a> TryFrom<&'a String> for Host<'a>

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type Error = Error<'a>

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impl<'a> TryFrom<&'a String> for Origin<'a>

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type Error = Error<'a>

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impl<'a> TryFrom<&'a String> for Reference<'a>

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type Error = Error<'a>

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impl<'a> TryFrom<&'a String> for http::header::name::HeaderName

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impl<'a> TryFrom<&'a String> for http::header::value::HeaderValue

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impl<'a> TryFrom<&'a String> for http::uri::Uri

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impl<'a> TryFrom<&'a String> for http::header::name::HeaderName

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impl<'a> TryFrom<&'a String> for http::header::value::HeaderValue

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impl<'a> TryFrom<&'a String> for http::uri::Uri

1.72.0 · source§

impl<'a> TryFrom<&'a OsStr> for &'a str

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impl<'a> TryFrom<&'a Uri> for http::uri::Uri

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type Error = Error

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impl<'a> TryFrom<&'a Uri> for http::uri::Uri

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type Error = Error

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impl<'a> TryFrom<&'a Certificate> for ParsedCertificate<'a>

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type Error = Error

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impl<'a> TryFrom<&'a [u8]> for http::header::name::HeaderName

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impl<'a> TryFrom<&'a [u8]> for http::header::value::HeaderValue

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impl<'a> TryFrom<&'a [u8]> for http::method::Method

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impl<'a> TryFrom<&'a [u8]> for http::status::StatusCode

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impl<'a> TryFrom<&'a [u8]> for http::uri::authority::Authority

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impl<'a> TryFrom<&'a [u8]> for http::uri::path::PathAndQuery

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impl<'a> TryFrom<&'a [u8]> for http::uri::scheme::Scheme

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impl<'a> TryFrom<&'a [u8]> for http::uri::Uri

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impl<'a> TryFrom<&'a [u8]> for http::header::name::HeaderName

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impl<'a> TryFrom<&'a [u8]> for http::header::value::HeaderValue

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impl<'a> TryFrom<&'a [u8]> for http::method::Method

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impl<'a> TryFrom<&'a [u8]> for http::status::StatusCode

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impl<'a> TryFrom<&'a [u8]> for http::uri::authority::Authority

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impl<'a> TryFrom<&'a [u8]> for http::uri::path::PathAndQuery

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impl<'a> TryFrom<&'a [u8]> for http::uri::scheme::Scheme

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impl<'a> TryFrom<&'a [u8]> for http::uri::Uri

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impl<'a> TryFrom<&'a [u8]> for EndEntityCert<'a>

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type Error = Error

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impl<'a> TryFrom<Uri<'a>> for Absolute<'a>

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impl<'a> TryFrom<Uri<'a>> for Asterisk

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impl<'a> TryFrom<Uri<'a>> for rocket::http::uri::Authority<'a>

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impl<'a> TryFrom<Uri<'a>> for Origin<'a>

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impl<'a> TryFrom<Uri<'a>> for Reference<'a>

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impl<'a> TryFrom<BorrowedFormatItem<'a>> for &[BorrowedFormatItem<'a>]

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impl<'a> TryFrom<AttributeTypeAndValue<'a>> for &'a str

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impl<'a> TryFrom<AttributeTypeAndValue<'a>> for &'a [u8]

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impl<'a> TryFrom<Any<'a>> for &'a str

§

type Error = Error

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impl<'a> TryFrom<Any<'a>> for &'a [u8]

§

type Error = Error

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impl<'a> TryFrom<Any<'a>> for Real

§

type Error = Error

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impl<'a> TryFrom<Any<'a>> for bool

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type Error = Error

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impl<'a> TryFrom<Any<'a>> for f32

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type Error = Error

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impl<'a> TryFrom<Any<'a>> for f64

§

type Error = Error

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impl<'a> TryFrom<Any<'a>> for i8

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type Error = Error

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impl<'a> TryFrom<Any<'a>> for i16

§

type Error = Error

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impl<'a> TryFrom<Any<'a>> for i32

§

type Error = Error

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impl<'a> TryFrom<Any<'a>> for i64

§

type Error = Error

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impl<'a> TryFrom<Any<'a>> for i128

§

type Error = Error

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impl<'a> TryFrom<Any<'a>> for u8

§

type Error = Error

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impl<'a> TryFrom<Any<'a>> for u16

§

type Error = Error

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impl<'a> TryFrom<Any<'a>> for u32

§

type Error = Error

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impl<'a> TryFrom<Any<'a>> for u64

§

type Error = Error

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impl<'a> TryFrom<Any<'a>> for u128

§

type Error = Error

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impl<'a> TryFrom<Any<'a>> for ()

§

type Error = Error

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impl<'a> TryFrom<Any<'a>> for Oid<'a>

§

type Error = Error

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impl<'a> TryFrom<Any<'a>> for BitString<'a>

§

type Error = Error

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impl<'a> TryFrom<Any<'a>> for BmpString<'a>

§

type Error = Error

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impl<'a> TryFrom<Any<'a>> for Boolean

§

type Error = Error

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impl<'a> TryFrom<Any<'a>> for EmbeddedPdv<'a>

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type Error = Error

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impl<'a> TryFrom<Any<'a>> for EndOfContent

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type Error = Error

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impl<'a> TryFrom<Any<'a>> for Enumerated

§

type Error = Error

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impl<'a> TryFrom<Any<'a>> for GeneralString<'a>

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type Error = Error

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impl<'a> TryFrom<Any<'a>> for GeneralizedTime

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type Error = Error

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impl<'a> TryFrom<Any<'a>> for GraphicString<'a>

§

type Error = Error

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impl<'a> TryFrom<Any<'a>> for Ia5String<'a>

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type Error = Error

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impl<'a> TryFrom<Any<'a>> for Integer<'a>

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type Error = Error

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impl<'a> TryFrom<Any<'a>> for Null

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type Error = Error

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impl<'a> TryFrom<Any<'a>> for NumericString<'a>

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type Error = Error

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impl<'a> TryFrom<Any<'a>> for ObjectDescriptor<'a>

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type Error = Error

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impl<'a> TryFrom<Any<'a>> for OctetString<'a>

§

type Error = Error

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impl<'a> TryFrom<Any<'a>> for PrintableString<'a>

§

type Error = Error

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impl<'a> TryFrom<Any<'a>> for Sequence<'a>

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type Error = Error

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impl<'a> TryFrom<Any<'a>> for Set<'a>

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type Error = Error

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impl<'a> TryFrom<Any<'a>> for TeletexString<'a>

§

type Error = Error

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impl<'a> TryFrom<Any<'a>> for UniversalString<'a>

§

type Error = Error

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impl<'a> TryFrom<Any<'a>> for UtcTime

§

type Error = Error

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impl<'a> TryFrom<Any<'a>> for Utf8String<'a>

§

type Error = Error

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impl<'a> TryFrom<Any<'a>> for VideotexString<'a>

§

type Error = Error

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impl<'a> TryFrom<Any<'a>> for VisibleString<'a>

§

type Error = Error

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impl<'a> TryFrom<Any<'a>> for String

§

type Error = Error

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impl<'a> TryFrom<Vec<u8>> for http::uri::path::PathAndQuery

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impl<'a> TryFrom<Vec<u8>> for http::uri::Uri

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impl<'a> TryFrom<Item<'a>> for BorrowedFormatItem<'a>

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type Error = Error

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impl<'a, K, V, T> TryFrom<&'a HashMap<K, V>> for http::header::map::HeaderMap<T>

Try to convert a HashMap into a HeaderMap.

§Examples

use std::collections::HashMap;
use std::convert::TryInto;
use http::HeaderMap;

let mut map = HashMap::new();
map.insert("X-Custom-Header".to_string(), "my value".to_string());

let headers: HeaderMap = (&map).try_into().expect("valid headers");
assert_eq!(headers["X-Custom-Header"], "my value");
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type Error = Error

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impl<'a, K, V, T> TryFrom<&'a HashMap<K, V>> for http::header::map::HeaderMap<T>

Try to convert a HashMap into a HeaderMap.

§Examples

use std::collections::HashMap;
use std::convert::TryInto;
use http::HeaderMap;

let mut map = HashMap::new();
map.insert("X-Custom-Header".to_string(), "my value".to_string());

let headers: HeaderMap = (&map).try_into().expect("valid headers");
assert_eq!(headers["X-Custom-Header"], "my value");
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type Error = Error

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impl<'a, T> TryFrom<Any<'a>> for SequenceOf<T>
where T: FromBer<'a>,

§

type Error = Error

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impl<'a, T> TryFrom<Any<'a>> for SetOf<T>
where T: FromBer<'a>,

§

type Error = Error

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impl<'a, T> TryFrom<Any<'a>> for BTreeSet<T>
where T: FromBer<'a> + Ord,

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type Error = Error

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impl<'a, T> TryFrom<Any<'a>> for HashSet<T>
where T: FromBer<'a> + Hash + Eq,

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type Error = Error

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impl<'a, T, const CLASS: u8, const TAG: u32> TryFrom<Any<'a>> for TaggedValue<T, Explicit, CLASS, TAG>
where T: FromBer<'a>,

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type Error = Error

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impl<'a, T, const CLASS: u8, const TAG: u32> TryFrom<Any<'a>> for TaggedValue<T, Implicit, CLASS, TAG>
where T: TryFrom<Any<'a>, Error = Error> + Tagged,

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type Error = Error

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impl<'a, T, const N: usize> TryFrom<&'a [T]> for &'a [T; N]

Tries to create an array ref &[T; N] from a slice ref &[T]. Succeeds if slice.len() == N.

let bytes: [u8; 3] = [1, 0, 2];

let bytes_head: &[u8; 2] = <&[u8; 2]>::try_from(&bytes[0..2]).unwrap();
assert_eq!(1, u16::from_le_bytes(*bytes_head));

let bytes_tail: &[u8; 2] = bytes[1..3].try_into().unwrap();
assert_eq!(512, u16::from_le_bytes(*bytes_tail));
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impl<'a, T, const N: usize> TryFrom<&'a mut [T]> for &'a mut [T; N]

Tries to create a mutable array ref &mut [T; N] from a mutable slice ref &mut [T]. Succeeds if slice.len() == N.

let mut bytes: [u8; 3] = [1, 0, 2];

let bytes_head: &mut [u8; 2] = <&mut [u8; 2]>::try_from(&mut bytes[0..2]).unwrap();
assert_eq!(1, u16::from_le_bytes(*bytes_head));

let bytes_tail: &mut [u8; 2] = (&mut bytes[1..3]).try_into().unwrap();
assert_eq!(512, u16::from_le_bytes(*bytes_tail));
1.48.0 · source§

impl<T, A, const N: usize> TryFrom<Vec<T, A>> for [T; N]
where A: Allocator,

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type Error = Vec<T, A>

1.43.0 · source§

impl<T, A, const N: usize> TryFrom<Arc<[T], A>> for Arc<[T; N], A>
where A: Allocator,

§

type Error = Arc<[T], A>

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impl<T, A, const N: usize> TryFrom<Box<[T], A>> for allocator_api2::stable::boxed::Box<[T; N], A>
where A: Allocator,

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type Error = Box<[T], A>

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impl<T, A, const N: usize> TryFrom<Vec<T, A>> for [T; N]
where A: Allocator,

§

type Error = Vec<T, A>

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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impl<T, const N: usize> TryFrom<&[T]> for [T; N]
where T: Copy,

Tries to create an array [T; N] by copying from a slice &[T]. Succeeds if slice.len() == N.

let bytes: [u8; 3] = [1, 0, 2];

let bytes_head: [u8; 2] = <[u8; 2]>::try_from(&bytes[0..2]).unwrap();
assert_eq!(1, u16::from_le_bytes(bytes_head));

let bytes_tail: [u8; 2] = bytes[1..3].try_into().unwrap();
assert_eq!(512, u16::from_le_bytes(bytes_tail));
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impl<T, const N: usize> TryFrom<&[T]> for Simd<T, N>

1.59.0 · source§

impl<T, const N: usize> TryFrom<&mut [T]> for [T; N]
where T: Copy,

Tries to create an array [T; N] by copying from a mutable slice &mut [T]. Succeeds if slice.len() == N.

let mut bytes: [u8; 3] = [1, 0, 2];

let bytes_head: [u8; 2] = <[u8; 2]>::try_from(&mut bytes[0..2]).unwrap();
assert_eq!(1, u16::from_le_bytes(bytes_head));

let bytes_tail: [u8; 2] = (&mut bytes[1..3]).try_into().unwrap();
assert_eq!(512, u16::from_le_bytes(bytes_tail));
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impl<T, const N: usize> TryFrom<&mut [T]> for Simd<T, N>

1.43.0 · source§

impl<T, const N: usize> TryFrom<Box<[T]>> for rocket::mtls::oid::asn1_rs::nom::lib::std::boxed::Box<[T; N]>

§

type Error = Box<[T]>

1.66.0 · source§

impl<T, const N: usize> TryFrom<Vec<T>> for rocket::mtls::oid::asn1_rs::nom::lib::std::boxed::Box<[T; N]>

§

type Error = Vec<T>

1.43.0 · source§

impl<T, const N: usize> TryFrom<Rc<[T]>> for Rc<[T; N]>

§

type Error = Rc<[T]>

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impl<const MIN: i8, const MAX: i8> TryFrom<i8> for RangedI8<MIN, MAX>

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impl<const MIN: i16, const MAX: i16> TryFrom<i16> for RangedI16<MIN, MAX>

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impl<const MIN: i32, const MAX: i32> TryFrom<i32> for RangedI32<MIN, MAX>

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impl<const MIN: i64, const MAX: i64> TryFrom<i64> for RangedI64<MIN, MAX>

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impl<const MIN: i128, const MAX: i128> TryFrom<i128> for RangedI128<MIN, MAX>

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impl<const MIN: isize, const MAX: isize> TryFrom<isize> for RangedIsize<MIN, MAX>

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impl<const MIN: u8, const MAX: u8> TryFrom<u8> for RangedU8<MIN, MAX>

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impl<const MIN: u16, const MAX: u16> TryFrom<u16> for RangedU16<MIN, MAX>

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impl<const MIN: u32, const MAX: u32> TryFrom<u32> for RangedU32<MIN, MAX>

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impl<const MIN: u64, const MAX: u64> TryFrom<u64> for RangedU64<MIN, MAX>

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impl<const MIN: u128, const MAX: u128> TryFrom<u128> for RangedU128<MIN, MAX>

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impl<const MIN: usize, const MAX: usize> TryFrom<usize> for RangedUsize<MIN, MAX>