Trait rocket::mtls::oid::asn1_rs::nom::lib::std::fmt::LowerHex

1.0.0 · source ·
pub trait LowerHex {
    // Required method
    fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>;
}
Available on crate feature mtls only.
Expand description

x formatting.

The LowerHex trait should format its output as a number in hexadecimal, with a through f in lower case.

For primitive signed integers (i8 to i128, and isize), negative values are formatted as the two’s complement representation.

The alternate flag, #, adds a 0x in front of the output.

For more information on formatters, see the module-level documentation.

§Examples

Basic usage with i32:

let x = 42; // 42 is '2a' in hex

assert_eq!(format!("{x:x}"), "2a");
assert_eq!(format!("{x:#x}"), "0x2a");

assert_eq!(format!("{:x}", -16), "fffffff0");

Implementing LowerHex on a type:

use std::fmt;

struct Length(i32);

impl fmt::LowerHex for Length {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        let val = self.0;

        fmt::LowerHex::fmt(&val, f) // delegate to i32's implementation
    }
}

let l = Length(9);

assert_eq!(format!("l as hex is: {l:x}"), "l as hex is: 9");

assert_eq!(format!("l as hex is: {l:#010x}"), "l as hex is: 0x00000009");

Required Methods§

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

Implementors§

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impl LowerHex for i8

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impl LowerHex for i16

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impl LowerHex for i32

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impl LowerHex for i64

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impl LowerHex for i128

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impl LowerHex for isize

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impl LowerHex for u8

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impl LowerHex for u16

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impl LowerHex for u32

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impl LowerHex for u64

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impl LowerHex for u128

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impl LowerHex for usize

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impl LowerHex for Braced

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impl LowerHex for Hyphenated

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impl LowerHex for Simple

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impl LowerHex for Urn

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impl LowerHex for Uuid

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impl LowerHex for BigInt

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impl LowerHex for BigUint

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impl LowerHex for NonZero<i8>

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impl LowerHex for NonZero<i16>

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impl LowerHex for NonZero<i32>

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impl LowerHex for NonZero<i64>

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impl LowerHex for NonZero<i128>

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impl LowerHex for NonZero<isize>

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impl LowerHex for NonZero<u8>

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impl LowerHex for NonZero<u16>

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impl LowerHex for NonZero<u32>

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impl LowerHex for NonZero<u64>

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impl LowerHex for NonZero<u128>

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impl LowerHex for NonZero<usize>

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impl LowerHex for bytes::bytes::Bytes

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impl LowerHex for BytesMut

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impl LowerHex for Access

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impl LowerHex for AtFlags

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impl LowerHex for Bytes

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impl LowerHex for CreateFlags

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impl LowerHex for DupFlags

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impl LowerHex for FallocateFlags

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impl LowerHex for FdFlags

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impl LowerHex for IFlags

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impl LowerHex for MemfdFlags

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impl LowerHex for Mode

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impl LowerHex for MountFlags

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impl LowerHex for MountPropagationFlags

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impl LowerHex for OFlags

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impl LowerHex for ReadWriteFlags

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impl LowerHex for RenameFlags

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impl LowerHex for ResolveFlags

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impl LowerHex for SealFlags

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impl LowerHex for StatVfsMountFlags

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impl LowerHex for StatxFlags

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impl LowerHex for UnmountFlags

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impl LowerHex for WatchFlags

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impl LowerHex for XattrFlags

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impl<'a> LowerHex for KeyIdentifier<'a>

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impl<T> LowerHex for &T
where T: LowerHex + ?Sized,

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impl<T> LowerHex for &mut T
where T: LowerHex + ?Sized,

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impl<T> LowerHex for Saturating<T>
where T: LowerHex,

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impl<T> LowerHex for Wrapping<T>
where T: LowerHex,

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impl<T> LowerHex for Painted<T>
where T: LowerHex,

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impl<T> LowerHex for GenericArray<u8, T>
where T: ArrayLength<u8> + Add, <T as Add>::Output: ArrayLength<u8>,

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

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

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

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

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

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

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

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

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

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

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

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