rocket_dyn_templates::minijinja::value

Function from_args

Source
pub fn from_args<'a, Args>(values: &'a [Value]) -> Result<Args, Error>
where Args: FunctionArgs<'a, Output = Args>,
Expand description

Utility function to convert a slice of values into arguments.

This performs the same conversion that Function performs. It exists so that you one can leverage the same functionality when implementing Object::call_method.

// args is &[Value]
let (string, num): (&str, i64) = from_args(args)?;

Note that only value conversions are supported which means that &State is not a valid conversion type.

You can also use this function to split positional and keyword arguments (Kwargs):

// args is &[Value], kwargs is Kwargs
let (args, kwargs): (&[Value], Kwargs) = from_args(args)?;