Trait PositionalArguments 

pub trait PositionalArguments<'v, V>
where
    V: 'v + FormatArgument,
{
    type Iter: Iterator<Item = &'v V>;

    // Required methods
    fn get(&self, index: usize) -> Option<&V>;
    fn iter(&'v self) -> Self::Iter;
}

A type that provides a list of arguments, randomly accessible by their position.

Required Associated Types

type Iter: Iterator<Item = &'v V>

The type of the iterator that can be used to iterate over arguments.

Required Methods

fn get(&self, index: usize) -> Option<&V>

Returns a reference to the argument at the given index, if any.

fn iter(&'v self) -> Self::Iter

Creates an iterator over the arguments.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl<'v, V> PositionalArguments<'v, V> for NoPositionalArguments

where V: 'v + FormatArgument,

type Iter = Empty<&'v V>

impl<'v, V, T> PositionalArguments<'v, V> for T

where V: 'v + FormatArgument, T: AsRef<[V]> + ?Sized,

type Iter = Iter<'v, V>