Enum ArgName 

pub enum ArgName {
    Index(usize),
    Name(&'static str),
}

How a format string refers to an argument.

Variants

Index(usize)

The n-th positional argument

Name(&'static str)

A named argument, or a variable captured from scope

Trait Implementations

impl Clone for ArgName

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for ArgName

impl Debug for ArgName

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

Formats the value using the given formatter.

impl Eq for ArgName

impl PartialEq for ArgName

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for ArgName