Enum Arg 

pub enum Arg<'a> {
    Short(&'a str),
    Long(&'a str),
    Value(&'a OsStr),
    Escape(&'a str),
    Unexpected(&'a OsStr),
}

A command line argument found by Parser, either an option or a positional argument

Variants

Short(&'a str)

A short option, e.g. Short("q") for -q

Long(&'a str)

A long option, e.g. Long("verbose") for --verbose

The dashes are not included

Value(&'a OsStr)

A positional argument, e.g. /dev/null

Escape(&'a str)

Marks the following values have been escaped with --

Unexpected(&'a OsStr)

User passed something in that doesn’t work

Trait Implementations

impl<'a> Clone for Arg<'a>

fn clone(&self) -> Arg<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for Arg<'a>

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

Formats the value using the given formatter.

impl<'a> PartialEq for Arg<'a>

fn eq(&self, other: &Arg<'a>) -> bool

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'a> Copy for Arg<'a>

impl<'a> Eq for Arg<'a>

impl<'a> StructuralPartialEq for Arg<'a>