Struct Mode 

pub struct Mode { /* private fields */ }

Configuration for customizing the argument parsing behavior

Examples

The default configuration disables all non-portable extensions:

let mode = Mode::default();
assert!(!mode.accepts_long_options());

The with_extensions function returns a Mode with those extensions enabled.

let mode = Mode::with_extensions();
assert!(mode.accepts_long_options());

Implementations

impl Mode

pub const fn with_extensions() -> Self

Returns a new Mode with non-portable extensions enabled.

pub fn with_env<S>(env: &Env<S>) -> Self

Convenience initializer

This function returns Self::default() or Self::with_extensions() depending on env.options.get(PosixlyCorrect).

pub const fn accepts_long_options(&self) -> bool

Whether the parser accepts long options or not

pub fn accept_long_options(&mut self, accept: bool) -> &mut Self

Sets whether the parser accepts long options or not.

Trait Implementations

impl Clone for Mode

fn clone(&self) -> Mode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Mode

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

Formats the value using the given formatter.

impl Default for Mode

fn default() -> Mode

Returns the “default value” for a type.

impl PartialEq for Mode

fn eq(&self, other: &Mode) -> 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 Copy for Mode

impl Eq for Mode

impl StructuralPartialEq for Mode