Enum ap::Need

pub enum Need {
    Nothing,
    Argument,
}

Used to specify whether an option is a “stand-alone” flag option (needs no value), or whether it requires an option argument.

Variants

Nothing

Option is stand-alone (no argument required).

Argument

Option needs an argument.

Implementations

impl Need

pub fn new() -> Self

Create a new default requirement for an Arg.

Trait Implementations

impl Clone for Need

fn clone(&self) -> Need

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for Need

impl Debug for Need

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

Formats the value using the given formatter.

impl Default for Need

fn default() -> Self

Returns the “default value” for a type.

impl Eq for Need

impl Ord for Need

fn cmp(&self, other: &Need) -> Ordering

This method returns an Ordering between self and other.

#[must_use]

pub fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

#[must_use]

pub fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

#[must_use]

pub fn clamp(self, min: Self, max: Self) -> Self

Restrict a value to a certain interval.

impl PartialEq<Need> for Need

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

This method tests for self and other values to be equal, and is used by ==.

#[must_use]

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

This method tests for !=.

impl PartialOrd<Need> for Need

fn partial_cmp(&self, other: &Need) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

#[must_use]

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

This method tests less than (for self and other) and is used by the < operator.

#[must_use]

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

This method tests less than or equal to (for self and other) and is used by the <= operator.

#[must_use]

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

This method tests greater than (for self and other) and is used by the > operator.

#[must_use]

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

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralEq for Need

impl StructuralPartialEq for Need