Struct getopt::Opt

pub struct Opt(pub char, pub Option<String>);

A single option.

For Opt(x, y):

• x is the character representing the option.
• y is Some string, or None if no argument was expected.

Example

use getopt::prelude::*;

// args = ["program", "-abc", "foo"];
let optstring = "ab:c";
let mut opts = Parser::new(&args, optstring);

assert_eq!(Opt('a', None), opts.next().transpose()?.unwrap());
assert_eq!(Opt('b', Some("c".to_string())), opts.next().transpose()?.unwrap());
assert_eq!(None, opts.next().transpose()?);

Trait Implementations

impl Eq for Opt

impl PartialOrd<Opt> for Opt

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

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

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

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

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

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

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

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

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

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

impl PartialEq<Opt> for Opt

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

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

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

This method tests for !=.

impl Ord for Opt

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

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

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

🔬 This is a nightly-only experimental API. (clamp)

Restrict a value to a certain interval.

impl Debug for Opt

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

Formats the value using the given formatter.

impl Display for Opt

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

Formats the value using the given formatter.