Trait Input 

pub trait Input {
    // Required methods
    fn parsed(&self) -> bool;
    fn has_default(&self) -> bool;
    fn parse(&mut self, token: &str) -> CliResult<bool>;
    fn display_name(&self) -> String;
    fn description(&self) -> Option<String>;
    fn type_name(&self) -> InputType;
    fn is_bool_flag(&self) -> bool;
    fn complete(&mut self, value: &str) -> CliResult<Vec<String>>;
}

parser complexities:

compound flags (-am)

optional flags

out of order flags

Required Methods

fn parsed(&self) -> bool

fn has_default(&self) -> bool

fn parse(&mut self, token: &str) -> CliResult<bool>

fn display_name(&self) -> String

fn description(&self) -> Option<String>

fn type_name(&self) -> InputType

fn is_bool_flag(&self) -> bool

fn complete(&mut self, value: &str) -> CliResult<Vec<String>>

must not return completions that don’t start with value, otherwise bash breaks

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl<'a, T: FromStr + Clone> Input for Arg<'a, T>

impl<'a, T: FromStr + Default + Clone> Input for Flag<'a, T>