Struct app::Opt

pub struct Opt<'app> { /* fields omitted */ }

Option

Methods

impl<'app> Opt<'app>

fn new<'s: 'app, V>(name: &'app str, value: V) -> Self where
    V: OptValueParse<'app>, 

name and value, App will maintain the value(&mut T).

for example,

• follows's charset is Opt's Name

• h, v and cs is Opt's short

• help, version and charset is Opt's long

• help is Opt's help message

--charset charset,-cs charset         sets the charset Zipcs using
--help,-h                             show the help message
--version,-v                          show the version message

fn optional(self) -> Self

set Opts optional as true(default is false),

App will will not check it's value and create help message without default's value if it is true.

fn short(self, short: &'app str) -> Self

short

fn long(self, long: &'app str) -> Self

long

fn help(self, help: &'app str) -> Self

help message

impl<'app> Opt<'app>

fn value(&self) -> &'app OptValue

fn value_mut(&mut self) -> &'app mut OptValue

fn is_optional(&self) -> bool

fn is_bool(&self) -> bool

fn name_get(&self) -> &'app str

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

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

fn help_get(&self) -> &str

Trait Implementations

impl<'app> Debug for Opt<'app>

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.