pub struct Single<T>(pub T);Expand description
A single argument option.
Tuple Fields
0: TTrait Implementations
sourceimpl<'a, T> CommandLineArgument for Single<&'a mut T>where
T: FromStr + DefaultName + Display,
<T as FromStr>::Err: StdError + 'static,
impl<'a, T> CommandLineArgument for Single<&'a mut T>where
T: FromStr + DefaultName + Display,
<T as FromStr>::Err: StdError + 'static,
sourcefn parse_value(&mut self, arg: &str) -> Result<(), ArgError>
fn parse_value(&mut self, arg: &str) -> Result<(), ArgError>
Add the value from the command line string.
sourcefn default_value(&self) -> Option<String>
fn default_value(&self) -> Option<String>
Return the initial value as a string.
sourcefn write_name(&self, name: Option<&str>) -> Option<String>
fn write_name(&self, name: Option<&str>) -> Option<String>
Return a description of a argument of this type. Read more
sourcefn set_default(&mut self) -> Result<(), ArgError>
fn set_default(&mut self) -> Result<(), ArgError>
Called if the option has been specified without argument. Read more
sourcefn set_unseen(&mut self)
fn set_unseen(&mut self)
Called if the argument has never been seen. Read more
Auto Trait Implementations
impl<T> RefUnwindSafe for Single<T>where
T: RefUnwindSafe,
impl<T> Send for Single<T>where
T: Send,
impl<T> Sync for Single<T>where
T: Sync,
impl<T> Unpin for Single<T>where
T: Unpin,
impl<T> UnwindSafe for Single<T>where
T: UnwindSafe,
Blanket Implementations
sourceimpl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more