Struct clap::builder::NonEmptyStringValueParser
source · [−]#[non_exhaustive]pub struct NonEmptyStringValueParser {}
Expand description
Parse non-empty string values
See also:
Example
Usage:
let mut cmd = clap::Command::new("raw")
.arg(
clap::Arg::new("append")
.value_parser(clap::builder::NonEmptyStringValueParser::new())
.required(true)
);
let m = cmd.try_get_matches_from_mut(["cmd", "true"]).unwrap();
let port: &String = m.get_one("append")
.expect("required");
assert_eq!(port, "true");
Semantics:
let value_parser = clap::builder::NonEmptyStringValueParser::new();
assert_eq!(value_parser.parse_ref(&cmd, arg, OsStr::new("random")).unwrap(), "random");
assert!(value_parser.parse_ref(&cmd, arg, OsStr::new("")).is_err());
Implementations
Trait Implementations
sourceimpl Clone for NonEmptyStringValueParser
impl Clone for NonEmptyStringValueParser
sourcefn clone(&self) -> NonEmptyStringValueParser
fn clone(&self) -> NonEmptyStringValueParser
Returns a copy of the value. Read more
1.0.0 · sourcefn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
sourceimpl Debug for NonEmptyStringValueParser
impl Debug for NonEmptyStringValueParser
sourceimpl Default for NonEmptyStringValueParser
impl Default for NonEmptyStringValueParser
sourceimpl TypedValueParser for NonEmptyStringValueParser
impl TypedValueParser for NonEmptyStringValueParser
sourcefn parse_ref(
&self,
cmd: &Command<'_>,
arg: Option<&Arg<'_>>,
value: &OsStr
) -> Result<Self::Value, Error>
fn parse_ref(
&self,
cmd: &Command<'_>,
arg: Option<&Arg<'_>>,
value: &OsStr
) -> Result<Self::Value, Error>
Parse the argument value Read more
sourcefn parse(
&self,
cmd: &Command<'_>,
arg: Option<&Arg<'_>>,
value: OsString
) -> Result<Self::Value, Error>
fn parse(
&self,
cmd: &Command<'_>,
arg: Option<&Arg<'_>>,
value: OsString
) -> Result<Self::Value, Error>
Parse the argument value Read more
sourcefn possible_values(
&self
) -> Option<Box<dyn Iterator<Item = PossibleValue<'static>>>>
fn possible_values(
&self
) -> Option<Box<dyn Iterator<Item = PossibleValue<'static>>>>
Reflect on enumerated value properties Read more
impl Copy for NonEmptyStringValueParser
Auto Trait Implementations
impl RefUnwindSafe for NonEmptyStringValueParser
impl Send for NonEmptyStringValueParser
impl Sync for NonEmptyStringValueParser
impl Unpin for NonEmptyStringValueParser
impl UnwindSafe for NonEmptyStringValueParser
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
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
sourceimpl<T> ToOwned for T where
T: Clone,
impl<T> ToOwned for T where
T: Clone,
type Owned = T
type Owned = T
The resulting type after obtaining ownership.
sourcefn clone_into(&self, target: &mut T)
fn clone_into(&self, target: &mut T)
🔬 This is a nightly-only experimental API. (
toowned_clone_into
)Uses borrowed data to replace owned data, usually by cloning. Read more