matches!(*self, Some(_))
}
- /// Returns `true` if the option is a [`Some`] wrapping a value matching the predicate.
+ /// Returns `true` if the option is a [`Some`] and the value inside of it matches a predicate.
///
/// # Examples
///
/// #![feature(is_some_with)]
///
/// let x: Option<u32> = Some(2);
- /// assert_eq!(x.is_some_with(|&x| x > 1), true);
+ /// assert_eq!(x.is_some_and(|&x| x > 1), true);
///
/// let x: Option<u32> = Some(0);
- /// assert_eq!(x.is_some_with(|&x| x > 1), false);
+ /// assert_eq!(x.is_some_and(|&x| x > 1), false);
///
/// let x: Option<u32> = None;
- /// assert_eq!(x.is_some_with(|&x| x > 1), false);
+ /// assert_eq!(x.is_some_and(|&x| x > 1), false);
/// ```
#[must_use]
#[inline]
#[unstable(feature = "is_some_with", issue = "93050")]
- pub fn is_some_with(&self, f: impl FnOnce(&T) -> bool) -> bool {
+ pub fn is_some_and(&self, f: impl FnOnce(&T) -> bool) -> bool {
matches!(self, Some(x) if f(x))
}
matches!(*self, Ok(_))
}
- /// Returns `true` if the result is [`Ok`] wrapping a value matching the predicate.
+ /// Returns `true` if the result is [`Ok`] and the value inside of it matches a predicate.
///
/// # Examples
///
/// #![feature(is_some_with)]
///
/// let x: Result<u32, &str> = Ok(2);
- /// assert_eq!(x.is_ok_with(|&x| x > 1), true);
+ /// assert_eq!(x.is_ok_and(|&x| x > 1), true);
///
/// let x: Result<u32, &str> = Ok(0);
- /// assert_eq!(x.is_ok_with(|&x| x > 1), false);
+ /// assert_eq!(x.is_ok_and(|&x| x > 1), false);
///
/// let x: Result<u32, &str> = Err("hey");
- /// assert_eq!(x.is_ok_with(|&x| x > 1), false);
+ /// assert_eq!(x.is_ok_and(|&x| x > 1), false);
/// ```
#[must_use]
#[inline]
#[unstable(feature = "is_some_with", issue = "93050")]
- pub fn is_ok_with(&self, f: impl FnOnce(&T) -> bool) -> bool {
+ pub fn is_ok_and(&self, f: impl FnOnce(&T) -> bool) -> bool {
matches!(self, Ok(x) if f(x))
}
!self.is_ok()
}
- /// Returns `true` if the result is [`Err`] wrapping a value matching the predicate.
+ /// Returns `true` if the result is [`Err`] and the value inside of it matches a predicate.
///
/// # Examples
///
/// use std::io::{Error, ErrorKind};
///
/// let x: Result<u32, Error> = Err(Error::new(ErrorKind::NotFound, "!"));
- /// assert_eq!(x.is_err_with(|x| x.kind() == ErrorKind::NotFound), true);
+ /// assert_eq!(x.is_err_and(|x| x.kind() == ErrorKind::NotFound), true);
///
/// let x: Result<u32, Error> = Err(Error::new(ErrorKind::PermissionDenied, "!"));
- /// assert_eq!(x.is_err_with(|x| x.kind() == ErrorKind::NotFound), false);
+ /// assert_eq!(x.is_err_and(|x| x.kind() == ErrorKind::NotFound), false);
///
/// let x: Result<u32, Error> = Ok(123);
- /// assert_eq!(x.is_err_with(|x| x.kind() == ErrorKind::NotFound), false);
+ /// assert_eq!(x.is_err_and(|x| x.kind() == ErrorKind::NotFound), false);
/// ```
#[must_use]
#[inline]
#[unstable(feature = "is_some_with", issue = "93050")]
- pub fn is_err_with(&self, f: impl FnOnce(&E) -> bool) -> bool {
+ pub fn is_err_and(&self, f: impl FnOnce(&E) -> bool) -> bool {
matches!(self, Err(x) if f(x))
}