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Reorder methods of Cell

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To make `new` method appear first in documentation.
This commit is contained in:
Shotaro Yamada 2019-10-03 15:24:00 +09:00
parent c6293e3598
commit 375469149c
1 changed files with 46 additions and 46 deletions
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92
src/libcore/cell.rs
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@ -229,52 +229,6 @@ pub struct Cell<T: ?Sized> {
value: UnsafeCell<T>,
}
impl<T:Copy> Cell<T> {
/// Returns a copy of the contained value.
///
/// # Examples
///
/// ```
/// use std::cell::Cell;
///
/// let c = Cell::new(5);
///
/// let five = c.get();
/// ```
#[inline]
#[stable(feature = "rust1", since = "1.0.0")]
pub fn get(&self) -> T {
unsafe{ *self.value.get() }
}
/// Updates the contained value using a function and returns the new value.
///
/// # Examples
///
/// ```
/// #![feature(cell_update)]
///
/// use std::cell::Cell;
///
/// let c = Cell::new(5);
/// let new = c.update(|x| x + 1);
///
/// assert_eq!(new, 6);
/// assert_eq!(c.get(), 6);
/// ```
#[inline]
#[unstable(feature = "cell_update", issue = "50186")]
pub fn update<F>(&self, f: F) -> T
where
F: FnOnce(T) -> T,
{
let old = self.get();
let new = f(old);
self.set(new);
new
}
}
#[stable(feature = "rust1", since = "1.0.0")]
unsafe impl<T: ?Sized> Send for Cell<T> where T: Send {}
@ -448,6 +402,52 @@ impl<T> Cell<T> {
}
}
impl<T:Copy> Cell<T> {
/// Returns a copy of the contained value.
///
/// # Examples
///
/// ```
/// use std::cell::Cell;
///
/// let c = Cell::new(5);
///
/// let five = c.get();
/// ```
#[inline]
#[stable(feature = "rust1", since = "1.0.0")]
pub fn get(&self) -> T {
unsafe{ *self.value.get() }
}
/// Updates the contained value using a function and returns the new value.
///
/// # Examples
///
/// ```
/// #![feature(cell_update)]
///
/// use std::cell::Cell;
///
/// let c = Cell::new(5);
/// let new = c.update(|x| x + 1);
///
/// assert_eq!(new, 6);
/// assert_eq!(c.get(), 6);
/// ```
#[inline]
#[unstable(feature = "cell_update", issue = "50186")]
pub fn update<F>(&self, f: F) -> T
where
F: FnOnce(T) -> T,
{
let old = self.get();
let new = f(old);
self.set(new);
new
}
}
impl<T: ?Sized> Cell<T> {
/// Returns a raw pointer to the underlying data in this cell.
///