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Rollup merge of #37343 - bluss:write-doc, r=GuillaumeGomez

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Add documentation for Read, Write impls for slices and Vec

The Write imps for &[u8] and Vec<u8> are quite different, and we need this to
be reflected in the docs.

These documentation comments will be visible on the respective type's
page in the trait impls section.
This commit is contained in:
Guillaume Gomez 2016-10-28 17:05:47 +02:00 committed by GitHub
commit 777502ef05
1 changed files with 11 additions and 0 deletions
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11
src/libstd/io/impls.rs
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@ -147,6 +147,10 @@ impl<B: BufRead + ?Sized> BufRead for Box<B> {
// =============================================================================
// In-memory buffer implementations
/// Read is implemented for `&[u8]` by copying from the slice.
///
/// Note that reading updates the slice to point to the yet unread part.
/// The slice will be empty when EOF is reached.
#[stable(feature = "rust1", since = "1.0.0")]
impl<'a> Read for &'a [u8] {
#[inline]
@ -180,6 +184,11 @@ impl<'a> BufRead for &'a [u8] {
fn consume(&mut self, amt: usize) { *self = &self[amt..]; }
}
/// Write is implemented for `&mut [u8]` by copying into the slice, overwriting
/// its data.
///
/// Note that writing updates the slice to point to the yet unwritten part.
/// The slice will be empty when it has been completely overwritten.
#[stable(feature = "rust1", since = "1.0.0")]
impl<'a> Write for &'a mut [u8] {
#[inline]
@ -204,6 +213,8 @@ impl<'a> Write for &'a mut [u8] {
fn flush(&mut self) -> io::Result<()> { Ok(()) }
}
/// Write is implemented for `Vec<u8>` by appending to the vector.
/// The vector will grow as needed.
#[stable(feature = "rust1", since = "1.0.0")]
impl Write for Vec<u8> {
#[inline]