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Rollup merge of #40646 - russmack:issue-40435-mention-none, r=frewsxcv 

Add mention of None as possible return. Closes #40435.

This commit adds a small mention to some methods that None is returned when the slice is empty.
This commit is contained in:
Corey Farwell 2017-03-19 10:18:23 -04:00 committed by GitHub
parent 9e11ecb750 b77d31ac61
commit 35cf2f96ce
1 changed files with 4 additions and 4 deletions
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8
src/libcollections/slice.rs
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@ -230,7 +230,7 @@ impl<T> [T] {
core_slice::SliceExt::first_mut(self)
}
/// Returns the first and all the rest of the elements of a slice.
/// Returns the first and all the rest of the elements of a slice, or `None` if it is empty.
///
/// # Examples
///
@ -248,7 +248,7 @@ impl<T> [T] {
core_slice::SliceExt::split_first(self)
}
/// Returns the first and all the rest of the elements of a slice.
/// Returns the first and all the rest of the elements of a slice, or `None` if it is empty.
///
/// # Examples
///
@ -268,7 +268,7 @@ impl<T> [T] {
core_slice::SliceExt::split_first_mut(self)
}
/// Returns the last and all the rest of the elements of a slice.
/// Returns the last and all the rest of the elements of a slice, or `None` if it is empty.
///
/// # Examples
///
@ -287,7 +287,7 @@ impl<T> [T] {
}
/// Returns the last and all the rest of the elements of a slice.
/// Returns the last and all the rest of the elements of a slice, or `None` if it is empty.
///
/// # Examples
///