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Rollup merge of #48151 - echochamber:update_range_example, r=estebank 

Update ops range example to avoid confusion between indexes and values.

Makes clearer the numbers in the range refer to indexes, not the values at those indexes.
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kennytm 2018-02-14 16:14:40 +08:00
parent 5a193668db bd426f1d69
commit c4b211bdba
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1 changed files with 5 additions and 5 deletions
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10
src/libcore/ops/range.rs
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@ -68,11 +68,11 @@ impl fmt::Debug for RangeFull {
/// assert_eq!((3..5), std::ops::Range { start: 3, end: 5 });
/// assert_eq!(3 + 4 + 5, (3..6).sum());
///
/// let arr = [0, 1, 2, 3];
/// assert_eq!(arr[ .. ], [0,1,2,3]);
/// assert_eq!(arr[ ..3], [0,1,2 ]);
/// assert_eq!(arr[1.. ], [ 1,2,3]);
/// assert_eq!(arr[1..3], [ 1,2 ]); // Range
/// let arr = ['a', 'b', 'c', 'd'];
/// assert_eq!(arr[ .. ], ['a', 'b', 'c', 'd']);
/// assert_eq!(arr[ ..3], ['a', 'b', 'c', ]);
/// assert_eq!(arr[1.. ], [ 'b', 'c', 'd']);
/// assert_eq!(arr[1..3], [ 'b', 'c' ]); // Range
/// ```
#[derive(Clone, PartialEq, Eq, Hash)] // not Copy -- see #27186
#[stable(feature = "rust1", since = "1.0.0")]