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builtin: improve docs for make slice

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Fixes #22764

Change-Id: I339d3bbb08983e0d69d69a1d00c4d15d0661762a
Reviewed-on: https://go-review.googlesource.com/78335
Reviewed-by: Rob Pike <r@golang.org>
This commit is contained in:
Ian Lance Taylor 2017-11-16 09:35:31 -08:00
parent d48336b798
commit ce68e1b81c
1 changed files with 3 additions and 2 deletions
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5
src/builtin/builtin.go
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@ -171,8 +171,9 @@ func cap(v Type) int
// Slice: The size specifies the length. The capacity of the slice is
// equal to its length. A second integer argument may be provided to
// specify a different capacity; it must be no smaller than the
// length, so make([]int, 0, 10) allocates a slice of length 0 and
// capacity 10.
// length. For example, make([]int, 0, 10) allocates an underlying array
// of size 10 and returns a slice of length 0 and capacity 10 that is
// backed by this underlying array.
// Map: An empty map is allocated with enough space to hold the
// specified number of elements. The size may be omitted, in which case
// a small starting size is allocated.