[go-nuts] slice capacity question

Em qua, 1 de abr de 2015 às 14:49, <vlyamtsev@gmail.com> escreveu:

From golang book (http://www.golang-book.com/6/index.htm):
"A slice cannot be grown beyond its capacity. Attempting to do so will
cause a runtime panic, just as when indexing outside the bounds of a slice
or array. Similarly, slices cannot be re-sliced below zero to access
earlier elements in the array"
Than, can someone explain how's the following work?
//make array af len=0, capacity=0
slice := make([]string, 0)
....
slice = append(slice, "one")

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Append creates a new slice when it needs to grown it being capacity and
copies the elements of the original slice to the new one.

On Wed, Apr 1, 2015 at 10:49 AM, wrote:

From golang book (http://www.golang-book.com/6/index.htm):
"A slice cannot be grown beyond its capacity. Attempting to do so will
cause a runtime panic, just as when indexing outside the bounds of a slice
or array. Similarly, slices cannot be re-sliced below zero to access
earlier elements in the array"
Than, can someone explain how's the following work?
//make array af len=0, capacity=0
slice := make([]string, 0)
....
slice = append(slice, "one")

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"golang-nuts" group.
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