News/info on Go and Java

[Sergey Gromov]

Wed, 25 Nov 2009 12:27:59 +0300, Denis Koroskin wrote:

> On Wed, 25 Nov 2009 03:03:59 +0300, bearophile <bearophileHUGS at lycos.com>  
> wrote:
> 
>> This looks a lot like D:
>> http://research.swtch.com/2009/11/go-data-structures.html
> 
> Looks like go has arrays that support slices. Do they support appending?  
> If so, what's their behavior and how do they solve stomping issues?

Arrays are values and cannot be resized after creation.

    var array [10]int;

Arrays can be sliced like in D:

    var slice []int = array[5:7];

The length of this slice is len(slice) == 7 - 5 == 2.   The *capacity*
of this slice is cap(slice) == 10 - 5 == 5.

You can slice a slice beyond its length, up to capacity:

    var slice2 []int = slice[4:5];

Effectively slice is a tail of an array, with optional subdivision into
sub-head and sub-tail.

There is no array nor slice concatenation, nor any other way to change
slice length except slicing.