I don't like slices in D

[Vitali]

On Thursday, 17 October 2013 at 18:21:30 UTC, David Eagen wrote:
> On Thursday, 17 October 2013 at 18:00:20 UTC, Vitali wrote:
>> I expected slices to be in D (http://dlang.org/arrays.html) 
>> like they are in Go 
>> (http://blog.golang.org/go-slices-usage-and-internals). But 
>> they are not.
>>
>> Why the array have to be reallocated after the length of a 
>> slice is changed? It makes slices useless.
>>
>> Here a little example (it fails):
>>
>>  void testSlices() {
>>    int[] dArr = [10, 11, 12];
>>    int[] dSlice = dArr[0..2];
>>    dSlice.length++;
>>    assert(dArr[2]==dSlice[2]); // failure
>>  }
>
>
> Change your slice to
> int[] dSlice = dArr[0..$] or [0..3];
>
> The way you are doing it only takes the first 2 elements.
>
> Modified code:
>
> import std.stdio : writeln;
>
> void main()
> {
>   int[] dArr = [10, 11, 12];
>   int[] dSlice = dArr[0..$];
>   assert(dArr[2] is dSlice[2]); // passes
>   dSlice.length++;
>   assert(dArr[2] == dSlice[2]); // passes
> }

This doesn't answer my question.

I repeat my question: "Why does a reallocation accure AFTER a 
resize of the length of a slice, although there is still 
capacity?"