Is there a way to get the length of an array out of slice bracket in D?

Tks.

On Thursday, 22 May 2014 at 23:22:44 UTC, kaz wrote:
> Is there a way to get the length of an array out of slice bracket in D?
>
> Tks.

Just use .length:

void main()
{
	import std.stdio;
	auto a = new int[5];
	auto b = a[];
	writeln(a.length, " ", b.length);	
}

On 05/22/2014 04:22 PM, kaz wrote:
> Is there a way to get the length of an array out of slice bracket in D?
>
> Tks.

If you mean the length of the original array, no. Of course, the length of the slice is trivial: slice.length.

The following article explains how slices don't know about other slices (including the original array):

  http://dlang.org/d-array-article.html

Ali

On Thursday, 22 May 2014 at 23:24:30 UTC, Brad Anderson wrote:
> On Thursday, 22 May 2014 at 23:22:44 UTC, kaz wrote:
>> Is there a way to get the length of an array out of slice bracket in D?
>>
>> Tks.
>
> Just use .length:
>
> void main()
> {
> 	import std.stdio;
> 	auto a = new int[5];
> 	auto b = a[];
> 	writeln(a.length, " ", b.length);	
> }

Tks.

On Thursday, 22 May 2014 at 23:26:02 UTC, Ali Çehreli wrote:
> On 05/22/2014 04:22 PM, kaz wrote:
>> Is there a way to get the length of an array out of slice bracket in D?
>>
>> Tks.
>
> If you mean the length of the original array, no. Of course, the length of the slice is trivial: slice.length.
>
> The following article explains how slices don't know about other slices (including the original array):
>
>   http://dlang.org/d-array-article.html
>
> Ali

Tks.

On Sunday, 25 May 2014 at 06:50:14 UTC, kaz wrote:
> On Thursday, 22 May 2014 at 23:26:02 UTC, Ali Çehreli wrote:
>> On 05/22/2014 04:22 PM, kaz wrote:
>>> Is there a way to get the length of an array out of slice bracket in D?
>>>
>>> Tks.
>>
>> If you mean the length of the original array, no. Of course, the length of the slice is trivial: slice.length.
>>
>> The following article explains how slices don't know about other slices (including the original array):
>>
>>  http://dlang.org/d-array-article.html
>>
>> Ali
>
> Tks.

Also, when slicing, you can use the dollar operator to get the length of a slice:

auto arr = [1, 2, 3, 4];
auto slice = arr[$/2 .. $]; // the last half of the array, [3, 4]