I use wrapper functions taking void[] arrays to forward them comfortably to mentioned OpenGL functions. This works with static and dynamic build in arrays, but I don't see a way how I could access (cast) the raw data of a std.container.array to forward it to these wrapper functions. std.array(Range)(Range r) does a copy which I would like to avoid. Any advice ?

On Wednesday, 17 June 2015 at 13:04:28 UTC, ParticlePeter wrote:
> I use wrapper functions taking void[] arrays to forward them comfortably to mentioned OpenGL functions. This works with static and dynamic build in arrays, but I don't see a way how I could access (cast) the raw data of a std.container.array to forward it to these wrapper functions. std.array(Range)(Range r) does a copy which I would like to avoid. Any advice ?

Try slicing it: `array[]`

On Wednesday, 17 June 2015 at 13:07:11 UTC, Alex Parrill wrote:
> On Wednesday, 17 June 2015 at 13:04:28 UTC, ParticlePeter wrote:
>> I use wrapper functions taking void[] arrays to forward them comfortably to mentioned OpenGL functions. This works with static and dynamic build in arrays, but I don't see a way how I could access (cast) the raw data of a std.container.array to forward it to these wrapper functions. std.array(Range)(Range r) does a copy which I would like to avoid. Any advice ?
>
> Try slicing it: `array[]`

That gives me a range, which I could convert to an array with std.array(Range)(Range
r) which I want to avoid.

On Wednesday, 17 June 2015 at 13:04:28 UTC, ParticlePeter wrote:
> I use wrapper functions taking void[] arrays to forward them comfortably to mentioned OpenGL functions. This works with static and dynamic build in arrays, but I don't see a way how I could access (cast) the raw data of a std.container.array to forward it to these wrapper functions. std.array(Range)(Range r) does a copy which I would like to avoid. Any advice ?

Would this work?

(&arr.front)[0 .. arr.length]

On Wednesday, 17 June 2015 at 13:31:21 UTC, Marc Schütz wrote:
> On Wednesday, 17 June 2015 at 13:04:28 UTC, ParticlePeter wrote:
>> I use wrapper functions taking void[] arrays to forward them comfortably to mentioned OpenGL functions. This works with static and dynamic build in arrays, but I don't see a way how I could access (cast) the raw data of a std.container.array to forward it to these wrapper functions. std.array(Range)(Range r) does a copy which I would like to avoid. Any advice ?
>
> Would this work?
>
> (&arr.front)[0 .. arr.length]

Unfortunately not:
Error: Vector!(float, 3) delegate() pure nothrow @property ref @safe cannot be sliced with []

Fyi, its an std.container.array!( gl3n.Vector!(float, 3) ) array.

(&arr.front())[0 .. arr.length] ?

On Wednesday, 17 June 2015 at 13:58:09 UTC, Kagamin wrote:
> (&arr.front())[0 .. arr.length] ?

Yes, this works, nice, thanks :-)