avoid extra variable during void pointer cast

[Bauss via Digitalmars-d-learn]

On Sunday, 14 May 2017 at 21:07:36 UTC, Marco Leise wrote:
> Am Sun, 14 May 2017 20:18:24 +0000
> schrieb Kevin Brogan <kevin at brogan.ca>:
>
>> [...]
>
> No, that is not possible. An alias can only be assigned a 
> symbol.
>
>> [...]
>
> Let the compiler optimize the assignment away and don't worry 
> much about it. Inlining also works well within the same module. 
> In this case here I would probably use "consume" functions as I 
> dub them:
>
> 	import std.traits;
> 	pragma(inline, true) /* Not really needed I hope ;) */
> 	ref T consume(T)(ref void* data) if (!hasIndirections!T)
> 	{
> 		T* ptr = cast(T*)data;
> 		data += T.sizeof;
> 		return *ptr;
> 	}
>
> You can then rewrite your addInt function like this:
>
> 	void add(T)(void* state, void* data) if (isNumeric!T)
> 	{
> 		state.consume!T += data.consume!T;
> 	}

pragma(inline, true); doesn't actually do what you think it does. 
In lining is always done whenever possible and that only tells 
the compiler to spit out an error if it can't inline it.