Question of delegate literals and return from function(GDC, DMD, LDC)

[Daniel Keep]

downs wrote:
> amaury pouly wrote:
>> Hello,
>> I have a little question about D: I want to have a function returning a delegate and more precisely a delegate literal that uses one of the arguments of the function. Here is an example:
>>
>> int delegate(int) test(int[] tab)
>> {
>>     return (int d)
>>     {
>>         int sum;
>>         foreach(i;tab)
>>             sum+=i*d;// stupid computation
>>         return sum;
>>     };
>> }
>>
>> int main()
>> {
>>     auto res=test([1,2,3,4,5,6])(4);
>>     return res;
>> }
> 
> tools version:
> 
> import tools.base, std.stdio;
> 
> int delegate(int) test(int[] tab) {
> 	return tab /apply/ (int[] tab, int d) {
> 		int sum;
> 		foreach (i; tab) sum += i*d;
> 		return sum;
> 	};
> }
> 
> void main() {
> 	auto res = test([1,2,3,4,5,6])(4);
> 	writefln(res);
> }

I was tempted to post mine out of sheer bloody-mindedness, except that
it apparently doesn't work any more.

Oh well, yours was about a million times safer, anyway.  :P

  -- Daniel