Question about anonymous delegates.

[Timon Gehr]

On 10/03/2012 03:53 PM, Sharp wrote:
> I found something what I don't understand.
>
> Here is a simplifed code with comments:
> http://dpaste.dzfl.pl/a914d11a
>
> I creating anonymous delegates, whose function is to modify their
> parameter. Their parameters are different class references.
> I pass these class references to anonymous delegates, but the delegates
> obtain only the last passed class reference.
>
> Thanks for your answers.

class Num {
     int a;
}

void main(){
     auto nums = new Num[10];
     alias void delegate() Func;
     auto funcs = new Func[10];
     // workaround for 
http://d.puremagic.com/issues/show_bug.cgi?id=2043 ahead:
     for(int i = 0; i < 10; ++i) (){
         Num num = nums[i] = new Num();
         int i=i; // fix for bug in your code
         funcs[i] = {num.a = i;};
     }();
     foreach(num; nums) {
         assert(num.a == 0);
     }
     foreach(func; funcs) {
         func();
     }
     foreach(i, num; nums) {
         assert(num.a == i);
     }
}