Whitch can replace std::bind/boost::bind ?

[Dsby via Digitalmars-d-learn]

On Friday, 18 March 2016 at 17:24:27 UTC, Ali Çehreli wrote:
> On 03/18/2016 03:50 AM, Dsby wrote:
>>
>> foreach (i ; 0..4) {
>>      auto th = new Thread(delegate(){listRun(i);});//this is 
>> erro
>>      _thread[i]= th;
>>      th.start();
>> }
>>
>> void listRun(int i)
>> {
>>       writeln("i = ", i); // the value is not(0,1,2,3), it all 
>> is 2.
>> }
>>
>>
>> I want to know how to use it like std::bind.
>>
>>
>
> A workaround is an intermediate function that returns the 
> delegate:
>
> import std.stdio;
> import core.thread;
>
> void listRun(int i)
> {
>      writeln("i = ", i); // the value is not(0,1,2,3), it all 
> is 2.
> }
>
> auto makeClosure(int i) {
>     return delegate(){listRun(i);};
> }
>
> void main() {
>     Thread[4] _thread;
>
>     foreach (i ; 0..4) {
>         auto th = new Thread(makeClosure(i));
>         _thread[i]= th;
>         th.start();
>     }
> }
>
> Prints different values:
>
> i = 1
> i = 0
> i = 2
> i = 3
>
> Ali

Thanks for your mind.
i write the bind function:

import std.stdio;
import core.thread;
import std.functional;

class AA
{
     void show(int i)
     {
         writeln("i = ", i); // the value is not(0,1,2,3), it all 
is 2.
     }

}


void listRun(int i)
{
      writeln("i = ", i);
}


void main() {
     Thread[4] _thread;
     Thread[4] _thread2;
      AA a = new AA();
     foreach (i ; 0..4) {
         auto th = new Thread(bindDg(&a.show,i));
         _thread[i]= th;
         auto th2 = new Thread(bindFun!listRun(i + 10));
         _thread2[i]= th2;
     }

     foreach(i;0..4)
     {
         _thread[i].start();
     }

     foreach(i;0..4)
     {
         _thread2[i].start();
     }

}


auto bindDg(T, Args...)(T fun,Args args) if (is(T == delegate) || 
is(T == function))
{
	return delegate(){return fun(forward!args);};
}

auto bindFun(alias Fun,Args...)(Args args) {
	return delegate(){return Fun(forward!args);};
}


my value  is :
i = 2
i = 0
i = 3
i = 11
i = 13
i = 10
i = 12
i = 1