Re: Question about Mixin.

[Ali Çehreli]

On 06/19/2013 04:29 PM, Agustin wrote:

Hello guys, my question is, its possible to write a mixin in a class,
then if that class is inherited, the mixin will be written again instead
of written the mixin again in the class child, for example:

Class A(T)
{
  mixin(WriteFunctionFor!(A));
}

Class B : A(B)
{
   ... -> mixin is written for B without need to write ("mixin(Write...))")
}

Class C : A(C)
{
   ... -> mixin is written for C without need to write ("mixin(Write...))")
}

Yes:

import std.stdio;

template WriteFunctionFor(T)
{
    T data;

    void foo()
    {
        writefln("I am working with a %s.", T.stringof);
    }
}

class A(T)
{
    mixin WriteFunctionFor!T;
}

class B : A!B
{}

class C : A!C
{}

void main()
{
    auto b = new B();
    b.foo();

    auto c = new C();
    c.foo();
}

The output:

I am working with a B.
I am working with a C.

Ali