Re: Add support implicit conversion between types

[Benjamin Thaut]

Am 06.09.2013 12:33, schrieb ilya-stromberg:
Do you have any plans to support implicit conversion between types?
I have some code like this:

struct Foo
{
     this(int i)
     {
         //do something useful
     }
}

void bar(Foo f)
{
     //do something else
}

void main()
{
     Foo f = 5;//works

     bar(f);//works

     bar(Foo(5));//works

     bar(5);//Error: function app.bar (Foo f) is not callable using
argument types (int)
}

So, D can't use constructor to convert "int" to "Foo" implicitly.
Can we add "implicit" keyword to allow do this:

struct Foo
{
     implicit this(int i)
     {
         //do something useful
     }
}

C++ allows this, but have "explicit" keyword.
C# doesn't allow this, but have operator overloading for both implicit
and explicit cases.

I also made almost the same suggestion some time ago. I would support a 
feature like this.

--
Kind Regards
Benjamin Thaut