Implicit Constructors

[Jacob Carlborg]

On 2017-10-13 01:57, Q. Schroll wrote:
> We have some sort of implicit construction already. Weirdly, it's 
> reserved for classes. Just look at this:
> 
>      class C { this(int x) { } }
>      void foo(C c ...) { }
>      void main() { foo(0); }

Hmm, I didn't know that syntax was legal. But apparently it's some form 
of typesafe variadic function [1]. It also work for built-in types:

void foo(int i ...){}

void main()
{
     foo(3);
     foo(3, 4); // error, too many arguments
}

Not sure what the purpose of the latter is.

[1] https://dlang.org/spec/function.html#typesafe_variadic_functions

-- 
/Jacob Carlborg