How auto convert Variant to required function arguments?

[Ferhat Kurtulmuş]

On Friday, 9 October 2020 at 00:19:20 UTC, Marcone wrote:
> How auto convert Variant to required function arguments?


import std.variant;
import std.stdio;

Variant a;

int mul2(Variant b){
     int c = *b.peek!(int);
     return 2*c;
}

int mul3(int b){
     return 3*b;
}

void main()
{
     a = 5;
     writeln(mul2(a));

     Variant b = 3;
     writeln(mul3(*b.peek!int));
}