Re: Disappointing inflexibility of argument passing in D

[Andrea Fontana]

On Tuesday, 11 February 2014 at 15:10:57 UTC, Carl Sturtivant 
wrote:

D has opAssign, making defining implicit conversions from any 
type to a new type possible on assignment, so where is the 
analogue (say opPass) for passing an argument to a function?

void f( Data d, Data2 d2) { ..... }

void main() {
       //conversions from string part of the definitions of 
Data, Data2
    f( "hello", "bonjour"); //no way to do this --- 
disappointing
}

See
http://forum.dlang.org/thread/agstjpezerwlgdhph...@forum.dlang.org

In the meanwhile maybe you can try a workaround with templates? 
Something like:

void f(D1, D2)(D1 d, D2 d2) if (is(D1:Data) && is(D2 : Data2))
{
   // Temp vars and assignment
   ...
   ...
   f(tmpD1, tmpD2);
}