On Sunday, 1 July 2018 at 11:19:50 UTC, vino.B wrote:
Hi Timoses,
Thank you very much, can you help me on how to rewrite the
below using Variadic template
Passing function as a parameter to another function:
void ptFun(T)(T function(string, string, int) coRoutine,
Array!string Dirlst, ) {
alias scRType = typeof(coRoutine(string.init, string.init,
int.init));
where the "function(string, string, int) coRoutine" should be a
variadic function
From,
Vino.B
I'm not sure, if get your question right, is this what you are
looking for?
´´´
import std.stdio;
import std.traits;
void main()
{
alias instantiation = ptFun!(size_t, fun!string);
instantiation(4);
alias instantiation2 = ptFun2!(fun!string);
instantiation2(4);
}
auto fun(T...)(T input)
{
return size_t(42);
}
void ptFun(T, alias funToCall)(size_t definedParam)
if(is(T == ReturnType!(funToCall)))
{
"ptFun called".writeln;
assert(42 == funToCall("some string"));
}
void ptFun2(alias funToCall)(size_t definedParam)
if(__traits(isSame, TemplateOf!(funToCall), fun))
{
"ptFun2 called".writeln;
assert(42 == funToCall("some string"));
}
´´´
