detecting classes, structs, arrays in templates

[Luke J. West]

Hi,

I want to specialize a template function - call it print() - for three
cases: classes, structs and arrays. Ideally I'd like something that
looks 'functional' like a proper specialization, but perhaps I need to
use "static if". I'm still at the beginning of my journey with D so I'd
be grateful for any pointers (sorry - that's a terrible pun). Perhaps
there's a corner of the D2 docs I've glossed over.

Thanks,

Luke


// in words you can understand...

void print(T)() {writefln("general");}

// But what does my specialization look like for all (or any)
// of the implementations of print() for the calls below.

int main() {
 C   c;    // some class
 S   s;    // some struct
 int a[4]; // an array
 int p;    // a primitive type
 
 print(c); // writefln("class");
 print(s); // writefln("struct");
 print(a); // writefln("array");
 print(p); // writefln("primitive");

 return 0;
}