Function overloading

[Frits van Bommel]

Regan Heath wrote:
> import std.stdio;
> 
> void test(T)(T p)
> {
>     writefln("misc called");
> }
> 
> void test(T : int)(T p)
> {
>     writefln("int called");
> }
> 
> void main()
> {
>     int i;
>     long l;
>     float f;
>     test!(int)(i);
>     test!(long)(l);
>     test!(float)(f);
> }
> 
> Output:
> int called
> misc called
> misc called
> 
> 
> However, without the !(int) etc it fails to compile with: "template 
> tplspec.test(T : int) specialization not allowed for deduced parameter T"

Workaround:
---
import std.stdio;

void testImpl(T)(T p)
{
     writefln("misc called");
}

void testImpl(T : int)(T p)
{
     writefln("int called");
}

void test(T)(T p) { return testImpl!(T)(p); }

void main()
{
     int i;
     long l;
     float f;
     test(i);
     test(l);
     test(f);
}
---
(test uses the deduced parameter to explicitly instantiate testImpl)