On Friday, 15 July 2016 at 15:04:22 UTC, Devin Hill wrote:
to the condition. It works pretty well! Granted, it doesn't
allow for calling it in two ways like a variadic version would
have:
foo(1, 2, 3) // works with this setup
foo([1, 2, 3]) // doesn't, but would only be occasionally
useful anyway
but all in all it's a decent workaround for the problem.
It isn't too much effort to add support for both:
```
import std.traits : isArray, ForeachType;
import std.stdio : writeln;
void func(Args...)(Args args)
if(is(Args[0] : long) || (isArray!(Args[0]) &&
is(ForeachType!(Args[0]) : long)))
{
static if(isArray!(Args[0])) {
foreach(i; args[0])
writeln(i);
}
else {
foreach(arg; args)
writeln(arg);
}
}
void main()
{
func(10, 20, 30, 40);
func([1, 2, 3, 4, 5]);
}
```
Or, alternatively, to support multiple arrays:
```
void func(Args...)(Args args)
if(is(Args[0] : long) || (isArray!(Args[0]) &&
is(ForeachType!(Args[0]) : long)))
{
foreach(arg; args) {
static if(isArray!(Args[0])) {
foreach(i; arg) writeln(i);
}
else writeln(arg);
}
}
void main()
{
func(10, 20, 30, 40);
func([1, 2, 3, 4, 5], [100, 200, 300, 400]);
}
```
