On Monday, 6 August 2012 at 12:21:38 UTC, Minas Mina wrote:
I want to write a fibonacci(n) function that calculates the
result.
a) if n is known at compile time, use a template
b) if not, use a normal function
I know how to write a template version:
template fib(ulong n)
{
static if( n < 2 )
const fib = n;
else
const fib = fib!(n-1) + fib!(n-2);
}
But how can I 'know' if n is known at compile time to make it
use the other version? (which I won't post 'cause it is fairly
easy).
What exactly do you try to accomplish? Why can't you use CTFE
instead of a template?
You can check for compile time with
static if(__ctfe)
