On 10.01.2012 15:53, Jacob Carlborg wrote:
On 2012-01-10 14:48, simendsjo wrote:
On 10.01.2012 14:43, Mike Parker wrote:
On 1/10/2012 10:05 PM, simendsjo wrote:
If I want to have a method taking a callback function, I have to
specify
if it should take a function or delegate even if I don't really care.
What's the best way to accept either? I cannot see any wrapper for
something like this in std.typecons.
The simple way:
void callback(int i, void delegate(int) dg)
{
dg(i);
}
void callback(int i, void function(int) fn)
{
void wrap(int j)
{
function(j);
}
callback(i, &wrap);
}
Yeah, but a bit tedious.. I found toDelegate:
http://dlang.org/phobos/std_functional.html#toDelegate
Or make it a template parameter and check if it's callable using
std.traits.isCallable.
Like this?
void callback(F)(int i, F fn) if(isCallable!F) {
fn(i);
}
.. but then the parameters wouldn't be documented.
