On 26/06/2011 08:08, Nub Public wrote:
Is it possible to get the signature of a function and make a delegate
type from it?
Something like this:
bool fun(int i) {}
alias (signature of fun) DelegateType;
DelegateType _delegate = delegate(int i) { return i == 0; };
----
alias typeof(&fun) FuncType;
FuncType _function = function(int i) { return i == 0; };
----
Note that fun() here has no context, so FuncType is an alias for bool
function(int). If you truely want a delegate type, you could use the
following:
----
import std.traits;
template DelegateType(alias t)
{
alias ReturnType!t delegate(ParameterTypeTuple!t) DelegateType;
}
DelegateType!fun _delegate = (int i) { return i == 0; };
----
The other alternative is to just use auto, there's no guarantee it will
be the same type as the function though:
----
auto _delegate = (int i) { return i == 0; }
----
Hope this helps.
--
Robert
http://octarineparrot.com/
