Re: No $ for op overloads?
On Sat, Sep 5, 2009 at 1:31 AM, Nick Sabalausky wrote: > I made a simple struct that overloads opIndex and opSlice, and also exposed > a "length" property. But when I try to use $ on it, I got: > > Error: undefined identifier __dollar > > I tried making a property "__dollar" that just returned "length", but that > didn't change anything. > > What's going on? Any ideas? Nope, it's never been possible. :( You can do silly things like defining a global __dollar, but it's useless since it can't take params.
No $ for op overloads?
I made a simple struct that overloads opIndex and opSlice, and also exposed a "length" property. But when I try to use $ on it, I got: Error: undefined identifier __dollar I tried making a property "__dollar" that just returned "length", but that didn't change anything. What's going on? Any ideas?
Re: delegate !is null
On Fri, 04 Sep 2009 14:33:12 -0400, Saaa wrote:
class C
{
private int i;
int method()
{
return i;
}
}
class D
{
private int delegate(void) _deleg;
this(int delegate(void) d)
{
_deleg = d;
}
void write()
{
if(_deleg !is null)
}
writef(_deleg());
}
}
}
C c = null;
D d = new d;
d.function(c.method());
//This fails, as method is not availible for null.
d.function({return c.method();});
//This works but now I can't check whether c is null or not.
d.write(); //will fail.
Any suggestions?
Maybe you could rephrase your question in english. I can't really
understand what you are trying to do with this code.
i.e. "I want to be able to tell whether a delegate is null or not, how do
I do that". But you do that just like you said -- dg !is null.
-Steve
Re: delegate !is null
D should be like this :)
class D
{
private int delegate(void) _deleg;
private int _value; //
this(int delegate(void) d)
{
_deleg = d;
}
void write()
{
if(_deleg !is null)
}
_value = _deleg(); //
}
writefln(_value); //
}
}
delegate !is null
class C
{
private int i;
int method()
{
return i;
}
}
class D
{
private int delegate(void) _deleg;
this(int delegate(void) d)
{
_deleg = d;
}
void write()
{
if(_deleg !is null)
}
writef(_deleg());
}
}
}
C c = null;
D d = new d;
d.function(c.method());
//This fails, as method is not availible for null.
d.function({return c.method();});
//This works but now I can't check whether c is null or not.
d.write(); //will fail.
Any suggestions?
