On Friday, 8 November 2013 at 13:10:10 UTC, Dicebot wrote:
On Friday, 8 November 2013 at 12:43:37 UTC, Colin Grogan wrote:
import std.stdio;
void main()
{
Column!string col1 = new Column!string( {return "test"; },
"Hello, ");
Column!string col2 = new Column!string( {return vars[0]; },
"World"); // Compilation fail!! Delegate cant see vars[0]
writef("%s", col1.nextValue);
writefln("%s", col2.nextValue);
// I want it to print "Hello, World" here
}
Delegate refers to context it was created in. Your delegates
are created in `main()` scope/context and thus can only access
its stack frame. You can't access caller context from delegates.
Ok, that clarifies that then :(
Is there any alternative to using delegates for this behaviour?
i.e. passing a function at object construct time, and let that
function have access to the objects members?
