Re: Delegate function access to classes local variable

[Dicebot]

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.