On 10/09/2014 08:06 PM, Joel wrote:
On Tuesday, 30 September 2014 at 17:27:09 UTC, Adam D. Ruppe wrote:
On Tuesday, 30 September 2014 at 17:22:44 UTC, Gary Willoughby wrote:
What is a sink delegate?
Instead of
string toString() { return "foo"; }
for example, you would use:
void toString(void delegate(string) sink) { sink("foo"); }
The sink argument there is then free to view and discard the data or
to make a private copy using whatever scheme it desires.
How do you use that toString? Maybe an example? Below is my failed effort.
import std.stdio;
struct Try {
string name;
long age;
void toString(void delegate(string) sink) {
sink("foo");
}
}
void main() {
Try t = Try("Joel", 35);
writeln(t);
}
The signature of that toString is different from what I have been seeing
and using. The following works:
void toString(void delegate(const(char)[]) sink) const {
Ali
