I'm experimenting with closures:
fn call_it(f: ||) {
f();
}
let klosure = || println("closure!");
call_it(klosure);
call_it(klosure); //Blows up here
Passing klosure into call_it() twice causes a compiler error on account of the closure value getting moved:
closures.rs:16:13: 16:20 error: use of moved value: `klosure`
closures.rs:16 call_it(klosure);
^~~~~~~
closures.rs:15:13: 15:20 note: `closure` moved here because it has type `||`, which is a non-copyable stack closure (capture it in a new closure, e.g. `|x| f(x)`, to override)
closures.rs:15 call_it(klosure);
^~~~~~~
The compiler actually makes a suggestion on how to resolve the issue, but I've not figured out a way to successfully apply it.
Any suggestions? :D
note: `closure` moved here because it has type `||`, which is a non-copyable stack closure (capture it in a new closure, e.g. `|x| f(x)`, to override)
This means that you would write || closure()
instead of closure
: you are passing in a new closure which calls your first closure.