pub fn find<T: std::clone::Clone>(ls: @List<T>, f: &fn(&T) -> bool) -> std::option::Option
Search for an element that matches a given predicate
Apply function f to each element of v, starting from the first.
When function f returns true then an option containing the element
is returned. If f matches no elements then none is returned.
Prefix searches with a type followed by a colon (e.g.
fn:) to restrict the search to a given type.
Accepted types are: fn, mod,
struct (or str), enum,
trait, typedef (or
tdef).