#![crate_name="cci_impl_lib"] pub trait uint_helpers { fn to(&self, v: usize, f: F) where F: FnMut(usize); } impl uint_helpers for usize { #[inline] fn to(&self, v: usize, mut f: F) where F: FnMut(usize) { let mut i = *self; while i < v { f(i); i += 1; } } }