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Add example for uint::range_step. #6841

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Add example for uint::range_step. #6841

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15 changes: 12 additions & 3 deletions src/libstd/num/uint_macros.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -64,9 +64,18 @@ pub fn ge(x: $T, y: $T) -> bool { x >= y }
pub fn gt(x: $T, y: $T) -> bool { x > y }

#[inline(always)]
///
/// Iterate over the range [`start`,`start`+`step`..`stop`)
///
/**
* Iterate through a range with a given step value.
*
* # Examples
* ~~~ {.rust}
* let nums = [1,2,3,4,5,6,7];
*
* for uint::range_step(0, nums.len() - 1, 2) |i| {
* println(fmt!("%d & %d", nums[i], nums[i+1]));
* }
* ~~~
*/
pub fn range_step(start: $T, stop: $T, step: $T_SIGNED, it: &fn($T) -> bool) -> bool {
let mut i = start;
if step == 0 {
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