Add `5.timesi() |idx| { ... }`

1 files changed, 14 insertions, 1 deletions

diff --git a/src/libcore/uint-template.rs b/src/libcore/uint-template.rs
index 4f35f1a8756..e3b4f08ddaa 100644
--- a/src/libcore/uint-template.rs
+++ b/src/libcore/uint-template.rs
@@ -11,7 +11,7 @@ export range;
 export compl;
 export to_str, to_str_bytes;
 export from_str, from_str_radix, str, parse_buf;
-export num, ord, eq, times;
+export num, ord, eq, times, timesi;
 
 const min_value: T = 0 as T;
 const max_value: T = 0 as T - 1 as T;
@@ -120,6 +120,19 @@ impl times of iter::times for T {
     }
 }
 
+impl timesi of iter::timesi for T {
+    #[inline(always)]
+    /// Like `times`, but with an index, `eachi`-style.
+    fn timesi(it: fn(uint) -> bool) {
+        let slf = self as uint;
+        let mut i = 0u;
+        while i < slf {
+            if !it(i) { break }
+            i += 1u;
+        }
+    }
+}
+
 /// Parse a string to an int
 fn from_str(s: ~str) -> option<T> { parse_buf(str::bytes(s), 10u) }