Std: std::iter::range

src/std/iter/range.no

@@ -0,0 +1,25 @@
+pub type RangeIter (
+    head: Int,
+    end: Int
+)
+
+impl Iter<Int> for RangeIter {
+    fn next(self): Option<Int> {
+        if self.head < self.end {
+            let n = Some(self.head.copy())
+            self.head = self.head + 1
+            n
+        } else {
+            None()
+        }
+    }
+}
+
+pub fn range(start: Int, end: Int): RangeIter {
+    RangeIter(head: start, end)
+}
+
+pub fn rangeClosed(start: Int, end: Int): RangeIter {
+    RangeIter(head: start, end: end + 1)
+}
+

src/std/prelude.no

@@ -11,6 +11,7 @@ pub use std::{
     copy::{ Copy, copy },
     ord::{ Ordering, Ord },
     iter::{ Iterable, Iter, Collector },
+    iter::range::{ range },
     list::List,
     never::Never,
     panic::{ panic, todo },