Added List.where method and tests.

2014-02-15 00:42:14 -06:00
parent c67b239d06
commit 3409d588e5
3 changed files with 24 additions and 0 deletions
--- a/builtin/core.wren
+++ b/builtin/core.wren
@ -16,4 +16,12 @@ class List {
    }
    return result
  }
+  
+  where (f) {
+    var result = []
+    for (element in this) {
+      if (f.call(element)) result.add(element)
+    }
+    return result
+  }
 }