implementing letter sequentials

aaronpowell · Dec 4, 2011 · fc28d56 · fc28d56
1 parent d031cad
commit fc28d56
Showing 1 changed file with 17 additions and 5 deletions.
diff --git a/lib/tbd.js b/lib/tbd.js
@@ -131,11 +131,23 @@
     };
 
     utils.sequential = function(start) {
-        return function () {
+        if (start.constructor === Number) {
-            var x = start;
+            return function () {
-            start++;
+                var x = start;
-            return x;
+                start++;
-        };
+                return x;
+            };
+        } else if (start.constructor === String) {
+            var letters = 'abcdefghijklmnopqrstuvwxyz'.split('');
+            start = letters.indexOf(start);
+            return function () {
+                var x = start;
+                start++;
+                return letters[x];
+            };
+        } else {
+            throw 'This type is not supported for sequential values at the moment';
+        }
     };
 
     this.tbd.utils = utils;