detect like in ruby

ljharb · Oct 25, 2010 · 441f3b4 · 441f3b4
1 parent 33577aa
commit 441f3b4
Showing 1 changed file with 12 additions and 0 deletions.
diff --git a/lib/hash.js b/lib/hash.js
@@ -36,6 +36,14 @@ function Hash (hash, xs) {
             });
             return Hash(acc);
         },
+        detect : function (f) {
+            for (var key in hash) {
+                if (f.call(self, hash[key], key)) {
+                    return hash[key];
+                }
+            }
+            return undefined;
+        },
         reduce : function (f, acc) {
             var keys = Object.keys(hash);
             if (acc === undefined) acc = keys.shift();
@@ -145,6 +153,10 @@ Hash.filter = function (ref, f) {
     return Hash(ref).filter(f).items;
 };
 
+Hash.detect = function (ref, f) {
+    return Hash(ref).detect(f);
+};
+
 Hash.reduce = function (ref, f, acc) {
     return Hash(ref).reduce(f, acc);
 };