parallelPerform serialPerform

lib/Array.js

@@ -287,6 +287,57 @@
 				}
 			});
 		},
+
+		parallelPerform: function() {
+		  var args = this.slice.call(arguments).slice();
+		  var fn = args.pop();
+
+		  if (this.length == 0) {
+		    fn(null);
+		    return;
+		  }
+
+		  var completed = 0;
+		  var err = null;
+		  var self = this;
+		  args.push(function(error){
+		    err = error;
+		    completed ++;
+		    if (completed == self.length) {
+		      fn(err);
+		    }
+		  });
+		  this.forEachCall.apply(this, args);
+		  return this;
+		},
+
+		serialPerform: function(functionName) {
+		  var args = this.slice.call(arguments).slice(1);
+		  var fn = args.pop();
+
+		  if (this.length == 0) {
+		    fn(null);
+		    return;
+		  }
+
+		  args.push(function(error){
+		    if (error) {
+		      fn(error);
+		      return true;
+		    } else {
+		      return false;
+		    }
+		  });
+
+		  for (var i = 0; i < this.length; i ++) {
+		    if (this[i][functionName].apply(this.args)) {
+		      break;
+		    }
+		  }
+
+		  this.forEachCall.apply(this, args);
+		  return this;
+		},
 
 		mapPerform: function(functionName)
 		{