comb - npm Package Compare versions

Comparing version 0.1.8 to 0.1.9

History.md

@@ -0,1 +1,5 @@
+#0.1.9 / 2012-09-22
+* Change comb.array.intersection to not use recursion
+* added `comb.wait`
+
 #0.1.8/2012-09-10
@@ -2,0 +6,0 @@ * Added travis CI build

lib/promise.js

@@ -760,2 +760,43 @@ var hitch = require("./base/functions").hitch,
 
+/**
+ * Ensures that a promise is resolved before a the function can be run.
+ *
+ * For example suppose you have to ensure that you are connected to a database before you execute a function.
+ *
+ * ```
+ * var findUser = comb.wait(connect(), function findUser(id){
+ *      //this wont execute until we are connected
+ *      return User.findById(id);
+ * });
+ *
+ *  comb.when(findUser(1), findUser(2)).then(function(users){
+ *      var user1 = users[0], user2 = users[1];
+ *  });
+ *
+ * ```
+ *
+ * @param args variable number of arguments to wait on. See {@link comb.when}.
+ * @param {Function} fn function that will wait.
+ * @return {Function} a function that will wait on the args to resolve.
+ * @memberOf comb
+ * @static
+ */
+function wait(args, fn) {
+    var args = argsToArray(arguments), resolved = false;
+    fn = args.pop();
+    var p = when(args);
+    return function waiter() {
+        if (!resolved) {
+            args = arguments;
+            return p.chain(function doneWaiting() {
+                resolved = true;
+                return fn.apply(this, args);
+            }.bind(this));
+        } else {
+            return when(fn.apply(this, arguments));
+        }
+    }
+}
+
+
 base.merge(exports, {
@@ -765,2 +806,3 @@ isPromiseLike:isPromiseLike,
     wrap:wrap,
+    wait:wait,
     serial:serial,
@@ -767,0 +809,0 @@ chain:chain,

package.json

 {
     "name":"comb",
     "description":"A framework for node",
-    "version":"0.1.8",
+    "version":"0.1.9",
     "keywords":["OO", "Object Oriented", "Collections", "Tree", "HashTable", "Pool", "Logging", "Promise", "Promises", "Proxy"],
@@ -16,7 +16,7 @@ "repository":{
     },
-    "devDependencies" : {
-        "it": "0.0.5"
+    "devDependencies":{
+        "it":"0.0.5"
     },
-    "scripts": {
-        "test": "make test-travis"
+    "scripts":{
+        "test":"make test-travis"
     },
@@ -23,0 +23,0 @@ "engines":{

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Total package byte prevSize

1633623

increased by0.29%

Lines of code

11296

increased by0.36%

No dependency changes