Yflow
Generator based flow-control goodness for nodejs (and soon the browser), using thunks, letting you write non-blocking code in a nice-ish way.
Currently you must use the --harmony-generators flag when
running node 0.11.x to get access to generators.
Co is careful to relay any errors that occur back to the generator, including those within the thunk, or from the thunk's callback. "Uncaught" exceptions in the generator are passed to `yflows thunk.
Installation
$ npm install yflow
Example 1
var yflow = require('yflow');
function netGet(url, cb) {
setTimeout(function () {
cb(null, "response from url:" + url)
}, 500);
}
var net={
get:netGet,
post:netGet
}
var ynet=yflow.wrap(net);
yflow(function * () {
var ret = yield ynet.get("google.com");
console.log("ret is :" +ret);
console.log("sleep one second");
yield yflow.sleep(1000);
console.log("I'm awake!");
var p = yield[ ynet.post("f1"), ynet.post("f2"), ynet.post("f4")];
console.log(p);
})(function (e) {
if(!e){
console.log("OK!");
}else{
console.log(e.stack);
}
});Example 2
function netGet(url, cb) {
setTimeout(function () {
cb(null, "response from url:" + url)
}, 500);
}
yflow(function * () {
var wrapper=yflow.wrap(netGet)
var ret = yield wrapper("baidu.com");
console.log("ret is :" +ret);
console.log("sleep one second");
yield yflow.sleep(1000);
console.log("I'm awake!");
var p = yield[ wrapper("f4"), wrapper("f5"), wrapper("f6")];
console.log(p);
})(function (e) {
if(!e){
console.log("OK!");
}else{
console.log(e.stack);
}
});License
MIT