Simple Koa Example

index.js

var koa = require('koala');
var app = koa();

app.use(function *(){
	//console.log(this.req, this.path);
	if(this.path==='/hey'){
		this.body = yield dogs;
	}else{
		if(this.path!=='/favicon.ico'){
			// don't call the function...it needs to return a function
			var b = yield home;
			this.body = b;			
		}
	}
});

function dogs(cb){
	cb(null, "Sup Dog");
}

// called functions take a callback
function home(cb){
	setTimeout(function(){
		return cb(null, "Home!!");
	}, 300);
}

app.listen(3000);

// run with harmony
// node --harmony index.js