paris.js 30-10-2013

fibo.js

require('colors');

function* genFibo() {
	var f1 = 0, f2 = 1;
	while (true) {
		console.log(("genFibo loop: " + f1).green)
		yield f1;
		var f = f1 + f2;
		f1 = f2;
		f2 = f;
	}
}

var g = genFibo();

for (var i = 0; i < 10; i++) {
	var v = g.next();
	console.log(("fibo(" + i + ")=" + v.value).blue);
}

step-by-step.js

require('colors');

function* myFirstGenerator() {
	console.log("generator before yield hello".green);
	yield "hello";
	console.log("generator before yield world".green);
	yield "world";
	console.log("generator at end".green);
}

console.log("starting program".blue);
var g = myFirstGenerator();
console.log("generator created".blue);
var v1 = g.next();
console.log(("next #1 returned " + JSON.stringify(v1) + "").blue);
var v2 = g.next();
console.log(("next #2 returned " + JSON.stringify(v2) + "").blue);
var v3 = g.next();
console.log(("next #3 returned " + JSON.stringify(v3) + "").blue);

tree.js

var tree = {
	left: {
		left: { left: { value: 1 }, value: 3,  right: { value: 8 } },
		value: 10,
		right: { value: 13 }
	},
	value: 20,
	right: { value: 22 }
};

function* walk(t) {
	if (t.left) yield* walk(t.left);
	yield t.value;
	if (t.right) yield* walk(t.right);
}

var walker = walk(tree);

for (var v of walker) console.log(v);