<pedrocorreia.net ⁄>

<Recursive rights and wrongs ⁄ >

clicks: 3565 3565 2006-08-08 2006-08-08 goto programacao myNews programacao  Bookmark This Bookmark This

I don't know if Jack Altiere is right when he says many programmers are afraid of recursion, but if it's true I expect they fall into two categories:

1. Those who have not learned what recursion is yet.
2. Those who have learned that it is often better not to use it.

Jack's short introduction is probably good for those in category one, but if you want to ever consider yourself an experienced programmer you should be trying to get into category two. This article is intended to help you get to category two as quickly as possible.

Some simple recursion

Recursive functions are easy. The only thing that you have to do to write a recursive function is to have it call itself. That's pretty easy and you may think that there isn't much reason to use it, but it can be very powerful. It turns out that there are all sorts of things that we might want to do that are easier to think of in terms of recursion. We won't go into all of them here, but if you look through your code you'll probably find that you have plenty of examples of them.

We're going to study a mathematical function that can be handled in all sorts of interesting ways - integer power calculations. I'm going to use Javascript (even though it wouldn't normally be my first choice for this sort of testing) because more people are likely to be able to run the tests themselves if I do so.

este é só um excerto do artigo, para aceder ao artigo completo, clique no link em baixo:
this is just a small excerpt from the article, to access the full article please click in the link below:


Subscribe News RSS  Subscribe News Updates by E-mail

myNews <myNews show="rand" cat="programacao" ⁄>

RouterJs: easy routing for your ajax Web applications new ...

RouterJs is a simple router for your ajax web apps. It's build upon History.js which means that Rout (...)

clicks: 17549 17549 2012-05-14 2012-05-14 goto url (new window) haithembelhaj.g... goto myNews programacao

Backbone computed properties new ...

This gist shows one way to implement read- and write-enabled computed properties on a Backbone Model (...)

clicks: 17325 17325 2012-05-13 2012-05-13 goto url (new window) https://gist.gi... goto myNews programacao

Android Query new ...

Android-Query (AQuery) is a light-weight library for doing asynchronous tasks and manipulating UI el (...)

clicks: 17367 17367 2012-05-12 2012-05-12 goto url (new window) code.google.com... goto myNews programacao

Create Instagram Filters With PHP new ...

In this tutorial, I'll demonstrate how to create vintage (just like Instagram does) photos with PHP (...)

clicks: 17236 17236 2012-05-12 2012-05-12 goto url (new window) net.tutsplus.co... goto myNews programacao

HTML5 jQuery Paint Plugin new ...

Websanova Paint is a HTML5 canvas based jQuery plugin. It allows you to free paint on a canvas area (...)

clicks: 28313 28313 2012-05-12 2012-05-12 goto url (new window) websanova.com/t... goto myNews programacao

Sass vs. LESS vs. Stylus: Preprocessor Shootout new ...

CSS3 preprocessors are languages written for the sole purpose of adding cool, inventive features to (...)

clicks: 16934 16934 2012-05-11 2012-05-11 goto url (new window) net.tutsplus.co... goto myNews programacao

Real-time Applications With Node.js and Socket.IO new ...

Hey everyone! Sorry about the long pause since the last blog post, life has been quite hectic for th (...)

clicks: 17582 17582 2012-05-11 2012-05-11 goto url (new window) codingcookies.c... goto myNews programacao

15 Handpicked jQuery Drop Down Menus Tutorials new ...

Here we are presenting another brilliant collection of 15 jQuery navigation menu that you can downlo (...)

clicks: 16254 16254 2012-05-10 2012-05-10 goto url (new window) smashingapps.co... goto myNews programacao