<pedrocorreia.net ⁄>

<What arrays and pointers have in common - or - Why arrays start at zero ⁄ >

clicks: 3187 3187 2008-05-13 2008-05-13 goto programacao myNews programacao  Bookmark This Bookmark This

Every now and again someone asks why do array indexes start at zero rather than one? It's a good question, because the 1st item in the array is...well..the 1st, not the 0th. Although the answer is easily found on the web, I figured it would tie in nicely with where we left off last time - looking at memory in .NET. Not surprisingly this stems from the good old C days (and perhaps even earlier). You see, back then, arrays and pointers were highly related. I actually remember thinking of them as identical things with different syntax. Once you see that arrays are just syntactical sugar to pointers, you'll understand why everything starts at zero. I'm not sure how much of this still applies in modern languages. I assume that arrays and pointers are still closely correlated - but I'm pretty sure zero now sticks around for convention. Everything below is in C.

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: 16190 16190 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: 16010 16010 2012-05-13 2012-05-13 goto url (new window) https://gist.gi... 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: 15681 15681 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: 26780 26780 2012-05-12 2012-05-12 goto url (new window) websanova.com/t... goto myNews programacao

Android Query new ...

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

clicks: 16237 16237 2012-05-12 2012-05-12 goto url (new window) code.google.com... 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: 15403 15403 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: 16088 16088 2012-05-11 2012-05-11 goto url (new window) codingcookies.c... goto myNews programacao

Gettings to know Backbone.ks new ...

In this series, we're going to learn how to build a fully functional contacts manager using Backbone (...)

clicks: 15001 15001 2012-05-10 2012-05-10 goto url (new window) net.tutsplus.co... goto myNews programacao