Object Oriented Programming languages make developing programs to run on multiple operating systems much easier. All you need is a class library of common functions that has a separate version you can link in for each of the operating systems you want to support where the public interface to the multiple copies of those classes is the same for each platform. It is then a simple matter of linking in the appropriate verion of the library for each operating system.

Cross Platform Programming

For anyone still using a dialup connection to connect to the internet, it may not always be convenient to read all your emails during the one session online and it may not be worth dialing back in just to see the rest of your emails. Fortunately most email clients download all your emails while you are connected and allow you to read them whenever you like without having to be connected to do so.

Reading Your Mail Offline

In this article on dial up internet connections we look at how we can use internet connection sharing to provide access to the internet from multiple computers on a network while only requiring one of them to have a modem attached.

Sharing an Internet Connection

This isn’t just a matter of “do what I say and not what I do”. Any web sites I create now will be written exactly the way that I say that the HTML and CSS should be written. The sites where the code in the pages doesn’t match what the content says you should do are the way they are for a number of reasons all of which relate to when certain things were first written. I really wish I could wave a magic wand and convert all of the code to work exactly the way I say to do it.

Why Doesn’t My Site Do What I Say You Should Do With HTML And CSS?

A common question I see asked by web newbies is what screen resolution that they should design their web pages for. You can tell that they are newbies because anyone with any experience of the web knows that screen resolution is irrelevant and that it is the area in the browser that the page displays in that matters.

So having discarded screen resolution completely, just how do we determine the appropriate Web Page Width?

When is text not text? When it is a part of an image. As far as most computer programs are concerned text and images are two completely different things and any text that you have placed inside an image is just a part of that image and can’t be read by the program. There are a few exceptions to this all of which involve optical character recognition.

Text in Images

Do you backup your computer? You should. Here are a number of reasons why you need to backup as well as information on what to backup.

Backups

To ensure your computer remains secure you should have one login per user with just the access that is required for day to day use and one login with admin access to use for those one off tasks that actually require full access. Most of the time you will not even need to log in to the admin account except for running system utilities as the ‘run as’ command will handle most admin tasks.

The Admin Login

Between now and 5th September (Father’s Day in Australia) I am offering my advanced form2mail script at half price. All you need to do in order to get the price reduction is enter the word father in the discount field when making your purchase.

Hidden files are much easier to reference in Linux than in other operating systems. It all comes down to a single character on the front of the name.

Hidden Files

This example of my cookie toolbox in action allows you to set up a web page on my site that links to your fifty favourite web pages.

Your Favourites

Cookies are the main way of retaining information between one web page and the next and the only way to retain information between different browser sessions. Cookies are supported by both JavaScript and server side processing. Cookies are however limited in the amount of data they can store. Each domain can store up to 20 cookies with up to 4k of data in each with a maximum of about 300 cookies being able to be stored in total.

By using my cookie toolbox you make processing of cookies in JavaScript easier as well as being able to store an array of values into a single cookie.

A Cookie ToolBox