Computers & Programming: Page 11

Create a list with checkboxes and assign a price to each item. As your customers check or uncheck the boxes, they'll see the estimated price below change in accordance. This is a quick and easy trick visitors to your website will definitely appreciate.

JOIN commands in MySQL can be scary, and a bit tricky to master - but that's where this video comes in. This clearly and succintly demonstrates what a JOIN in MySQL is and how you can painlessly use these commands in your projects.

When you use the UNION command, you are stacking one result set on top of another. This is slightly different from the JOIN command, and this video is here to explain what the difference is and the best way to use UNION in your own MySQL database programs.

Wait, a query within a query? This function is possible within the framework of MySQL. Learn how to correctly implement a subquery or sub select in your next database project and avoid a couple perils that will make your program unstable.

This tutorial shows you how to set up an interactive chat box on your website, so you can allow members to communicate with each other in real time. It can be a bit tricky to master, but will definitely be worth it for your site in the long run.

Mac owners— life just got a little easier.

A ternary operator lets you smooth out your Python based program. This video shows you precisely how one works, why it's a good thing and how you can incorporate a ternary operator to your own Python based computer programming projects.

If you already grasp the basics of object oriented programming, this tutorial will be very easy for you. When you construct an object, you create it within the program (in this case, a program using Python), and when you destruct it, it deletes.

Including a file (also called a module) is easier in Python than in some other common programming languages. This video shows you how you can take a small, basic file and then incorporate it into your Python based computer program.

Whether you're an experienced programmer looking to add another language, or completely new to computer language and wanting to start with Java, this program is for you. After you've downloaded and installed your SDK, follow this tutorial to write your first Hello World program.

In Java, everything is an object, which can make it a little scary to start programming using this language. But that's what this tutorial is for! Here is how objects and object methods work when you're designing a program with Java.

Arrays are little pockets of data distributed throughout your program. They're useful because having arrays keeps you from needing to work with hundreds of variables when programming. This specific tutorial shows you how to work with arrays when you're using Java to program.

Start with the free Google Docs, which you can get with any Gmail account. Then get one of the free web form templates (this video uses the Contact Us form as an example) and then edit and embed it on your own website.

If you're trying to streamline your work on your Windows 7 PC, here's a handy little program to help you speed things up. Quick Cliq lets you you customize your Windows startup menu to give you one-click access to files, folders applications.

If you've got something on your Windows PC that you don't want to share with the world you're going to want to create a private, password protected folder. This simple video shows how to easily set it up. This works for Windows 7, Vista and XP.

Going, going... gone! Don't let your Windows 7 laptop battery go down on you. With this quick and helpful video, learn how to control your laptop's battery settings via Windows 7's power usage function to ensure you get every last drop of your battery's power.

Are you waiting forever to get your PC to boot up? Well, this how-to shows off a little program called Soluto which promises speed up your Windows machine's boot time. Find out exactly what's taking so long, and gain control over the startup process.

Python can be used for games, websites and operating system GUIs; and you can work with it on PCs, Macs or Linux machines. This tutorial shows you how to install the compiler and get started teaching yourself how to program in Python.

So you've mastered variables, and now it's time to take a look at functions and how they work on the very basic level in Python. This tutorial also takes a brief look at importing modules, and how they work in your Python program.

Functions allow you to repeat particular actions without having re-code them for every instance. This tutorial shows you how to set up and use your own functions when you're writing a program using Python. Make sure all your functions are well defined before you start using them!

When you're programming in Python, and make a variable into a string, that becomes an object. This tutorial shows you how to use string methods and object methods when you're teaching yourself how to write a program using the Python language.

This tutorial shows you the two basic types of loops in Python - While and For. Be careful that you don't accidentally write an infinite loop, but still be able to use them to increase the efficiency of your programs.

If you've learned other programming languages, you're likely already familiar with the break and pass flow control commands when programming loops. This video shows you how to use them when writing code in Python, and also how to use the continue trick in your program.

So are you a Windows or a Mac? Well, some days you may be one, and other days you may be the other, SO, this handle little how-to will show you how to use Quicksilver to boot up into either OS whenever you want.

If you need to take control of your Windows 7 start menu, you're going to want to watch this. Step-by-step instructions on how to personalize your start menu with a nifty little program called, Handy Start Menu. Then, you can see the programs you want, and hide the programs you don't want to see. That IS handy!

If you're not satisfied with your out-of-the-box version of Windows 7 or Vista then get ready to tweak it up good! With this video, you'll see how to use a little program called Ultimate Windows Tweaker to wrestle your software to perform the way YOU want it to. This software lets you get into the registry in a safe and easy way if you're not a computer wizard. Remember to always back up your system before toying with the registry.

Need to make a custom, digital clock that will run in all major desktop and smartphone browsers? This tutorial shows you how to employ Javascript functions to communicate in real time with web page elements to get a slick CSS animated clock. Cool, eh?

OK, so visitors are coming to your website and they're even leaving comments! Now, with some simple PHP array programming you can find out what browser and OS they're using. This tutorial shows you how to create a simple and efficient user agent sniff script to get the information you want. Sniff, sniff. Is that Chrome running on OS X I smell?

Find which airlines Google is providing free Wi-Fi on this holiday season, fix shutter lag on digital cameras, wipe your hard drive for free, improve your Wi-Fi router performance, adjust your television and monitor for accuracy, choose the best 1080p projector, use a single server that can handle OS X, Windows & Linux simultaneously, and use the best audio encoding system for Windows Media Center and Zune.

This half-hour episode of Hak5 covers several topics: Using a DSLR camera to create HD footage, building your own Google TV, unlocking & copying locked files with Lock Hunter, using PicPick for screen capture, using WinDirStat for analyzing & cleaning your hard drive, setting up a secure FTP server with Ubuntu Server, and secretly copying data from USB drives with USB Dumper.

HTML5 has great potential to eliminate browser compatibility issues and allow web games to be played cross-platform by mobile, PC, Mac, and Linux users. Impact is the first game development engine available for HTML5, as demonstrated in this video, and Weltmeister is the 2D level editor included in the release. This video will show you how to use Weltmeister to make 2D levels for your games.

The built-in operating system (BIOS) of your PC is the first thing it runs when it starts, and if you're having problems with your OS or other issues it's usually the place to go to fix them. Watch this video to learn the basics of the BIOS and how it can be used to change your boot order to make you PC boot from a CD.

If you're tired of how cluttered your Mac OS X desktop looks, there's a pretty simple solution. You can clean up your desktop icons with AppleScript and Automator. For full instructions you can read the Lifehacker post and watch the video to make it happen on your own computer.

Join the Pilot program and learn how to fly!  But you're not going to be flying airplanes in this Pilot program, you'll be trying your hands at Google's first laptop computer.

Without Goldeneye for the N64 there wouldn't be Call of Duty, plain and simple. If you still worship this classic game and want to probe it's depths by making a tool-assisted speedrun (TAS), watch this video. It will teach you the basics of making a TAS in Goldeneye and give you knowledge you can use in all of your TAS projects.

A TAS, in case you're outside too much to have heard of them before, is a tool-assisted speedrun. Basically you take a video game ROM and use some software like [http://rapidshare.com/#!download|240tl3|137149105|mupen64_0.5_with_rerecording_and_TAS_input_plugin.rar|5699 Mupen 64] to control the game's many parameters on a previously unattainable level. This allows for perfect manipulation of glitches and timing, and thus for much faster completions of the game than are possible unaided. This...

The side BLJ is a Super Mario 64 move only possible in a TAS that allows you to break parts of the game you never thought possible. This video will show you how to do the side BLJ and use it in your TAS's.

If you're going to make a really fast TAS keeping your character moving as fast as possible is crucial. This video features two Super Mario World TAS tips: how to use ZNES9 to set Mario's running speed as a high constant, and how to do walljumps impossible in the standard game.