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If you are on this page looking only for ways to handle Null values or Missing parameters, you can scroll down to the appropriate section, and skip the rest. Each section should be intelligible when read out of sequence.


Introduction

I have been programming with VBA for Access and Excel for quite some time, and I remember that even after several years of experience, I still had trouble with the different ways to represent the absence of something. The Tao teaches us that ...
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As a full time independent consultant for the past five years, I've heard that question all too often. Typical rates charged by a professional IT consultant or small consulting firm can range from $75 to $200 per hour or more. Other professional services, including attorneys, auto mechanics, and certified public accountants - who frequently charge as much or more than an IT consultant - can be among those complaining about paying these "high rates" when seeking professional IT assistance.

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A limerick is a kind of short, light-hearted poem that is typically humorous and traditionally often ribald or lecherous. The key characteristic is that there is some sort of "punch line" at the end.

Almost anyone can create a poem in the limerick format. It's much trickier to create one that actually works; that is, one that that has a flawless meter, a free-flowing introduction, and a "surprise" at the end.

The aim of this article is to provide some practical advice to help you write limericks. Knowing how to write limericks -- ...
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Creating your own images on-the-fly isn't hard at all, especially with the help of PHP and GD.

GD is a graphics library (http://www.boutell.com/gd/) , and PHP has an extension that gives easy access to the major GD functions, giving you the ability to use GD to generate images (JPEGs, GIFs, PNGs, etc) on-the-fly. This tutorial is aimed at people who come across the need for dynamic images, discover that PHP can do it with GD, but have a hard time understanding how to use it.

The tutorial is offered in two versions, a video version, and a...
 
 

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