Skip to main content

Refactoring in Visual FoxPro

(this article was written prior to the Code Analyst but identifies the origins of where this tool came from)
With the sheer number of functions, commands and tools available within Visual FoxPro, it's easy to find more than one way to do the job.

So multiply the number of ways by the number of developers on your team, and it's pretty easy to see why code maintenance is pretty important.

Refactoring is about making code more useable (not changing the functionality but making it easy to understand and maintain).

This article presents 3 core concepts:
1 - Never Use Keywords for variable or field names
2 - Use the most recent functions where appropriate
3 - Encapsulate, encapsulate, encapsulate

Comments

Popular posts from this blog

Using VFPX : A Walkthrough features in CodePlex

This white paper is from a session originally given at Southwest Fox 2008, introducing many developers to how CodePlex works and how they can get involved with the VFPX Project.

You can also hear the audio of this session here.

So you want to help out in VFPX? This session goes through how to get started with the VFPX Project and dealing with issues like source control, the Wiki-style attitude of Codeplex and more.

What Is VFPX?

VFPX is the future of the Visual FoxPro IDE and developer tools we currently know today. It is based on the VFP 9 SP2 core but realistically, it is more like taking all of the tools that have grown up around the VFP engine and making them ours to grow and enhance. Microsoft is no longer doing active development on Visual FoxPro; the product is officially supported until 2015 but then many developers still have VFP 6 applications running and VFP6 support ended in 2004.

Visual FoxPro has a long running tradition of community enhancements. Back in 1990, the FoxPro Co…

VFPX: New Tools based on Existing Code

Tools like Code Analyst and Class BrowserX all use code from existing Visual FoxPro tools. This is possible because in 2007, Microsoft released the code for all of their xBase components with a special license. This license allows developers to create and update components and applications based on these components. It explicitly gives two rights:

Copyright – "a non-exclusive, worldwide, royalty-free copyright license to reproduce the software, prepare derivative works of the software and distribute the software or any derivative works that you create"

Patent – "a non-exclusive, worldwide, royalty-free patent license under licensed patents to make, have made, use, practice, sell, and offer for sale, and/or otherwise dispose of the software or derivative works of the software"

There are some limitations; primarily that you can't use the Microsoft name, must include any existing copyright notices, and that the software is provided "as-is" but the real bene…

Using the VFPX Code Analyst

The Code Analyst is a tool in VFPX designed to make FoxPro application development and code maintenance easier. It combines the extensibility with a Code references-like interface, analyzing pieces of code or entire projects and identifying key areas for refactoring - similar to the Code Analysis tool in Visual Studio.

You can identify your own project rules to highlight key areas of your application that may not match your own coding standards.

A PDF version is available here