Maintainable code

Martin McBride, 2017-03-21
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Software often has a very long lifetime - sometimes an application can live on for many years. During that time it might have many new version updates:

• Minor updates, e.g. V5.1 to V5.2 usually offer a few small extra features and fix a few bugs.
• Major updates, e.g. V7 to V8 usually offer major extra features and perhaps a new interface.

When you write code, it is important to do it in a way which takes account of the fact that you will probably need to change the software later, maybe in ways that you haven't even thought of yet. We call this maintainable code, and the following topics show ways to help you create code which is easier to maintain.

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Creating robust programs

1. Creating robust programs
2. Writing code
3. Malicious attacks
4. - Security concepts
5. - Motives
6. - Exploits and defences
7. - Example - SQL injection
8. Maintainable code
9. - Basic rules
10. - Code structure
11. - Comments and layout
12. - Naming items
13. - Globals and side effects
14. - Change control

See also

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