At the start of the learning curve this advice may not help a lot, but the conventional wisdom is: first create a unit test for the code you are about to change, then make the change. The idea is that you write a regression test that confirms the current behavior doesn't get broken by changes that you make. It's smart to also write a test the confirms the expected new behavior works too (when it's implemented of course).

The other important thing is to use a revision control system. That allows you to easily back out changes and to compare what you have now with some past version.

True laziness is hard work

In reply to Re^3: PLEASE Help with this script by GrandFather
in thread PLEASE Help with this script by ksolomon

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