Mastering Regular Expressions
I've worked with Regular Expressions before but not as intensive right now for the SEO Tool that I was talking about earlier.
I have to parse through a source code to find individual items such as keywords, title tag, descriptions, headers, etc. I admit, it's looks confusing but it's starting to grow on me. Knowing regular expressions help streamline everything, especially if you are going through large files.
Having a basic knowledge of RegEx will help you in the long run because you will definitely run into it one day. It is found everywhere, email validations, url validations, mod_rewrites, etc.. True RegEx masters edits their source code by using RegEx to find strings in their code and replace if necessary. I can say that I'm not at that point yet but maybe some day I will be!
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