I can't seem to think of any, but there are thousands of one liners that express 'computer science is about ideas and methods, not code.'

In perl, there is more than one way to do it. That means there is more than one way to write it down. Therefore, you should probably explain your ideas/algorythms in words and not code.

Now I remember one quote (can't think of the source though):

A computer scientist never writes in anything less portable than a #2 pencil.

It is important to talk about ideas higher than the code. For example, is sexeger a code post or a discussion post?

I would rather look at many nodes that specifically go over techniques than search through code for a particular gem.