Whether to write standard code or re-write and learn code?

When I started developing for the iphone I had to make some decisions about how to structure code. I was face with a dilemma. Do I write code which I'll use often or do I reuse code.

I came to the decision to write code as I needed it, so that I'd learn and remember it. I spoke to friends at the time and this was the decision I arrived at.

Previously I'd always written standard functions and never remember how to code these requirements afterwards.

I've made the wrong decision.

I end up with more lines of code and code which I can never remember anyway. So the answer to write standard functions.

by JM