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by ashton314 1079 days ago
Building a really simple LISP interpreter. I had a few years of tinkering under my belt. One day I came home from school after reading, SICP, I think. I sat down at the computer and hacked together a little LISP interpreter in less than an hour. I was stunned. Then I realized that I too could make programming languages, and that programming languages were just tools other (really smart!) people had put together, and that I could understand them.

Also, learning Git was incredible to my confidence in modifying code.