3 ways to monkey-patch without making a mess

Monkey Patching. When you first try Ruby, it’s amazing. You can add methods right to core classes! You don’t have to call Time.now.advance(days: -1), you can write 1.day.ago! It makes Ruby a joy to read and write. Until…

You hit weird bugs because a patch changed Hash.

You get confused about which code actually ran, so you can’t debug it when it breaks.

And you finally figure out that all your problems were caused six months ago, when you monkey-patched Enumerable to make one line of code fiv...