How to keep Rails questions from killing your productivity

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While you write code, questions pop into your head constantly: How do I call this method? What options does it take? What happens if I pass an object instead of a number?

These questions destroy your productivity. When you don’t know the answer right away, you forget what you were doing. You get yanked out of your flow, and it takes a half hour to get back to where you left off.

So how do you find the answers you need wi...