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Today I Learned

Aggressively eliminate state. After working with ReactJS for a bit, I am starting to see the merits of eliminating state. I’m even beginning to like methods prefixed with get and set. Eliminating state means eliminating side-effects.

Writing adolescent JS code seems to lead to better JS code. What I mean by adolescent code, is that it refuses to take responsibility. It lets somebody else own the state of the world. All it does is ask for values, and do something with them.

If you want to launch Vim from a Ruby script, use system 'vim'. Backticks won’t work, because they want to consume STDOUT. exec takes over the process, so you couldn’t do work afterwords. system works.