The column wrapping and lack of indentation make this cheat sheet a bit hard to use. Also not specifying that one of these is the function definition and one is it's usage makes it hard to glance over:
add(a, b) -> a + b
add(1, 2) == 3
What's with the ads in the middle?
Granted I'm not proficient in CS, but this seems chaotically organized and the columns make the code fairly incomprehensible.