TIL: How to Prettify Ruby's inject Method

So many times using Enumerable#inject I've forgotten to return the value object.

(1..10).inject({}) { |hash, x| hash[x] = true; hash }

Which is also kinda ugly. Instead, use each_with_object which doesn't care about the return type.

(1..10).each_with_object({}) { |x, hash| hash[x] = true }

Note that the block params are switch around though.