~rubyweekly | Bookmarks (4)

Weird Ruby: Double Aliased Enumerable Methods — Ruby is big on aliasing methods as a way to make code easier to read and Enumerable methods are commonly aliased. Can you think of the method that has three aliases?

Weird Ruby: Nil Conversions — nil is an object (a singleton instance of NilClass) and comes with its own methods that allow for conversions to other types.

Need for Speed: Using RuboCop with Prism — Prism (formerly YARP) is a Ruby parser that wants to be the only Ruby parser in town (notably, TruffleRuby is now using Prism.) The creator of RuboCop shares that the migration to Prism has begun there too, and he anticipates solid speed gains.

A 'Weird' Way to Filter Out Elements — Spoiler: It’s Enumerable#grep_v, which has an interesting property that makes it worth considering in some cases.