Cleaner syntax for writing OR Query in Rails 5, 6. And also add #or support to Rails 3 and 4.

100 days learning the Ruby World

ruby syntax extension: double is {|x| x*2}; fib is memoized {|n| n<2 ? 1 : fib(n-2)+fib(n-1)}

Helpers for defining sequences of constants in Ruby using a Go-like syntax

Tiny DSL for idiomatic date parsing and formatting in Ruby

Lambda shorthand: fn{ _1 * 2 } instead of lambda{|x| x*2}