Lier

Lier reverses return value of method which end with '?'. (without respond_to?)

install it yourself as:

$ gem install lier

require 'lier'

p (1..10).include?(3)     #=> true
p (1..10).include?(100)   #=> false
p [1, 2, 3].all?(&:odd?)  #=> false
p [1, 2, 3].any?(&:odd?)  #=> true

using Lier

p (1..10).include?(3)     #=> false
p (1..10).include?(100)   #=> true
p [1, 2, 3].all?(&:odd?)  #=> true
p [1, 2, 3].any?(&:odd?)  #=> false

Bug reports and pull requests are welcome on GitHub at https://github.com/siman-man/lier. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

The gem is available as open source under the terms of the MIT License.