nil blank empty

Good to keep in mind. blank? (Added by rails active support) applies to nil and empty strings. False.blank? also evaluates to true... not idiomatically reasonable though, so I might not use that one.

irb(main):015:0> false.blank?
=> true
irb(main):006:0> "".blank?
=> true
irb(main):007:0> "".nil?
=> false
irb(main):008:0> "".empty?
=> true
irb(main):009:0> nil.blank?
=> true
irb(main):010:0> nil.nil?
=> true
irb(main):011:0> nil.empty?
NoMethodError: undefined method `empty?' for nil:NilClass
from (irb):11
from :0