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|
# frozen-string-literal: true
#
# The blank extension adds the blank? method to all objects (e.g. Object#blank?).
#
# To load the extension:
#
# Sequel.extension :blank
[FalseClass, Object, NilClass, Numeric, String, TrueClass].each do |klass|
# :nocov:
if klass.method_defined?(:blank?)
klass.send(:alias_method, :blank?, :blank?)
end
# :nocov:
end
class FalseClass
# false is always blank
def blank?
true
end
end
class Object
# Objects are blank if they respond true to empty?
def blank?
respond_to?(:empty?) && empty?
end
end
class NilClass
# nil is always blank
def blank?
true
end
end
class Numeric
# Numerics are never blank (not even 0)
def blank?
false
end
end
class String
# Strings are blank if they are empty or include only whitespace
def blank?
strip.empty?
end
end
class TrueClass
# true is never blank
def blank?
false
end
end
|
