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class Object
##
# Returns true if the object is nil or empty (if applicable)
#
# [].blank? #=> true
# [1].blank? #=> false
# [nil].blank? #=> false
#
# @return [TrueClass, FalseClass]
#
# @api public
def blank?
nil? || (respond_to?(:empty?) && empty?)
end
end # class Object
class Numeric
##
# Numerics are never blank
#
# 0.blank? #=> false
# 1.blank? #=> false
# 6.54321.blank? #=> false
#
# @return [FalseClass]
#
# @api public
def blank?
false
end
end # class Numeric
class NilClass
##
# Nil is always blank
#
# nil.blank? #=> true
#
# @return [TrueClass]
#
# @api public
def blank?
true
end
end # class NilClass
class TrueClass
##
# True is never blank.
#
# true.blank? #=> false
#
# @return [FalseClass]
#
# @api public
def blank?
false
end
end # class TrueClass
class FalseClass
##
# False is always blank.
#
# false.blank? #=> true
#
# @return [TrueClass]
#
# @api public
def blank?
true
end
end # class FalseClass
class String
##
# Strips out whitespace then tests if the string is empty.
#
# "".blank? #=> true
# " ".blank? #=> true
# " hey ho ".blank? #=> false
#
# @return [TrueClass, FalseClass]
#
# @api public
def blank?
strip.empty?
end
end # class String
|
