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Versions: 12
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Contents
class Object
# @return <TrueClass, FalseClass>
#
# @example [].blank? #=> true
# @example [1].blank? #=> false
# @example [nil].blank? #=> false
#
# Returns true if the object is nil or empty (if applicable)
def blank?
nil? || (respond_to?(:empty?) && empty?)
end
end # class Object
class Numeric
# @return <TrueClass, FalseClass>
#
# Numerics can't be blank
def blank?
false
end
end # class Numeric
class NilClass
# @return <TrueClass, FalseClass>
#
# Nils are always blank
def blank?
true
end
end # class NilClass
class TrueClass
# @return <TrueClass, FalseClass>
#
# True is not blank.
def blank?
false
end
end # class TrueClass
class FalseClass
# False is always blank.
def blank?
true
end
end # class FalseClass
class String
# @example "".blank? #=> true
# @example " ".blank? #=> true
# @example " hey ho ".blank? #=> false
#
# @return <TrueClass, FalseClass>
#
# Strips out whitespace then tests if the string is empty.
def blank?
strip.empty?
end
end # class String
Version data entries
12 entries across 12 versions & 3 rubygems