Sha256: 25067371a9c5431f7c58341ab04045f7ae0a80f1f3cd5eb78296079c25ba749f
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Size: 816 Bytes
Versions: 17
Compression:
Stored size: 816 Bytes
Contents
# = Blank
#
# Core extension method #blank? added to core clesses.
#
module Kernel
# An object is blank if it's nil, empty, or a whitespace string.
# For example, "", " ", nil, [], and {} are blank.
#
# This simplifies
# if !address.nil? && !address.empty?
# to
# if !address.blank?
def blank?
respond_to?(:empty?) ? empty? : !self
end
end
class NilClass
def blank?
true
end
end
class FalseClass
def blank?
true
end
end
class TrueClass
def blank?
false
end
end
class Array
alias_method :blank?, :empty?
end
class Hash
alias_method :blank?, :empty?
end
class String
# Is this string just whitespace?
#
# "abc".blank? #=> false
# " ".blank? #=> true
def blank?
self !~ /\S/
end
end
class Numeric
def blank?
false
end
end
Version data entries
17 entries across 17 versions & 2 rubygems