+++ /dev/null
-class Object
- # An object is blank if it's false, 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
-
- # An object is present if it's not blank.
- def present?
- !blank?
- end
-end
-
-class NilClass #:nodoc:
- def blank?
- true
- end
-end
-
-class FalseClass #:nodoc:
- def blank?
- true
- end
-end
-
-class TrueClass #:nodoc:
- def blank?
- false
- end
-end
-
-class Array #:nodoc:
- alias_method :blank?, :empty?
-end
-
-class Hash #:nodoc:
- alias_method :blank?, :empty?
-end
-
-class String #:nodoc:
- def blank?
- self !~ /\S/
- end
-end
-
-class Numeric #:nodoc:
- def blank?
- false
- end
-end