Feature #6731 [add new method "Object.present?" as a counter to #empty?]
Basically Object#present? , "An object is present if it?s not #empty?" [2]
or, in other words, "is there any data inside?"
Examples:
>> [].present?
=> false
>> [3].present?
=> true
>> ''.present?
=> false # because it's #empty?
>> 'a'.present?
=> true
>> nil.present?
=> false
Example usage:
button.text=text if text.present? # I only care whether the text actually was set to something, and also don't want to worry about whether it's nil or not.
Thanks.
Basic implementation ([1]):
class Object
def present?
!(respond_to?(:empty?) ? empty? : !self)
end
end
[1] http://stackoverflow.com/a/4649452/32453
[2] http://api.rubyonrails.org/classes/Object.html#method-i-present-3F they also use #blank but that's for a different feature request.