Jakub Godawa wrote in post #957822: > There is a abstraction level difference between those methods.
Not in this case. Rails' methods here are *supplements* to Ruby's methods, not abstractions IMHO. > > using [].empty? or [].any? would do a Ruby call. It means that you are > directly asking Ruby interpreter for a answer. That would perform > better on a bigger scale. > > using [].blank? or [].present? (respectively) would do a Ruby call > through Rails's method. RoR implements it by using the Ruby empty? > method. > > Which of them would be more stable? > empty? and any? are faster but doesn't work (throw error) with all > instances of Object class. > present? is calling the blank? method, and blank? is calling the > empty? method, but never throws an error (as empty? would do for some > objects) > > # File activesupport/lib/active_support/core_ext/object/blank.rb, line > 12 > def blank? > respond_to?(:empty?) ? empty? : !self > end > > I recommand using RoR methods in RoR apps. Why? If Rails provides useful magic, use it, but don't use it just because it comes from Rails. (For the record, I love blank?.) > > Cheers! > > ps. all checked for Rails 3.0.0 and Ruby 1.9.2 Best, -- Marnen Laibow-Koser http://www.marnen.org [email protected] -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
