Not to advocate one may or the other but github.com/bnorton/tap_if On Friday, January 25, 2013 1:17:49 PM UTC-8, Ngan wrote: > I originally brought this up in: https://github.com/rails/rails/issues/9067 > > > > Rails paved the way for Object#tap and Object#try...I'd like to propose > Object#tap_if and its counterpart,Object#tap_unless. > I've been following 37signals conventions of tapping variables in the > views:<% account.owner.tap do |user| %> > ... > <% end %> > > But, I find myself having to do this a lot...<% account.owner.tap do |user| %> > <% if user %> > ... > <% end %> > <% end %> > > It would be great if we could do...<% account.owner.tap_if(:present?) do > |user| %> > ... > <% end %> > > <% account.users.tap_if(:any?) do |user| %> > ... > <% end %> > > The block would only yield if the method evals to true. > Carlos mentioned that you can add an "if account.owner.present?" at the end... > > But there are times when the account.owner (or something else) call is > expensive and you don't want to call it twice. > > > Any feedback would be much appreciated. Thanks!
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