Sometimes, there is a need, that before calling a method on an object, we should check, **if the object responds to a method**. we can do the same either way - ob.meth if ob.respond_to?(:meth) or ob.meth rescue NoMethodError Which one is considered as best-practice and why ?
on 2014-02-21 19:14
on 2014-02-21 21:46
On Fri, Feb 21, 2014 at 1:14 PM, Arup Rakshit <email@example.com> wrote: > > Which one is considered as best-practice and why ? It depends on the situation, and there are several other ways. You can override method_missing to not raise an error, you can use try, you can use a null object (which certainly keeps the calling code cleanest), and probably a few others that aren't springing to my mind immediately.... -Dave