We use @_ivars in cases where an instance variable is to be used internally in a module that will be mixed into a user's class or a class that will be inherited by a user's class.
For instance, we use @_ivars in ActionController::Base and modules mixed into ActionController::Base. Yehuda Katz Developer | Engine Yard (ph) 718.877.1325 On Mon, Jan 11, 2010 at 9:46 PM, Jeff <[email protected]> wrote: > Hi, > > I've noticed that some of the commits to rails edge lately are using a > style where instance variables of a class start with a leading > underscore. > > Like in this commit: > http://github.com/rails/rails/commit/8cb594a2e1808cd7d93f3593afed0414016fc56f > > I see this variable: > > @_env > > I'm guessing it's to avoid naming conflicts when the module is > included in a class? I don't recall seeing this style in other Ruby > libraries (it harkens back to my C++ days), so I'm just wondering if > there's a particular purpose behind it; and whether people who look to > contribute code should be adopting this style, and in what situations. > > Thanks, > Jeff > > -- > You received this message because you are subscribed to the Google Groups > "Ruby on Rails: Core" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]<rubyonrails-core%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/rubyonrails-core?hl=en. > > > >--
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