2010/1/12 Jeff <[email protected]> > On Jan 12, 12:12 am, Yehuda Katz <[email protected]> wrote: > > 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. > > Thanks for the explanation, Yehuda. Sounds logical. > > Jeff >
FYI, other projects like Rack, Clearance also use the same coding style. It is good to see community following one set of guidelines. It just lowers the barrier to entry for a new developer from a different community and keeps the open source code kind of organised. Anuj > > > 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/8cb594a2e1808cd7d93f3593afed0414. > .. > > > > > 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]><rubyonrails-core%2Bunsubscrib > [email protected]> > > > . > > > For more options, visit this group at > > >http://groups.google.com/group/rubyonrails-core?hl=en. > > -- > 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. > > > > -- Anuj DUTTA--
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