On Jun 1, 2015, at 11:43 PM, Britt Durbrow <bdurb...@rattlesnakehillsoftworks.com> wrote: > > Although I have the luxury of requiring modern runtime capable systems, some > people do still have to target the old runtime…
ARC requires the modern runtime, which has pretty much caused the old one to drop off the map for most people, I think. > Also, FWIW the modern runtime only handles same-named instance variables that > are privately declared; same-named variables declared in an @interface > section will conflict even on the modern runtime. Variables declared in an @interface section trigger a compiler warning: warning: declaration of instance variables in the interface is deprecated [-Wobjc-interface-ivars] > Oh, and there’s a nifty warning that’s thrown as soon as you try to declare a > local variable of the same name as an instance variable. That doesn’t help if I’m looking at some code that someone else wrote, or code that I wrote 5 years ago, noticing a variable name being used somewhere, and having to hunt around for the declaration to figure out whether it’s a local variable, an instance variable, or something stupid like a global or something. >> On Jun 1, 2015, at 3:14 PM, Charles Srstka <cocoa...@charlessoft.com >> <mailto:cocoa...@charlessoft.com>> wrote: > >> >> Non-underscored ivars vs. local variables, however, are not obvious at all, >> especially if the method is large. > > In modern versions of Xcode at least, if I don’t know exactly what I’m > looking at, the answer is just a command-click away… :-) That can be handy, when it works. Sometimes it doesn’t (particularly when you’re using Swift, in which command-click usually just brings up an endless circular progress indicator). > Also, the syntax highlighting does render (at least on my setup) in different > colors for local variables and instance variables. That can be handy, if you’re not colorblind. If you are, the coloring isn’t much help. Charles _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
