Hi, You should take a look at this article:
http://c2.com/cgi/wiki?SingletonsAreEvil Cheers Dave On 8 Jun 2014, at 17:30, William Squires <wsqui...@satx.rr.com> wrote: > Okay, I have several classes in my (somewhat large, and growing) project > that implement the singleton pattern via a [<classname> shared<whatever>] > class method (and a file-scope static reference) that uses lazy loading to > instantiate the singleton the first time a reference is asked for. Is it > considered better to put all of these calls in the main() function before any > other code executes, or not worry about it, and just access them through the > above class methods when and where needed? > Also, in C, it's common to throw away the return value from a function (a la > printf(), which returns an int, but coders rarely use the return value), but > is it good practice to throw away the result of the above method calls > (messages) just to silence the compiler? > > i.e. > > -(void)someMethod > { > ... > [MyClass sharedController]; // No warning here. > ... > } > > as opposed to: > > -(void)someMethod > { > MyClass *p = [MyClass sharedController]; // <- Yellow triangle here for > unused variable 'p' > ... > } > > TIA! :) > > > _______________________________________________ > > 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/dave%40looktowindward.com > > This email sent to d...@looktowindward.com _______________________________________________ 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
