Hi! (cc to squeak-dev)
>> All the character is unique so is better (faster) to use #==. > > This is not true for Characters whose code is bigger than 256. > > To me, the identity comparison is more or less in the "meta" level > or touching implementation details. Unless you eally need to check > the "identity" for a good reason, you should always use #= for > comparison, I think. (Some performance critical potion of code could > be exempted... but it should still be limited very carefully.) > > -- Yoshiki Just wanted to mention that this came up on IRC the other day and IMHO one can generally go by this rule - use #= for equality and only use #== if you actually *intend* to check for identity. It is slightly poor style to use #== just to gain a bit of speed, when you in fact *mean* equality. If we generalise the rule is - program by intention as much as possible and instead focus on Compiler and friends for speed tricks. :) It might be interesting to hear what Bryce thinks about this - could for example Exupery get "tricked" by using #== when you actually mean #= and actually end up making slower code than if the developer had used #=? In this particular case it may very well be so that identity checks are faster than any conceivable equality check - but who knows. :) regards, Göran PS. Sure, I have also broken this rule, no doubt about that. ;) _______________________________________________ Beginners mailing list Beginners@lists.squeakfoundation.org http://lists.squeakfoundation.org/mailman/listinfo/beginners
