2014/10/15 下午 10:08:30
iphone Programming Glossary: evaluatesalways returns “en_US” not user's current language http://stackoverflow.com/questions/1522210/always-returns-en-us-not-users-current-language going nuts because no matter what the language preference on the iPhone simulator or actual hardware are locale always evaluates to en_US NSString locale NSLocale currentLocale localeIdentifier NSLog @ current locale @ locale The crazy thing is that..
http://stackoverflow.com/questions/2521275/what-is-nsparameterassert early hopefully during debugging and basic testing. NSParameterAssert can be used to test that any expression evaluates to true however so you can use it like this as well NSParameterAssert index 0 ensure no negative index is supplied Apple's..
iPhone inputting NSUserDefaults into a UITextField http://stackoverflow.com/questions/2815194/iphone-inputting-nsuserdefaults-into-a-uitextfield NSString stringWithFormat @ @ placeHolderName In code you have now you accidentally use Comma operator that evaluates its first expression txtName.text @ @ discards the result and returns the 2nd placeHolderName share improve this answer..
if (self = [super init]) vs. if ((self = [super init])) http://stackoverflow.com/questions/3059232/if-self-super-init-vs-if-self-super-init objective c class initialization share improve this question They both do the same thing. The thing that the if evaluates is the value of the expression inside it which is the assigned value in an assignment. So when self is not nil you proceed..
Quick Explanation of SUBQUERY in NSPredicate Expression http://stackoverflow.com/questions/3810992/quick-explanation-of-subquery-in-nspredicate-expression Bs x x IN @ Thanks iphone cocoa cocoa touch nspredicate share improve this question This is what a subquery evaluates to. Found from this mailing list thread the #1 hit for 鑥SPredicate subquery in Google. That bit of documentation also explains..
iPhone: Tracking/Identifying individual touches http://stackoverflow.com/questions/913086/iphone-tracking-identifying-individual-touches
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