This is a little odd to me, but when I perform basic division on a float I get inaccurate approximations. This isn\'t a huge开发者_如何学JAVA deal because I can truncate the number, but I\'m just curi
A seemingl开发者_如何学运维y simple question: Can I have some sort of Number object, which can be nil but which I can assign like a primitive int:
I\'m pretty new to Objective-C. I\'ve read through a similar question but I can\'t figure out how to solve my problem with that information.
[measureValue stringVal开发者_运维知识库ue] gives me this exception: Terminating app due to uncaught exception \'NSInvalidArgumentException\', reason: \'-[NSCFString stringValue]: unrecognized selec
How do I detect if a NSNumber is NULL? For example, I use a开发者_运维百科 NSLog to display the value of a NSNumber and if there is an incorrect value, such as letters, it shows \"null\" in the log. T
I have the following predicate that works fine with numbers such as 555 and 623 (3 digit numbers) The problem is, I have numbers such as 005 and 009 etc (1 digit with two 0 before).
May i know how to round up a NSNumber in object C ? for(int i=6; i>=0; i--) { DayOfDrinks *drinksOnDay = [appDelegate.drinksOnDayArray objectAtIndex:i];
I have a NSMutableArray of NSNumbers. Basically I just want to check if开发者_运维技巧 any of the NSNumbers in the array = some value.
Can someone show me how to retrieve values by looping through a NSMutableArray? My code, which basically adds integer numbers to the array, is below :
I\'m still very much a noob, having a lot of fun learning the basics of Objective-C, using XCode to put together some simple programs for OS-X.