nsnumber
Why does my program crash when given negative values?
Alright, I am very confused, so I hope you friends can help me out.I\'m working on a project using Cocos2D, the most recent version (.99 RC 1).I make some player objects and some buttons to change the[详细]
2022-12-23 08:29 分类：问答Cocoa Touch. Why does NSNumber return a difference value for intValue and floatValue?
Ok, this makes absolutely no sense: I creat an NSNumber: NSNumber *n = [NSNumber numberWithInt:37669178];[详细]
2022-12-23 00:40 分类：问答How to read crash log? How to find why the app crashes in system library? What means EXC_CRASH (SIGABRT)?
I got an crash logs from a customer to figure why my app crash on her iPhone. Here some info from crash log:[详细]
2022-12-21 14:01 分类：问答Type casting for Core Data attribute setting
I am trying to set a Core Data attribute but am getting incompatible type errors. I have a float attribute i开发者_JAVA技巧n a Core Data entity on iPhone 3.0. Core Data auto-generates an interface for[详细]
2022-12-20 00:44 分类：问答NSNumber numberWithInt: returns strange numbers?
I am just starting out with Core Data and ran into an issue where I need to save the new object with the appropriate ID.[详细]
2022-12-17 17:41 分类：问答Trying to NSLog an NSNumber ivar in an instance method
I\'m working on a console app that is tracks different songs. I\'m working on getting the song class up off the ground first and have run into a snag trying to log an nsnumber which has been allocated[详细]
2022-12-16 05:48 分类：问答Best way to handle persistent Boolean in plist?
What\'s the best way to handle Boolean values that derive from a UISwitch setting, and are stored in an NSMutableDictionary that is saved to the user\'s directory as persistent settings? Specifically,[详细]
2022-12-15 15:26 分类：问答NSArray of UIBarButtonItem Tag (i.e. NSInteger)
Is it true that you can\'t have an NSMutableArray of NSIntegers? When I try to add the values to the array and then print them out they\'re huge numbers (when if I print out the tag to NSLog th开发者_[详细]
2022-12-15 12:29 分类：问答Retrieve NSNumber From Array
I am relatively new to Objective C and need some array help. I have a plist which contains a Dictionary and an NSNumber Array, with more arrays to[详细]
2022-12-15 08:20 分类：问答Cast as an NSNumber doubleValue adding extra [phantom] precision
iPhone sdk 3.2.1 NSMutableDictionary *myDict = [NSMutableDictionary dictionaryWithCapacity:2]; [myDict setObject:[NSNumber numberWithDouble:0.1f] forKey:@\"testDoubleObject\"];[详细]
2022-12-13 17:55 分类：问答
![Interactive visualization of a graph in python [closed]](https://www.devze.com/res/2023/04-10/09/92d32fe8c0d22fb96bd6f6e8b7d1f457.gif)
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