I\'m having a 开发者_开发问答hard time understanding copyWithZone. I know it\'s supposed to return a copy, but if I add an object to a dictionary, it adds a \'copyWithZone\' object to the dictionary.
I read in the apple documentation about copyWithZone : \"The returned object is implicitly retained by the sender, who is responsible for releasing it\".
I can set UIColor objects as keys in an NSMuta开发者_JAVA百科bleDictionary all day long and everything is fine and happy...
How to copy one NSString to another? @interface MyData : NSObject { @private //user\'s private info NSInteger uID;
Testing my app on the device it returns a leakwhe i call the copy of a custom object ande i can\'t understand why.
I have a Class that I need to copy with the ability to make changes the value of a variable on both Classes. Simply put these classes need to remain clones of each other at all times. My understanding
Input: A 2-dimensional array NxN - Matrix - with positive and negative el开发者_高级运维ements.Output: A submatrix of any size such that its summation is the maximum among all possible submatrices.
是的。当闹钟用作名词时，它的意思是“闹钟；报警、警示装置；恐慌”。作为及物动词，表示“警告”；制造恐慌”。一般来说，“闹钟”用来表示闹钟。摆弄桌子；重置时钟；机器报警的意义。
I have an MFC application which I am trying to package for deployment. It seems to depend on the files \'msvcr90.dll\', \'msvcp90.dll\' and \'mfc90.dll\'. What is the correct way to distribute these f
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