我不得不把一架NSString打入一架NSMutable Array。 然后,我可以使用一名国家安全局的描述者,按其测地长度来分类。 然后,我可以就从最长开始的某些字句进行方法。
这就是我的问题所在。 我现在需要恢复阵列的原有次序,以便我能够把阵列重新编成经过编辑的座标。
我不得不把一架NSString打入一架NSMutable Array。 然后,我可以使用一名国家安全局的描述者,按其测地长度来分类。 然后,我可以就从最长开始的某些字句进行方法。
这就是我的问题所在。 我现在需要恢复阵列的原有次序,以便我能够把阵列重新编成经过编辑的座标。
我的回答基本上像Steve s一样,但我是这样做的——保持原来的阵列,通过你处理时的分类复制件,然后将其丢弃。 因此,例如:
NSArray *yourOriginalArray = ...whatever...;
// do processing
for(id object in [yourOriginalArray sortedArrayUsing<whatever means>])
{
// if you re doing processing that doesn t change the identity of
// the object then there s no need to worry about this, but supposing
// you want to adjust the identity (eg, the source array is full of
// immutable objects and you want to replace them) then...
NSUInteger originalIndex = [yourOriginalArray indexOfObject:object];
id replacementObject = [self mutatedFormOf:object];
[yourOriginalArray replaceObjectAtIndex:originalIndex
withObject:replacementObject];
// of course, this is only if yourOriginalArray is mutable
}
国家安全局没有掌握任何关于它以前国家的情况,只是它目前的状况。 解决办法可能更多,但你可以做的一件事是再制造一阵,储存原状。
For a basic app with nonconsumable in-app purchases, has anyone figured out best practices for using SKPaymentQueue s restoreCompletedTransactions? Observations I know it s recommended to always ...
I am trying to list the contents of Ringtones directory in a TableView, however, I am only getting the last file in the directory in ALL cells, instead of file per cell. This is my code: - (...
I have a UITextField that is a subview of a UITableViewCell. When my view loads, I want the text field to become first responder. I have a pointer to the text field in the table cell, so to do this I ...
I ve been working on adding in-app purchases and was able to create and test in-app purchases using Store Kit (yay!). During testing, I exercised my app in a way which caused the app to crash mid ...
In my app i have a bunch of data i store in the NSUserdefaults. This information consists of an NSObject (Object1) with NSStrings and NSNumbers and also 2 instances of yet another object (Object2). ...
Basically I m downloading images off of a webserver and then caching them to the disk, but before I do so I want to mask them. I m using the masking code everyone seems to point at which can be found ...
I m using this code to resize an image on the iPhone: CGRect screenRect = CGRectMake(0, 0, 320.0, 480.0); UIGraphicsBeginImageContext(screenRect.size); [value drawInRect:screenRect blendMode:...
Is there a simple way of allowing interaction with a button in a UIView that lies under another UIView - where there are no actual objects from the top UIView on top of the button? For instance, ...