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NSOperation vs Grand Central Dispatch
I'm learning about concurrent programming for iOS. So far I've read about NSOperation/NSOperationQueue and GCD . What are the reasons for using NSOperationQueue over GCD and vice versa?
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How to retrieve form values from HTTPPOST, dictionary or?
...r will just leave them at default, usually NULL. The nice thing is you can mix and match various models on the Mark-up and the post back parse will populate as much as possible. You do not need to define a model on the page or use any helpers.
TIP: The name of the parameter in the controller is...
Rename a file using Java
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Copied from http://exampledepot.8waytrips.com/egs/java.io/RenameFile.html
// File (or directory) with old name
File file = new File("oldname");
// File (or directory) with new name
File file2 = new File("newname");
if (file2.exists())
throw new java.io.IOException("file exi...
App Inventor 2 试验组件 · App Inventor 2 中文网
...tBot 是一个不可见组件，用于与 AI 聊天的聊天机器人。此版本使用 MIT 运行的代理，该代理又使用 ChatGPT 生成大语言模型。
注：此组件对AI伴侣要求最低版本为v2.67 (旧版本请扫码升级：帮助 -> AI伴侣信息)，编译为apk则不受限制...
Explain the use of a bit vector for determining if all characters are unique
...er to make this program run for only lower case characters. However if you mix lower and upper case characters then it would not work.
By the way, if you do not subtract 'a' from each character (see below statement) then this program will work correctly for only String with upper case characters or...
Rename a file in C#
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Take a look at System.IO.File.Move, "move" the file to a new name.
System.IO.File.Move("oldfilename", "newfilename");
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Differences between strong and weak in Objective-C
I'm new to Obj-C, so my first question is:
9 Answers
9
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Delete/Reset all entries in Core Data?
...nd safe, and can certainly be done programatically at runtime.
Update for iOS5+
With the introduction of external binary storage (allowsExternalBinaryDataStorage or Store in External Record File) in iOS 5 and OS X 10.7, simply deleting files pointed by storeURLs is not enough. You'll leave the ext...
Where does the iPhone Simulator store its data?
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For Xcode6+/iOS8+
~/Library/Developer/CoreSimulator/Devices/[DeviceID]/data/Containers/Data/Application/[AppID]/
Accepted answer is correct for SDK 3.2 - SDK 4 replaces the /User folder in that path with a number for each of the legacy...
What is `mt=8` in iTunes links for the App Store?
...umber of different Media Types (mt values):
1 Music
2 Podcasts
3 Audiobooks
4 TV Shows
5 Music Videos
6 Movies
7 iPod Games
8 Mobile Software Applications
9 Ringtones
10 iTunes U
11 E-Books
12 Desktop Apps
So, to answer your question, the "mt=8" in iTunes links simply identif...