Is NSFileManager thread safe?

Instances ofNSFileManager are considered thread-safe when created using [[NSFileManager alloc] init]. This means that if your application ends up using the NSFileManager singleton from more than one thread you may get some unexpected results or even end up with corrupted files in your file system.

What is NSSearchPathForDirectoriesInDomains?

NSSearchPathForDirectoriesInDomains(_:_:_:) Creates a list of directory search paths.

What is Objective C used for?

Objective-C is the primary programming language you use when writing software for OS X and iOS. It’s a superset of the C programming language and provides object-oriented capabilities and a dynamic runtime.

How do you write Objective C?

Objective-C uses the same phraseology as the C language. Like in C, each line of Objective-C code must end with a semicolon. Blocks of code are written within a set of curly brackets. All basic types are the same, such as int, float, double, long and more.

What is the purpose of the NSFileHandle method?

Most creation methods for NSFileHandle cause the file handle object to take ownership of the associated file descriptor. This means that the file handle object both creates the file descriptor and is responsible for closing it later, usually when the system deallocates the file handle object.

What are the nsnsfilehandle notifications?

NSFileHandle posts several notifications related to asynchronous background I/O operations. They are set to post when the run loop of the thread that started the asynchronous operation is idle.

What is a file handle object?

An object-oriented wrapper for a file descriptor. You use file handle objects to access data associated with files, sockets, pipes, and devices. For files, you can read, write, and seek within the file. For sockets, pipes, and devices, you can use a file handle object to monitor the device and process data asynchronously.