NSIntegerdecodeIntegerForKeyNSString
NSIntegerdecodeIntegerForKeyNSString refers to decoding an NSInteger value from an archived data store using a Keyed Archiver/Unarchiver pattern, where the key is an NSString. NSInteger is a signed integer type defined by the Objective-C runtime, sized to match the platform’s word length (32-bit on 32-bit systems, 64-bit on 64-bit systems). In Apple’s Foundation framework, values are encoded with encodeInteger:forKey: and later decoded with decodeIntegerForKey:. The key parameter is an NSString that identifies the stored value within the archive, and it must match the key used during encoding.
Typically, decoding occurs within a decoding context such as an NSKeyedUnarchiver or a class that inherits
The method is specialized for NSInteger and differs from related primitive decoders like decodeIntForKey: or decodeIntegerForKey:
See also: NSCoder, NSKeyedUnarchiver, encodeInteger:forKey:, decodeObjectForKey:, and the Swift bridging where NSInteger maps to Int. This