Property list types and their various representations

iOS下Property list能够存储的数据类型

Property list types and their various representations
Abstract type	XML element	Cocoa class	Core Foundation type
array	`<array>`	`NSArray`	`CFArray` (`CFArrayRef`)
dictionary	`<dict>`	`NSDictionary`	`CFDictionary` (`CFDictionaryRef`)
string	`<string>`	`NSString`	`CFString` (`CFStringRef`)
data	`<data>`	`NSData`	`CFData` (`CFDataRef`)
date	`<date>`	`NSDate`	`CFDate` (`CFDateRef`)
number - integer	`<integer>`	`NSNumber` (`intValue`)	`CFNumber` (`CFNumberRef`, integer value)
number - floating point	`<real>`	`NSNumber` (`floatValue`)	`CFNumber` (`CFNumberRef`, floating-point value)
Boolean	`<true/>` or `<false/>`	`NSNumber` (`boolValue` == `YES` or `boolValue` == `NO`)	`CFBoolean` (`CFBooleanRef` ; `kCFBooleanTrue` or `kCFBooleanFalse`)

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