/* NSUserDefaults.h
Copyright (c) 1994-2019, Apple Inc. All rights reserved.
*/
#import <Foundation/NSObject.h>
#import <Foundation/NSNotification.h>
@class NSArray, NSData, NSDictionary<KeyValue, ObjectValue>, NSMutableDictionary, NSString, NSURL;
NS_ASSUME_NONNULL_BEGIN
/// NSGlobalDomain identifies a domain shared between all applications for a given user. NSGlobalDomain is automatically included in all search lists, after the entries for the search list's domain.
NSGlobalDomain定义了一个为指定用户的所有应用程序间共享的区域。NSGlobalDomain自动包含在全部的search lists，在search lists区域对象之后。
FOUNDATION_EXPORT NSString * const NSGlobalDomain;
/// NSArgumentDomain identifies a search list entry containing the commandline arguments the application was launched with, if any. Arguments must be formatted as '-key plistvalue'. NSArgumentDomain is automatically included in all search lists, after forced defaults, but before all other entries. This can be useful for testing purposes.
NSArgumentDomain定义了一个search list对象，若有，包含了程序启动时携带的命令行参数。参数必须以'-key plistvalue'的格式。NSArgumentDomain自动包含在所有的search lists，在forced defaults之后，但在其他所有对象之前。这个可以用来测试。
FOUNDATION_EXPORT NSString * const NSArgumentDomain;
/// NSRegistrationDomain identifies a search list entry containing all defaults set with -registerDefaults:, if any. NSRegistrationDomain is automatically included as the final entry of all search lists.
FOUNDATION_EXPORT NSString * const NSRegistrationDomain;
NSRegistrationDomain定义了一个search list对象，若有，包含了所有用 -registerDefaults:设置的默认设置。NSRegistrationDomain自动包含在所有search lists末尾。
/*!
NSUserDefaults is a hierarchical persistent interprocess (optionally distributed) key-value store, optimized for storing user settings.
NSUserDefaults是一种层级持久进程间（随意分布时）键值存储，对用户设置存储优化。
Hierarchical: NSUserDefaults has a list of places to look for data called the "search list". A search list is referred to by an arbitrary string called the "suite identifier" or "domain identifier". When queried, NSUserDefaults checks each entry of its search list until it finds one that contains the key in question, or has searched the whole list. The list is (note: "current host + current user" preferences are unimplemented on iOS, watchOS, and tvOS, and "any user" preferences are not generally useful for applications on those operating systems):
层级：NSUserDefaults有查找名为"search list"的列表。一个search list通过一个名为"suite identifier"或者"domain identifier"的任意字符串指向。有必要的时候，NSUserDefaults检查它每个入口下的search list，直到找到包含键的对象，或者查完了全部的list。list（"current host + current user"偏好设置没有在iOS，watchOS, 和 tvOS上实现，"any user"偏好设置对在这些运行系统上的应用程序一般没用）：
- Managed ("forced") preferences, set by a configuration profile or via mcx from a network administrator
-管理("forced")偏好设置，通过配置文件或者通过一个网络上的管理员的MCX
- Commandline arguments
-命令行参数
- Preferences for the current domain, in the cloud
-当前区域的偏好设置，在云上
- Preferences for the current domain, the current user, in the current host
-当前主机当前用户当前区域的偏好设置
- Preferences for the current domain, the current user, in any host
-所有主机当前用户当前区域的偏好设置
- Preferences added via -addSuiteNamed:
-通过-addSuiteNamed:添加的偏好设置
- Preferences global to all apps for the current user, in the current host
-对当前主机当前用户所有APP的偏好设置
- Preferences global to all apps for the current user, in any host
-任何主机当前用户所有APP的偏好设置
- Preferences for the current domain, for all users, in the current host
-当前主机所有用户当前区域的偏好设置
- Preferences global to all apps for all users, in the current host
-当前主机所有用户所有APP的偏好设置
- Preferences registered with -registerDefaults:
-通过-registerDefaults:注册的偏好设置
Persistent: Preferences stored in NSUserDefaults persist across reboots and relaunches of apps unless otherwise specified.
持久性：存储在NSUserDefaults的偏好设置在重启手机和重启APP后持续存在，除非另做说明
Interprocess: Preferences may be accessible to and modified from multiple processes simultaneously (for example between an application and an extension).
进程间：偏好设置可能在多进程间同时获取或者修改（例如在应用程序和扩展之间）。
Optionally distributed (Currently only supported in Shared iPad for Students mode): Data stored in user defaults can be made "ubiqitous", i.e. synchronized between devices via the cloud. Ubiquitous user defaults are automatically propagated to all devices logged into the same iCloud account. When reading defaults (via -*ForKey: methods on NSUserDefaults), ubiquitous defaults are searched before local defaults. All operations on ubiquitous defaults are asynchronous, so registered defaults may be returned in place of ubiquitous defaults if downloading from iCloud hasn't finished. Ubiquitous defaults are specified in the Defaults Configuration File for an application.
任意分布：
Key-Value Store: NSUserDefaults stores Property List objects (NSString, NSData, NSNumber, NSDate, NSArray, and NSDictionary) identified by NSString keys, similar to an NSMutableDictionary.
键值存储：NSUserDefaults存储通过NSString键定义的Property List objects(NSString, NSData, NSNumber, NSDate, NSArray, and NSDictionary)，类似于NSMutableDictionary。
Optimized for storing user settings: NSUserDefaults is intended for relatively small amounts of data, queried very frequently, and modified occasionally. Using it in other ways may be slow or use more memory than solutions more suited to those uses.
为存储用户设置优化：NSUserDefaults用于相对小量的数据，查询频繁，偶尔修改。在其他方式中使用他可能比适用这些方式的方案缓慢或者使用更多内存。
The 'App' CFPreferences functions in CoreFoundation act on the same search lists that NSUserDefaults does.
CoreFoundation中CFPreferences函数和NSUserDefaults在search lists表现上一样。
NSUserDefaults can be observed using Key-Value Observing for any key stored in it. Using NSKeyValueObservingOptionPrior to observe changes from other processes or devices will behave as though NSKeyValueObservingOptionPrior was not specified.
NSUserDefaults可以用kvo观察存储的key。使用NSKeyValueObservingOptionPrior来观察其他进程或者设备产生的改变，会和没有指定NSKeyValueObservingOptionPrior表现的一样。
*/
@interface NSUserDefaults : NSObject {
@private
id _kvo_;
CFStringRef _identifier_;
CFStringRef _container_;
void *_reserved[2];
}
/*!
+standardUserDefaults returns a global instance of NSUserDefaults configured to search the current application's search list.
standardUserDefaults返回一个全局NSUserDefaults对象，搜索当前应用程序的search list.
*/
@property (class, readonly, strong) NSUserDefaults *standardUserDefaults;
/// +resetStandardUserDefaults releases the standardUserDefaults and sets it to nil. A new standardUserDefaults will be created the next time it's accessed. The only visible effect this has is that all KVO observers of the previous standardUserDefaults will no longer be observing it.
resetStandardUserDefaults释放standardUserDefaults并且将它设置为nil。在下次获取standardUserDefaults时，会创建一个新的。这个操作唯一的可见效果是之前standardUserDefaults的所有的kvo观察不再观察他。
+ (void)resetStandardUserDefaults;
/// -init is equivalent to -initWithSuiteName:nil
-init效果和 -initWithSuiteName:nil一样
- (instancetype)init;
/// -initWithSuiteName: initializes an instance of NSUserDefaults that searches the shared preferences search list for the domain 'suitename'. For example, using the identifier of an application group will cause the receiver to search the preferences for that group. Passing the current application's bundle identifier, NSGlobalDomain, or the corresponding CFPreferences constants is an error. Passing nil will search the default search list.
-initWithSuiteName:初始化一个 NSUserDefaults对象，查找'suitename'区域共享偏好search list。例如，使用application group的id会使调用者搜索group的偏好设置。传递当前应用的bundle identifier，NSGlobalDomain或者对应的CFPreferences常量是错误的。传nil将会查找默认search list。
- (nullable instancetype)initWithSuiteName:(nullable NSString *)suitename API_AVAILABLE(macos(10.9), ios(7.0), watchos(2.0), tvos(9.0)) NS_DESIGNATED_INITIALIZER;
/// -initWithUser: is equivalent to -init
-init效果和 -initWithUser：一样
- (nullable id)initWithUser:(NSString *)username API_DEPRECATED("Use -init instead", macos(10.0,10.9), ios(2.0,7.0), watchos(2.0,2.0), tvos(9.0,9.0));
/*!
-objectForKey: will search the receiver's search list for a default with the key 'defaultName' and return it. If another process has changed defaults in the search list, NSUserDefaults will automatically update to the latest values. If the key in question has been marked as ubiquitous via a Defaults Configuration File, the latest value may not be immediately available, and the registered value will be returned instead.
*/
-objectForKey:将会在调用者 search list下查找'defaultName'键对应的预设值并返回这个值。如果另外一个进程改变了这个search list的预设值，NSUserDefaults会自动更新到最新的值。如果查找的key通过Defaults Configuration File被标记为了无所不在，最新的值可能不会立即获取到，会返回已注册的值。
- (nullable id)objectForKey:(NSString *)defaultName;
/*!
-setObject:forKey: immediately stores a value (or removes the value if nil is passed as the value) for the provided key in the search list entry for the receiver's suite name in the current user and any host, then asynchronously stores the value persistently, where it is made available to other processes.
-setObject:forKey:在当前用户所有主机下的调用者的suite name下的search list立即为提供的key存储新的值，然后异步持久的存储该值，其他的进程可以获取的到。
*/
- (void)setObject:(nullable id)value forKey:(NSString *)defaultName;
/// -removeObjectForKey: is equivalent to -[... setObject:nil forKey:defaultName]
-removeObjectForKey:和[... setObject:nil forKey:defaultName]一样
- (void)removeObjectForKey:(NSString *)defaultName;
/// -stringForKey: is equivalent to -objectForKey:, except that it will convert NSNumber values to their NSString representation. If a non-string non-number value is found, nil will be returned.
-stringForKey:和 -objectForKey:一样，除了会将NSNumber值转换为NSString的表示。如果找到一个非string非number值，会返回nil。
- (nullable NSString *)stringForKey:(NSString *)defaultName;
/// -arrayForKey: is equivalent to -objectForKey:, except that it will return nil if the value is not an NSArray.
- (nullable NSArray *)arrayForKey:(NSString *)defaultName;
/// -dictionaryForKey: is equivalent to -objectForKey:, except that it will return nil if the value is not an NSDictionary.
- (nullable NSDictionary<NSString *, id> *)dictionaryForKey:(NSString *)defaultName;
/// -dataForKey: is equivalent to -objectForKey:, except that it will return nil if the value is not an NSData.
- (nullable NSData *)dataForKey:(NSString *)defaultName;
/// -stringForKey: is equivalent to -objectForKey:, except that it will return nil if the value is not an NSArray<NSString *>. Note that unlike -stringForKey:, NSNumbers are not converted to NSStrings.
- (nullable NSArray<NSString *> *)stringArrayForKey:(NSString *)defaultName;
/*!
-integerForKey: is equivalent to -objectForKey:, except that it converts the returned value to an NSInteger. If the value is an NSNumber, the result of -integerValue will be returned. If the value is an NSString, it will be converted to NSInteger if possible. If the value is a boolean, it will be converted to either 1 for YES or 0 for NO. If the value is absent or can't be converted to an integer, 0 will be returned.
*/
- (NSInteger)integerForKey:(NSString *)defaultName;
/// -floatForKey: is similar to -integerForKey:, except that it returns a float, and boolean values will not be converted.
- (float)floatForKey:(NSString *)defaultName;
/// -doubleForKey: is similar to -integerForKey:, except that it returns a double, and boolean values will not be converted.
- (double)doubleForKey:(NSString *)defaultName;
/*!
-boolForKey: is equivalent to -objectForKey:, except that it converts the returned value to a BOOL. If the value is an NSNumber, NO will be returned if the value is 0, YES otherwise. If the value is an NSString, values of "YES" or "1" will return YES, and values of "NO", "0", or any other string will return NO. If the value is absent or can't be converted to a BOOL, NO will be returned.
*/
- (BOOL)boolForKey:(NSString *)defaultName;
/*!
-URLForKey: is equivalent to -objectForKey: except that it converts the returned value to an NSURL. If the value is an NSString path, then it will construct a file URL to that path. If the value is an archived URL from -setURL:forKey: it will be unarchived. If the value is absent or can't be converted to an NSURL, nil will be returned.
*/
- (nullable NSURL *)URLForKey:(NSString *)defaultName API_AVAILABLE(macos(10.6), ios(4.0), watchos(2.0), tvos(9.0));
/// -setInteger:forKey: is equivalent to -setObject:forKey: except that the value is converted from an NSInteger to an NSNumber.
- (void)setInteger:(NSInteger)value forKey:(NSString *)defaultName;
/// -setFloat:forKey: is equivalent to -setObject:forKey: except that the value is converted from a float to an NSNumber.
- (void)setFloat:(float)value forKey:(NSString *)defaultName;
/// -setDouble:forKey: is equivalent to -setObject:forKey: except that the value is converted from a double to an NSNumber.
- (void)setDouble:(double)value forKey:(NSString *)defaultName;
/// -setBool:forKey: is equivalent to -setObject:forKey: except that the value is converted from a BOOL to an NSNumber.
- (void)setBool:(BOOL)value forKey:(NSString *)defaultName;
/// -setURL:forKey is equivalent to -setObject:forKey: except that the value is archived to an NSData. Use -URLForKey: to retrieve values set this way.
- (void)setURL:(nullable NSURL *)url forKey:(NSString *)defaultName API_AVAILABLE(macos(10.6), ios(4.0), watchos(2.0), tvos(9.0));
/*!
-registerDefaults: adds the registrationDictionary to the last item in every search list. This means that after NSUserDefaults has looked for a value in every other valid location, it will look in registered defaults, making them useful as a "fallback" value. Registered defaults are never stored between runs of an application, and are visible only to the application that registers them.
Default values from Defaults Configuration Files will automatically be registered.
-registerDefaults:将 registrationDictionary添加到每个search list的最后对象。意味着NSUserDefaults在每个有效区域查找值后，才会查找registered defaults，将它用作应急值。Registered defaults永远都不会存储在一个程序运行之间，并且只对注册他们的应用可见。
Defaults Configuration中的预定义值会自动注册。
*/
- (void)registerDefaults:(NSDictionary<NSString *, id> *)registrationDictionary;
/*!
-addSuiteNamed: adds the full search list for 'suiteName' as a sub-search-list of the receiver's. The additional search lists are searched after the current domain, but before global defaults. Passing NSGlobalDomain or the current application's bundle identifier is unsupported.
*/
- (void)addSuiteNamed:(NSString *)suiteName;
/*!
-removeSuiteNamed: removes a sub-searchlist added via -addSuiteNamed:.
*/
- (void)removeSuiteNamed:(NSString *)suiteName;
/*!
-dictionaryRepresentation returns a composite snapshot of the values in the receiver's search list, such that [[receiver dictionaryRepresentation] objectForKey:x] will return the same thing as [receiver objectForKey:x].
*/
- (NSDictionary<NSString *, id> *)dictionaryRepresentation;
/*
Volatile domains are not added to any search list, are not persisted, and are not visible to other applications. Using them is not recommended.
*/
@property (readonly, copy) NSArray<NSString *> *volatileDomainNames;
- (NSDictionary<NSString *, id> *)volatileDomainForName:(NSString *)domainName;
- (void)setVolatileDomain:(NSDictionary<NSString *, id> *)domain forName:(NSString *)domainName;
- (void)removeVolatileDomainForName:(NSString *)domainName;
/// -persistentDomainNames returns an incomplete list of domains that have preferences stored in them.
- (NSArray *)persistentDomainNames API_DEPRECATED("Not recommended", macos(10.0,10.9), ios(2.0,7.0), watchos(2.0,2.0), tvos(9.0,9.0));
/// -persistentDomainForName: returns a dictionary representation of the search list entry specified by 'domainName', the current user, and any host.
- (nullable NSDictionary<NSString *, id> *)persistentDomainForName:(NSString *)domainName;
/// -setPersistentDomain:forName: replaces all values in the search list entry specified by 'domainName', the current user, and any host, with the values in 'domain'. The change will be persisted.
- (void)setPersistentDomain:(NSDictionary<NSString *, id> *)domain forName:(NSString *)domainName;
/// -removePersistentDomainForName: removes all values from the search list entry specified by 'domainName', the current user, and any host. The change is persistent.
- (void)removePersistentDomainForName:(NSString *)domainName;
/*!
-synchronize is deprecated and will be marked with the API_DEPRECATED macro in a future release.
-synchronize blocks the calling thread until all in-progress set operations have completed. This is no longer necessary. Replacements for previous uses of -synchronize depend on what the intent of calling synchronize was. If you synchronized...
- ...before reading in order to fetch updated values: remove the synchronize call
- ...after writing in order to notify another program to read: the other program can use KVO to observe the default without needing to notify
- ...before exiting in a non-app (command line tool, agent, or daemon) process: call CFPreferencesAppSynchronize(kCFPreferencesCurrentApplication)
- ...for any other reason: remove the synchronize call
*/
- (BOOL)synchronize;
// -objectIsForcedForKey: returns YES if the value for 'key' is provided by managed preferences (a configuration profile or mcx)
- (BOOL)objectIsForcedForKey:(NSString *)key;
// -objectIsForcedForKey:inDomain: returns YES if the value for 'key' is provided by managed preferences (a configuration profile or mcx) for the search list named by 'domain'
- (BOOL)objectIsForcedForKey:(NSString *)key inDomain:(NSString *)domain;
@end
/*!
NSUserDefaultsSizeLimitExceededNotification is posted on the main queue when more data is stored in user defaults than is allowed. Currently there is no limit for local user defaults except on tvOS, where a warning notification will be posted at 512kB, and the process terminated at 1MB. For ubiquitous defaults, the limit depends on the logged in iCloud user.
*/
FOUNDATION_EXPORT NSNotificationName const NSUserDefaultsSizeLimitExceededNotification API_AVAILABLE(ios(9.3), watchos(2.0), tvos(9.0)) API_UNAVAILABLE(macos);
/*!
NSUbiquitousUserDefaultsNoCloudAccountNotification is posted on the main queue to the default notification center when a cloud default is set, but no iCloud user is logged in.
This is not necessarily an error: ubiquitous defaults set when no iCloud user is logged in will be uploaded the next time one is available if configured to do so.
*/
FOUNDATION_EXPORT NSNotificationName const NSUbiquitousUserDefaultsNoCloudAccountNotification API_AVAILABLE(ios(9.3), watchos(2.0), tvos(9.0)) API_UNAVAILABLE(macos);
/*!
NSUbiquitousUserDefaultsDidChangeAccountsNotification is posted on the main queue to the default notification center when the user changes the primary iCloud account. The keys and values in the local key-value store have been replaced with those from the new account, regardless of the relative timestamps.
*/
FOUNDATION_EXPORT NSNotificationName const NSUbiquitousUserDefaultsDidChangeAccountsNotification API_AVAILABLE(ios(9.3), watchos(2.0), tvos(9.0)) API_UNAVAILABLE(macos);
/*!
NSUbiquitousUserDefaultsCompletedInitialSyncNotification is posted on the main queue when ubiquitous defaults finish downloading the first time a device is connected to an iCloud account, and when a user switches their primary iCloud account.
*/
FOUNDATION_EXPORT NSNotificationName const NSUbiquitousUserDefaultsCompletedInitialSyncNotification API_AVAILABLE(ios(9.3), watchos(2.0), tvos(9.0)) API_UNAVAILABLE(macos);
/*!
NSUserDefaultsDidChangeNotification is posted whenever any user defaults changed within the current process, but is not posted when ubiquitous defaults change, or when an outside process changes defaults. Using key-value observing to register observers for the specific keys of interest will inform you of all updates, regardless of where they're from.
*/
FOUNDATION_EXPORT NSNotificationName const NSUserDefaultsDidChangeNotification;
#if TARGET_OS_OSX
/* The following keys and their values are deprecated in Mac OS X 10.5 "Leopard". Developers should use NSLocale, NSDateFormatter and NSNumberFormatter to retrieve the values formerly returned by these keys.
*/
FOUNDATION_EXPORT NSString * const NSWeekDayNameArray API_DEPRECATED("", macos(10.0, 10.5)) API_UNAVAILABLE(ios, watchos, tvos);
FOUNDATION_EXPORT NSString * const NSShortWeekDayNameArray API_DEPRECATED("", macos(10.0, 10.5)) API_UNAVAILABLE(ios, watchos, tvos);
FOUNDATION_EXPORT NSString * const NSMonthNameArray API_DEPRECATED("", macos(10.0, 10.5)) API_UNAVAILABLE(ios, watchos, tvos);
FOUNDATION_EXPORT NSString * const NSShortMonthNameArray API_DEPRECATED("", macos(10.0, 10.5)) API_UNAVAILABLE(ios, watchos, tvos);
FOUNDATION_EXPORT NSString * const NSTimeFormatString API_DEPRECATED("", macos(10.0, 10.5)) API_UNAVAILABLE(ios, watchos, tvos);
FOUNDATION_EXPORT NSString * const NSDateFormatString API_DEPRECATED("", macos(10.0, 10.5)) API_UNAVAILABLE(ios, watchos, tvos);
FOUNDATION_EXPORT NSString * const NSTimeDateFormatString API_DEPRECATED("", macos(10.0, 10.5)) API_UNAVAILABLE(ios, watchos, tvos);
FOUNDATION_EXPORT NSString * const NSShortTimeDateFormatString API_DEPRECATED("", macos(10.0, 10.5)) API_UNAVAILABLE(ios, watchos, tvos);
FOUNDATION_EXPORT NSString * const NSCurrencySymbol API_DEPRECATED("", macos(10.0, 10.5)) API_UNAVAILABLE(ios, watchos, tvos);
FOUNDATION_EXPORT NSString * const NSDecimalSeparator API_DEPRECATED("", macos(10.0, 10.5)) API_UNAVAILABLE(ios, watchos, tvos);
FOUNDATION_EXPORT NSString * const NSThousandsSeparator API_DEPRECATED("", macos(10.0, 10.5)) API_UNAVAILABLE(ios, watchos, tvos);
FOUNDATION_EXPORT NSString * const NSDecimalDigits API_DEPRECATED("", macos(10.0, 10.5)) API_UNAVAILABLE(ios, watchos, tvos);
FOUNDATION_EXPORT NSString * const NSAMPMDesignation API_DEPRECATED("", macos(10.0, 10.5)) API_UNAVAILABLE(ios, watchos, tvos);
FOUNDATION_EXPORT NSString * const NSHourNameDesignations API_DEPRECATED("", macos(10.0, 10.5)) API_UNAVAILABLE(ios, watchos, tvos);
FOUNDATION_EXPORT NSString * const NSYearMonthWeekDesignations API_DEPRECATED("", macos(10.0, 10.5)) API_UNAVAILABLE(ios, watchos, tvos);
FOUNDATION_EXPORT NSString * const NSEarlierTimeDesignations API_DEPRECATED("", macos(10.0, 10.5)) API_UNAVAILABLE(ios, watchos, tvos);
FOUNDATION_EXPORT NSString * const NSLaterTimeDesignations API_DEPRECATED("", macos(10.0, 10.5)) API_UNAVAILABLE(ios, watchos, tvos);
FOUNDATION_EXPORT NSString * const NSThisDayDesignations API_DEPRECATED("", macos(10.0, 10.5)) API_UNAVAILABLE(ios, watchos, tvos);
FOUNDATION_EXPORT NSString * const NSNextDayDesignations API_DEPRECATED("", macos(10.0, 10.5)) API_UNAVAILABLE(ios, watchos, tvos);
FOUNDATION_EXPORT NSString * const NSNextNextDayDesignations API_DEPRECATED("", macos(10.0, 10.5)) API_UNAVAILABLE(ios, watchos, tvos);
FOUNDATION_EXPORT NSString * const NSPriorDayDesignations API_DEPRECATED("", macos(10.0, 10.5)) API_UNAVAILABLE(ios, watchos, tvos);
FOUNDATION_EXPORT NSString * const NSDateTimeOrdering API_DEPRECATED("", macos(10.0, 10.5)) API_UNAVAILABLE(ios, watchos, tvos);
FOUNDATION_EXPORT NSString * const NSInternationalCurrencyString API_DEPRECATED("", macos(10.0, 10.5)) API_UNAVAILABLE(ios, watchos, tvos);
FOUNDATION_EXPORT NSString * const NSShortDateFormatString API_DEPRECATED("", macos(10.0, 10.5)) API_UNAVAILABLE(ios, watchos, tvos);
FOUNDATION_EXPORT NSString * const NSPositiveCurrencyFormatString API_DEPRECATED("", macos(10.0, 10.5)) API_UNAVAILABLE(ios, watchos, tvos);
FOUNDATION_EXPORT NSString * const NSNegativeCurrencyFormatString API_DEPRECATED("", macos(10.0, 10.5)) API_UNAVAILABLE(ios, watchos, tvos);
#endif
NS_ASSUME_NONNULL_END
