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paperh18648 margl-907 margr0 margt0 margb0 fi0 ri0 ql sb0 f1 fs24 Copyright f3 'e3f1 1994 by NeXT Computer, Inc. All Rights Reserved.
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fs36 NSTimeZoneDetail
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fs28 f0 b fs24 Inherits From:tab b0 fs28 f1 NSTimeZone : NSObject
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fs28 s12 f0 b fs24 Conforms To:tab b0 fs28 f1 NSCoding, NSCopying (NSTimeZone)
fi0 NSObject (NSObject)
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fs28 s13 fi-2771 f0 b fs24 Declared In:tab b0 fs28 f1 Foundation/NSDate.h
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fs28 Class Description
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fs28 NSTimeZoneDetail is an abstract class that refines the behavior provided by NSTimeZone. NSTimeZone identifies a geopolitical area with a name (such as US/Pacific). NSTimeZoneDetail augments this region name with more specific information appropriate for a particular date within its geopolitical region: an abbreviation, an offset (in seconds) from Greenwich Mean Time (GMT), and an indication of whether Daylight Savings Time is in effect. The specificity afforded through NSTimeZoneDetail helps to resolve conflicts between abbreviations and offsets that can arise within regions.
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fs28 Even though it is a concrete subclass of NSTimeZone, NSTimeZoneDetail does i noti0 have 'aafactory'ba class methods that create and return time-zone objects. See the specification of NSTimeZone for methods that provide this ability.
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fs28 However, NSTimeZoneDetail does have methods that allow you to get the abbreviation and temporal offset of a time-zone object, as well as determine whether Daylight Savings Time is in effect.
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fs28 Querying an NSTimeZoneDetail
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fs28 fi-6552 {f3 -} (BOOL)b isDaylightSavingTimeZoneb0 tab Returns YES if the time-zone detail object is used in the representation of dates during Daylight Savings Time and returns NO otherwise.
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fs28 fi-6552 {f3 -} (NSString *)b timeZoneAbbreviationb0 tab Returns the abbreviation of the time-zone detail object, such as EDT (Eastern Daylight Time).
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fs28 fi-6552 {f3 -} (int)b timeZoneSecondsFromGMTb0 tab Returns the difference in seconds between the receiving time-zone detail object and Greenwich Mean Time. The offset can be a positive or negative value.
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