The user could have customized the locale settings on their machine, and by requesting anĮxplicit locale ID name rather than using LocaleID.DEFAULT your application would not Same result as using the LocaleID.DEFAULT even if the two locale ID names are the same. Passing an explicit value as the requestedLocaleIDName parameter does not necessarily give the The LocaleID.DEFAULT value preserves user's customized setting in the OS. Parameter to the constructor, then the name of the current locale specified by the user's operating system is If LocaleID.DEFAULT was used as the value for the requestedLocaleIDName.Then the name returned is the same as the requestedLocaleIDName property. The operating system provides support for the requested locale, If the requested locale was not LocaleID.DEFAULT and.

Value of the requestedLocaleIDName parameter passed to the Collator() constructor. There are three possibilities for the value of the name, depending on operating system and the The name of the actual locale ID used by this NumberFormatter object. Provided by the operating system, and the use of a fallback locale when a requested locale is not supported,ĭifferent users can see different formatting results, even when using the same locale ID. If the requested locale is not available, then the properties are set according toĪ fallback or default system locale, which can be retrieved using the actualLocaleIDName property.ĭue to the use of the user's settings, the use of formatting patterns If the operating system supports the requested locale, the number formatting propertiesĪre set according to the conventions and defaults of the requested locale. The grouping separator, the grouping pattern, and other elements within the number format can vary depending on the locale. The position of the negative symbol, the decimal separator, Of a specific locale, based on the user's preferences and features supported by the user's operating system. The NumberFormatter class uses the data and functionality provided by the operating systemĪnd is designed to format numbers according to the conventions The NumberFormatter class provides locale-sensitive formatting and parsing of numeric values.

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