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virtual UnicodeString& NumberFormat::format ( double  number,
UnicodeString appendTo,
FieldPosition pos 
) const [pure virtual]

Format a double number. Concrete subclasses must implement these pure virtual methods.

number The value to be formatted.
appendTo Output parameter to receive result. Result is appended to existing contents.
pos On input: an alignment field, if desired. On output: the offsets of the alignment field.
Reference to 'appendTo' parameter. ICU 2.0

Implemented in ChoiceFormat, DecimalFormat, and RuleBasedNumberFormat.

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