ICU 64.2
64.2

C++ API: Library for localized formatting of number, currency, and unit ranges. More...
#include <atomic>
#include "unicode/appendable.h"
#include "unicode/fieldpos.h"
#include "unicode/formattedvalue.h"
#include "unicode/fpositer.h"
#include "unicode/numberformatter.h"
Go to the source code of this file.
Data Structures  
struct  icu::number::impl::RangeMacroProps 
class  icu::number::NumberRangeFormatterSettings< Derived > 
An abstract base class for specifying settings related to number formatting. More...  
class  icu::number::UnlocalizedNumberRangeFormatter 
A NumberRangeFormatter that does not yet have a locale. More...  
class  icu::number::LocalizedNumberRangeFormatter 
A NumberRangeFormatter that has a locale associated with it; this means .formatRange() methods are available. More...  
class  icu::number::FormattedNumberRange 
The result of a number range formatting operation. More...  
class  icu::number::NumberRangeFormatter 
See the main description in numberrangeformatter.h for documentation and examples. More...  
Namespaces  
icu  
File coll.h.  
Typedefs  
typedef enum UNumberRangeCollapse  UNumberRangeCollapse 
Defines how to merge fields that are identical across the range sign. More...  
typedef enum UNumberRangeIdentityFallback  UNumberRangeIdentityFallback 
Defines the behavior when the two numbers in the range are identical after rounding. More...  
typedef enum UNumberRangeIdentityResult  UNumberRangeIdentityResult 
Used in the result class FormattedNumberRange to indicate to the user whether the numbers formatted in the range were equal or not, and whether or not the identity fallback was applied. More...  
Enumerations  
enum  UNumberRangeCollapse { UNUM_RANGE_COLLAPSE_AUTO, UNUM_RANGE_COLLAPSE_NONE, UNUM_RANGE_COLLAPSE_UNIT, UNUM_RANGE_COLLAPSE_ALL } 
Defines how to merge fields that are identical across the range sign. More...  
enum  UNumberRangeIdentityFallback { UNUM_IDENTITY_FALLBACK_SINGLE_VALUE, UNUM_IDENTITY_FALLBACK_APPROXIMATELY_OR_SINGLE_VALUE, UNUM_IDENTITY_FALLBACK_APPROXIMATELY, UNUM_IDENTITY_FALLBACK_RANGE } 
Defines the behavior when the two numbers in the range are identical after rounding. More...  
enum  UNumberRangeIdentityResult { UNUM_IDENTITY_RESULT_EQUAL_BEFORE_ROUNDING, UNUM_IDENTITY_RESULT_EQUAL_AFTER_ROUNDING, UNUM_IDENTITY_RESULT_NOT_EQUAL, UNUM_IDENTITY_RESULT_COUNT } 
Used in the result class FormattedNumberRange to indicate to the user whether the numbers formatted in the range were equal or not, and whether or not the identity fallback was applied. More...  
C++ API: Library for localized formatting of number, currency, and unit ranges.
The main entrypoint to the formatting of ranges of numbers, including currencies and other units of measurement.
Usage example:
NumberRangeFormatter::with() .identityFallback(UNUM_IDENTITY_FALLBACK_APPROXIMATELY_OR_SINGLE_VALUE) .numberFormatterFirst(NumberFormatter::with().adoptUnit(MeasureUnit::createMeter())) .numberFormatterSecond(NumberFormatter::with().adoptUnit(MeasureUnit::createKilometer())) .locale("enGB") .formatRange(750, 1.2, status) .toString(status); // => "750 m  1.2 km"
Like NumberFormatter, NumberRangeFormatter instances (i.e., LocalizedNumberRangeFormatter and UnlocalizedNumberRangeFormatter) are immutable and threadsafe. This API is based on the fluent design pattern popularized by libraries such as Google's Guava.
Definition in file numberrangeformatter.h.
typedef enum UNumberRangeCollapse UNumberRangeCollapse 
Defines how to merge fields that are identical across the range sign.
typedef enum UNumberRangeIdentityFallback UNumberRangeIdentityFallback 
Defines the behavior when the two numbers in the range are identical after rounding.
To programmatically detect when the identity fallback is used, compare the lower and upper BigDecimals via FormattedNumber.
typedef enum UNumberRangeIdentityResult UNumberRangeIdentityResult 
Used in the result class FormattedNumberRange to indicate to the user whether the numbers formatted in the range were equal or not, and whether or not the identity fallback was applied.
enum UNumberRangeCollapse 
Defines how to merge fields that are identical across the range sign.
Enumerator  

UNUM_RANGE_COLLAPSE_AUTO  Use locale data and heuristics to determine how much of the string to collapse. Could end up collapsing none, some, or all repeated pieces in a localesensitive way. The heuristics used for this option are subject to change over time.

UNUM_RANGE_COLLAPSE_NONE  Do not collapse any part of the number. Example: "3.2 thousand kilograms – 5.3 thousand kilograms"

UNUM_RANGE_COLLAPSE_UNIT  Collapse the unit part of the number, but not the notation, if present. Example: "3.2 thousand – 5.3 thousand kilograms"

UNUM_RANGE_COLLAPSE_ALL  Collapse any field that is equal across the range sign. May introduce ambiguity on the magnitude of the number. Example: "3.2 – 5.3 thousand kilograms"

Definition at line 49 of file numberrangeformatter.h.
Defines the behavior when the two numbers in the range are identical after rounding.
To programmatically detect when the identity fallback is used, compare the lower and upper BigDecimals via FormattedNumber.
Enumerator  

UNUM_IDENTITY_FALLBACK_SINGLE_VALUE  Show the number as a single value rather than a range. Example: "$5"

UNUM_IDENTITY_FALLBACK_APPROXIMATELY_OR_SINGLE_VALUE  Show the number using a localesensitive approximation pattern. If the numbers were the same before rounding, show the single value. Example: "~$5" or "$5"

UNUM_IDENTITY_FALLBACK_APPROXIMATELY  Show the number using a localesensitive approximation pattern. Use the range pattern always, even if the inputs are the same. Example: "~$5"

UNUM_IDENTITY_FALLBACK_RANGE  Show the number as the range of two equal values. Use the range pattern always, even if the inputs are the same. Example (with RangeCollapse.NONE): "$5 – $5"

Definition at line 91 of file numberrangeformatter.h.
Used in the result class FormattedNumberRange to indicate to the user whether the numbers formatted in the range were equal or not, and whether or not the identity fallback was applied.
Enumerator  

UNUM_IDENTITY_RESULT_EQUAL_BEFORE_ROUNDING  Used to indicate that the two numbers in the range were equal, even before any rounding rules were applied.

UNUM_IDENTITY_RESULT_EQUAL_AFTER_ROUNDING  Used to indicate that the two numbers in the range were equal, but only after rounding rules were applied.

UNUM_IDENTITY_RESULT_NOT_EQUAL  Used to indicate that the two numbers in the range were not equal, even after rounding rules were applied.

UNUM_IDENTITY_RESULT_COUNT  The number of entries in this enum.

Definition at line 131 of file numberrangeformatter.h.