ICU 74.2 74.2

Namespace List
Here is a list of all documented namespaces with brief descriptions:
[detail level 1 2 3]

►N icu | File coll.h
N NoUnit | Dimensionless unit for percent and permille
►C AlphabeticIndex | AlphabeticIndex supports the creation of a UI index appropriate for a given language
C Bucket | An index "bucket" with a label string and type
C ImmutableIndex | Immutable, thread-safe version of AlphabeticIndex
C AnnualTimeZoneRule | `AnnualTimeZoneRule` is a class used for representing a time zone rule which takes effect annually
C Appendable | Base class for objects to which Unicode characters and strings can be appended
C BasicTimeZone | `BasicTimeZone` is an abstract class extending `TimeZone`
C BreakIterator | Implements methods for finding the location of boundaries in text
C ByteSink | A ByteSink can be filled with bytes
►C BytesTrie | Light-weight, non-const reader class for a BytesTrie
C Iterator | Iterator for all of the (byte sequence, value) pairs in a BytesTrie
C State | BytesTrie state object, for saving a trie's current state and resetting the trie back to this state later
C BytesTrieBuilder | Builder class for BytesTrie
C Calendar | `Calendar` is an abstract base class for converting between a `UDate` object and a set of integer fields such as `YEAR`, `MONTH`, `DAY`, `HOUR`, and so on
C CanonicalIterator | This class allows one to iterate through all the strings that are canonically equivalent to a given string
C CaseMap | Low-level C++ case mapping functions
C Char16Ptr | Char16_t * wrapper with implicit conversion from distinct but bit-compatible pointer types
C CharacterIterator | Abstract class that defines an API for iteration on text objects
C CheckedArrayByteSink | Implementation of ByteSink that writes to a flat byte array, with bounds-checking: This sink will not write more than capacity bytes to outbuf
C ChoiceFormat | ChoiceFormat converts between ranges of numeric values and strings for those ranges
C CollationElementIterator | Used as an iterator to walk through each character of an international string
C CollationKey | Collation keys are generated by the Collator class
C Collator | The `Collator` class performs locale-sensitive string comparison
C CollatorFactory | A factory, used with registerFactory, the creates multiple collators and provides display names for them
C CompactDecimalFormat | IMPORTANT: New users are strongly encouraged to see if numberformatter.h fits their use case
C ConstChar16Ptr | Const char16_t * wrapper with implicit conversion from distinct but bit-compatible pointer types
C ConstrainedFieldPosition | Represents a span of a string containing a given field
C CurrencyAmount | A currency together with a numeric amount, such as 200 USD
C CurrencyPluralInfo | This class represents the information needed by DecimalFormat to format currency plural, such as "3.00 US dollars" or "1.00 US dollar"
C CurrencyUnit | A unit of currency, such as USD (U.S
C DateFormat | DateFormat is an abstract class for a family of classes that convert dates and times from their internal representations to textual form and back again in a language-independent manner
C DateFormatSymbols | DateFormatSymbols is a public class for encapsulating localizable date-time formatting data – including timezone data
C DateInterval | This class represents a date interval
C DateIntervalFormat | DateIntervalFormat is a class for formatting and parsing date intervals in a language-independent manner
C DateIntervalInfo | DateIntervalInfo is a public class for encapsulating localizable date time interval patterns
C DateTimePatternGenerator | This class provides flexible generation of date format patterns, like "yy-MM-dd"
C DateTimeRule | `DateTimeRule` is a class representing a time in a year by a rule specified by month, day of month, day of week and time in the day
C DecimalFormat | IMPORTANT: New users are strongly encouraged to see if numberformatter.h fits their use case
C DecimalFormatSymbols | This class represents the set of symbols needed by DecimalFormat to format numbers
►C DisplayOptions | Represents all the display options that are supported by CLDR such as grammatical case, noun class, ... etc
C Builder | Responsible for building `DisplayOptions`
►C Edits | Records lengths of string edits but not replacement text
C Iterator | Access to the list of edits
C ErrorCode | Wrapper class for UErrorCode, with conversion operators for direct use in ICU C and C++ APIs
C ExternalBreakEngine | Define an abstract interface for the host environment to provide a low level facility to break text for unicode text in script that the text boundary cannot be handled by upper level rule based logic, for example, for Chinese and Japanese word breaking, Thai, Khmer, Burmese, Lao and other Southeast Asian scripts
C FieldPosition | `FieldPosition` is a simple class used by `Format` and its subclasses to identify fields in formatted output
C FieldPositionIterator | FieldPositionIterator returns the field ids and their start/limit positions generated by a call to Format::format
C FilteredBreakIteratorBuilder | The BreakIteratorFilter is used to modify the behavior of a BreakIterator by constructing a new BreakIterator which suppresses certain segment boundaries
C FilteredNormalizer2 | Normalization filtered by a UnicodeSet
C FontRuns | The `FontRuns` class associates pointers to `LEFontInstance` objects with runs of text
C Format | Base class for all formats
C Formattable | Formattable objects can be passed to the Format class or its subclasses for formatting
C FormattedDateInterval | An immutable class containing the result of a date interval formatting operation
C FormattedList | An immutable class containing the result of a list formatting operation
C FormattedRelativeDateTime | An immutable class containing the result of a relative datetime formatting operation
C FormattedValue | An abstract formatted value: a string with associated field attributes
C ForwardCharacterIterator | Abstract class that defines an API for forward-only iteration on text objects
C GenderInfo | GenderInfo computes the gender of a list as a whole given the gender of each element
C GregorianCalendar | Concrete class which provides the standard calendar used by most of the world
C IDNA | Abstract base class for IDNA processing
C IDNAInfo | Output container for IDNA processing errors
C InitialTimeZoneRule | `InitialTimeZoneRule` represents a time zone rule representing a time zone effective from the beginning and has no actual start times
C ListFormatter | An immutable class for formatting a list, using data from CLDR (or supplied separately)
C LocalArray | "Smart pointer" class, deletes objects via the C++ array delete[] operator
►C Locale | A `Locale` object represents a specific geographical, political, or cultural region
C ConvertingIterator | A generic Locale iterator implementation over Locale input iterators
C Iterator | A Locale iterator interface similar to a Java Iterator<Locale>
C RangeIterator | A generic Locale iterator implementation over Locale input iterators
C LocaleBuilder | `LocaleBuilder` is used to build instances of `Locale` from values configured by the setters
C LocaleDisplayNames | Returns display names of Locales and components of Locales
►C LocaleMatcher | Immutable class that picks the best match between a user's desired locales and an application's supported locales
C Builder | LocaleMatcher builder
C Result | Data for the best-matching pair of a desired and a supported locale
C LocaleRuns | The `LocaleRuns` class associates pointers to `Locale` objects with runs of text
C LocalPointer | "Smart pointer" class, deletes objects via the standard C++ delete operator
C LocalPointerBase | "Smart pointer" base class; do not use directly: use LocalPointer etc
C Measure | An amount of a specified unit, consisting of a number and a Unit
C MeasureFormat |
C MeasureUnit | A unit such as length, mass, volume, currency, etc
C MessageFormat |
►C MessagePattern | Parses and represents ICU MessageFormat patterns
C Part | A message pattern "part", representing a pattern parsing event
C Normalizer | Old Unicode normalization API
C Normalizer2 | Unicode normalization functionality for standard Unicode normalization or for using custom mapping tables
C NumberFormat |
C NumberFormatFactory | A NumberFormatFactory is used to register new number formats
C NumberingSystem | Defines numbering systems
►C ParagraphLayout | ParagraphLayout
C Line | This class represents a single line of text in a `ParagraphLayout`
C VisualRun | This object represents a single visual run in a line of text in a paragraph
C ParsePosition | `ParsePosition` is a simple class used by `Format` and its subclasses to keep track of the current position during parsing
C PluralFormat |
C PluralRules | Defines rules for mapping non-negative numeric values onto a small set of keywords
C RegexMatcher | Class RegexMatcher bundles together a regular expression pattern and input text to which the expression can be applied
C RegexPattern | Class `RegexPattern` represents a compiled regular expression
C Region | `Region` is the class representing a Unicode Region Code, also known as a Unicode Region Subtag, which is defined based upon the BCP 47 standard
C RelativeDateTimeFormatter | Formats simple relative dates
C Replaceable | `Replaceable` is an abstract base class representing a string of characters that supports the replacement of a range of itself with a new string of characters
C ResourceBundle | A class representing a collection of resource information pertaining to a given locale
C RuleBasedBreakIterator | A subclass of BreakIterator whose behavior is specified using a list of rules
C RuleBasedCollator | Implementation of Collator, using data-driven tables
C RuleBasedNumberFormat | Formats numbers according to a set of rules
C RuleBasedTimeZone | BasicTimeZone subclass implemented in terms of InitialTimeZoneRule and TimeZoneRule instances
C RunArray | The `RunArray` class is a base class for building classes which represent data that is associated with runs of text
C ScientificNumberFormatter | A formatter that formats numbers in user-friendly scientific notation
C SearchIterator | `SearchIterator` is an abstract base class that provides methods to search for a pattern within a text string
C SelectFormat |
C SimpleDateFormat | SimpleDateFormat is a concrete class for formatting and parsing dates in a language-independent manner
C SimpleFormatter | Formats simple patterns like "{1} was born in {0}"
C SimpleNumberFormatFactory | A NumberFormatFactory that supports a single locale
C SimpleTimeZone | `SimpleTimeZone` is a concrete subclass of `TimeZone` that represents a time zone for use with a Gregorian calendar
C StringByteSink | Implementation of ByteSink that writes to a "string"
C StringCharacterIterator | A concrete subclass of CharacterIterator that iterates over the characters (code units or code points) in a UnicodeString
C StringEnumeration | Base class for 'pure' C++ implementations of uenum api
C StringPiece | A string-like object that points to a sized piece of memory
C StringSearch | `StringSearch` is a `SearchIterator` that provides language-sensitive text searching based on the comparison rules defined in a `RuleBasedCollator` object
C SymbolTable | An interface that defines both lookup protocol and parsing of symbolic names
C TimeArrayTimeZoneRule | `TimeArrayTimeZoneRule` represents a time zone rule whose start times are defined by an array of milliseconds since the standard base time
C TimeUnit | Measurement unit for time units
C TimeUnitAmount | Express a duration as a time unit and number
C TimeUnitFormat | Format or parse a TimeUnitAmount, using plural rules for the units where available
C TimeZone | `TimeZone` represents a time zone offset, and also figures out daylight savings
C TimeZoneFormat | `TimeZoneFormat` supports time zone display name formatting and parsing
►C TimeZoneNames | `TimeZoneNames` is an abstract class representing the time zone display name data model defined by UTS#35 Unicode Locale Data Markup Language (LDML)
C MatchInfoCollection | `MatchInfoCollection` represents a collection of time zone name matches used by `TimeZoneNames#find`
C TimeZoneRule | `TimeZoneRule` is a class representing a rule for time zone
C TimeZoneTransition | `TimeZoneTransition` is a class representing a time zone transition
►C Transliterator | `Transliterator` is an abstract class that transliterates text from one format to another
C Token | A context integer or pointer for a factory function, passed by value
C UCharCharacterIterator | A concrete subclass of CharacterIterator that iterates over the characters (code units or code points) in a char16_t array
►C UCharsTrie | Light-weight, non-const reader class for a UCharsTrie
C Iterator | Iterator for all of the (string, value) pairs in a UCharsTrie
C State | UCharsTrie state object, for saving a trie's current state and resetting the trie back to this state later
C UCharsTrieBuilder | Builder class for UCharsTrie
C UMemory | UMemory is the common ICU base class
C UnicodeFilter | `UnicodeFilter` defines a protocol for selecting a subset of the full range (U+0000 to U+10FFFF) of Unicode characters
C UnicodeFunctor | `UnicodeFunctor` is an abstract base class for objects that perform match and/or replace operations on Unicode strings
C UnicodeMatcher | `UnicodeMatcher` defines a protocol for objects that can match a range of characters in a Replaceable string
C UnicodeReplacer | `UnicodeReplacer` defines a protocol for objects that replace a range of characters in a Replaceable string with output text
C UnicodeSet | A mutable set of Unicode characters and multicharacter strings
C UnicodeSetIterator | UnicodeSetIterator iterates over the contents of a UnicodeSet
C UnicodeString | UnicodeString is a string class that stores Unicode characters directly and provides similar functionality as the Java String and StringBuffer/StringBuilder classes
C UnicodeStringAppendable | An Appendable implementation which writes to a UnicodeString
C UObject | UObject is the common ICU "boilerplate" class
C ValueRuns | The `ValueRuns` class associates integer values with runs of text
C VTimeZone | `VTimeZone` is a class implementing RFC2445 VTIMEZONE