Data Structures

Here are the data structures with brief descriptions:

Nicu	File coll.h
Nmessage2
Ndata_model
CLiteral	The Literal class corresponds to the literal nonterminal in the MessageFormat 2 grammar, https://github.com/unicode-org/message-format-wg/blob/main/spec/message.abnf and the Literal interface defined in // https://github.com/unicode-org/message-format-wg/blob/main/spec/data-model.md#expressions
COperand	The Operand class corresponds to the operand nonterminal in the MessageFormat 2 grammar, https://github.com/unicode-org/message-format-wg/blob/main/spec/message.abnf
CKey	The Key class corresponds to the key nonterminal in the MessageFormat 2 grammar, https://github.com/unicode-org/message-format-wg/blob/main/spec/message.abnf
CSelectorKeys	The SelectorKeys class represents the key list for a single variant
CBuilder	The mutable SelectorKeys::Builder class allows the key list to be constructed one key at a time
COption	An Option pairs an option name with an Operand
COperator	The Operator class corresponds to the FunctionRef type in the Expression interface defined in https://github.com/unicode-org/message-format-wg/blob/main/spec/data-model.md#patterns
CBuilder	The mutable Operator::Builder class allows the operator to be constructed incrementally
CMarkup	The Markup class corresponds to the markup nonterminal in the MessageFormat 2 grammar and the markup interface defined in https://github.com/unicode-org/message-format-wg/blob/main/spec/data-model/message.json
CBuilder	The mutable Markup::Builder class allows the markup to be constructed incrementally
CExpression	The Expression class corresponds to the expression nonterminal in the MessageFormat 2 grammar and the Expression interface defined in https://github.com/unicode-org/message-format-wg/blob/main/spec/data-model.md#patterns
CBuilder	The mutable Expression::Builder class allows the operator to be constructed incrementally
CPatternPart	A PatternPart is a single element (text or expression) in a Pattern
CPattern	A Pattern is a sequence of formattable parts
CBuilder	The mutable Pattern::Builder class allows the pattern to be constructed one part at a time
CIterator	The Pattern::Iterator class provides an iterator over the formattable parts of a pattern
CVariant	A Variant pairs a list of keys with a pattern It corresponds to the Variant interface defined in https://github.com/unicode-org/message-format-wg/tree/main/spec/data-model
CBinding	A Binding pairs a variable name with an expression
CMFDataModel	The MFDataModel class describes a parsed representation of the text of a message
CBuilder	The mutable MFDataModel::Builder class allows the data model to be constructed incrementally
CDateInfo	The DateInfo struct represents all the information needed to format a date with a time zone
CFormattable	The Formattable class represents a typed value that can be formatted, originating either from a message argument or a literal in the code
CFormattableObject	FormattableObject is an abstract class that can be implemented in order to define an arbitrary class that can be passed to a custom formatter or selector function
CFormattedMessage	Not yet implemented: The result of a message formatting operation
CFormattedPlaceholder	A FormattablePlaceholder encapsulates an input value (a message2::Formattable) together with an optional output value (a message2::FormattedValue)
CFormattedValue	A FormattedValue represents the result of formatting a message2::Formattable
CFormatter	Interface that formatter classes must implement
CFormatterFactory	Interface that factory classes for creating formatters must implement
CFunctionOptions	Structure encapsulating named options passed to a custom selector or formatter
CMessageArguments	The MessageArguments class represents the named arguments to a message
CMessageFormatter
CBuilder	The mutable Builder class allows each part of the MessageFormatter to be initialized separately; calling its build() method yields an immutable MessageFormatter
CMFFunctionRegistry	Defines mappings from names of formatters and selectors to functions implementing them
CBuilder	The mutable Builder class allows each formatter and selector factory to be initialized separately; calling its build() method yields an immutable MFFunctionRegistry object
CSelector	Interface that selector classes must implement
CSelectorFactory	Interface that factory classes for creating selectors must implement
Nnumber
Nimpl
CGrouper
CMacroProps
CPadder
CRangeMacroProps
CStringProp	Manages NumberFormatterSettings::usage()'s char* instance on the heap
CSymbolsWrapper
CCurrencyPrecision	A class that defines a rounding precision parameterized by a currency to be used when formatting numbers in NumberFormatter
CFormattedNumber	The result of a number formatting operation
CFormattedNumberRange	The result of a number range formatting operation
CFractionPrecision	A class that defines a rounding precision based on a number of fraction places and optionally significant digits to be used when formatting numbers in NumberFormatter
CIncrementPrecision	A class that defines a rounding precision parameterized by a rounding increment to be used when formatting numbers in NumberFormatter
CIntegerWidth	A class that defines the strategy for padding and truncating integers before the decimal separator
CLocalizedNumberFormatter	A NumberFormatter that has a locale associated with it; this means .format() methods are available
CLocalizedNumberRangeFormatter	A NumberRangeFormatter that has a locale associated with it; this means .formatRange() methods are available
CNotation	A class that defines the notation style to be used when formatting numbers in NumberFormatter
CNumberFormatter	See the main description in numberformatter.h for documentation and examples
CNumberFormatterSettings	An abstract base class for specifying settings related to number formatting
CNumberRangeFormatter	See the main description in numberrangeformatter.h for documentation and examples
CNumberRangeFormatterSettings	An abstract base class for specifying settings related to number formatting
CPrecision	A class that defines the rounding precision to be used when formatting numbers in NumberFormatter
CScale	A class that defines a quantity by which a number should be multiplied when formatting
CScientificNotation	A class that defines the scientific notation style to be used when formatting numbers in NumberFormatter
CSimpleNumber	An input type for SimpleNumberFormatter
CSimpleNumberFormatter	A special NumberFormatter focused on smaller binary size and memory use
CUnlocalizedNumberFormatter	A NumberFormatter that does not yet have a locale
CUnlocalizedNumberRangeFormatter	A NumberRangeFormatter that does not yet have a locale
Nprv
Cvalue_type_or_char
Cvalue_type_or_char< StringClass, std::void_t< typename StringClass::value_type > >
CAlphabeticIndex	AlphabeticIndex supports the creation of a UI index appropriate for a given language
CBucket	An index "bucket" with a label string and type
CImmutableIndex	Immutable, thread-safe version of AlphabeticIndex
CAnnualTimeZoneRule	AnnualTimeZoneRule is a class used for representing a time zone rule which takes effect annually
CBasicTimeZone	BasicTimeZone is an abstract class extending TimeZone
CBreakIterator	Implements methods for finding the location of boundaries in text
CByteSink	A ByteSink can be filled with bytes
CBytesTrie	Light-weight, non-const reader class for a BytesTrie
CState	BytesTrie state object, for saving a trie's current state and resetting the trie back to this state later
CIterator	Iterator for all of the (byte sequence, value) pairs in a BytesTrie
CCalendar	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
CCanonicalIterator	This class allows one to iterate through all the strings that are canonically equivalent to a given string
CCaseMap	Low-level C++ case mapping functions
CChar16Ptr	Char16_t * wrapper with implicit conversion from distinct but bit-compatible pointer types
CCharacterIterator	Abstract class that defines an API for iteration on text objects
CCheckedArrayByteSink	Implementation of ByteSink that writes to a flat byte array, with bounds-checking: This sink will not write more than capacity bytes to outbuf
CChoiceFormat	ChoiceFormat converts between ranges of numeric values and strings for those ranges
CCollationElementIterator	Used as an iterator to walk through each character of an international string
CCollationKey	Collation keys are generated by the Collator class
CCollator	The Collator class performs locale-sensitive string comparison
CCollatorFactory	A factory, used with registerFactory, the creates multiple collators and provides display names for them
CCompactDecimalFormat	IMPORTANT: New users are strongly encouraged to see if numberformatter.h fits their use case
CConstChar16Ptr	Const char16_t * wrapper with implicit conversion from distinct but bit-compatible pointer types
CConstrainedFieldPosition	Represents a span of a string containing a given field
CCurrencyAmount	A currency together with a numeric amount, such as 200 USD
CCurrencyPluralInfo	This class represents the information needed by DecimalFormat to format currency plural, such as "3.00 US dollars" or "1.00 US dollar"
CCurrencyUnit	A unit of currency, such as USD (U.S
CDateFormat	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
CDateFormatSymbols	DateFormatSymbols is a public class for encapsulating localizable date-time formatting data – including timezone data
CDateInterval	This class represents a date interval
CDateIntervalFormat	DateIntervalFormat is a class for formatting and parsing date intervals in a language-independent manner
CDateIntervalInfo	DateIntervalInfo is a public class for encapsulating localizable date time interval patterns
CDateTimePatternGenerator	This class provides flexible generation of date format patterns, like "yy-MM-dd"
CDateTimeRule	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
CDecimalFormat	IMPORTANT: New users are strongly encouraged to see if numberformatter.h fits their use case
CDecimalFormatSymbols	This class represents the set of symbols needed by DecimalFormat to format numbers
CDisplayOptions	Represents all the display options that are supported by CLDR such as grammatical case, noun class, ... etc
CBuilder	Responsible for building DisplayOptions
CEdits	Records lengths of string edits but not replacement text
CIterator	Access to the list of edits
CErrorCode	Wrapper class for UErrorCode, with conversion operators for direct use in ICU C and C++ APIs
CExternalBreakEngine	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
CFieldPosition	FieldPosition is a simple class used by Format and its subclasses to identify fields in formatted output
CFieldPositionIterator	FieldPositionIterator returns the field ids and their start/limit positions generated by a call to Format::format
CFilteredBreakIteratorBuilder	The BreakIteratorFilter is used to modify the behavior of a BreakIterator by constructing a new BreakIterator which suppresses certain segment boundaries
CFilteredNormalizer2	Normalization filtered by a UnicodeSet
CFontRuns	The FontRuns class associates pointers to LEFontInstance objects with runs of text
CFormat	Base class for all formats
CFormattable	Formattable objects can be passed to the Format class or its subclasses for formatting
CFormattedDateInterval	An immutable class containing the result of a date interval formatting operation
CFormattedList	An immutable class containing the result of a list formatting operation
CFormattedRelativeDateTime	An immutable class containing the result of a relative datetime formatting operation
CFormattedValue	An abstract formatted value: a string with associated field attributes
CForwardCharacterIterator	Abstract class that defines an API for forward-only iteration on text objects
CGenderInfo	GenderInfo computes the gender of a list as a whole given the gender of each element
CGregorianCalendar	Concrete class which provides the standard calendar used by most of the world
CIDNA	Abstract base class for IDNA processing
CIDNAInfo	Output container for IDNA processing errors
CInitialTimeZoneRule	InitialTimeZoneRule represents a time zone rule representing a time zone effective from the beginning and has no actual start times
CListFormatter	An immutable class for formatting a list, using data from CLDR (or supplied separately)
CLocalArray	"Smart pointer" class, deletes objects via the C++ array delete[] operator
CLocale	A Locale object represents a specific geographical, political, or cultural region
CIterator	A Locale iterator interface similar to a Java Iterator<Locale>
CRangeIterator	A generic Locale iterator implementation over Locale input iterators
CConvertingIterator	A generic Locale iterator implementation over Locale input iterators
CLocaleBuilder	LocaleBuilder is used to build instances of Locale from values configured by the setters
CLocaleDisplayNames	Returns display names of Locales and components of Locales
CLocaleMatcher	Immutable class that picks the best match between a user's desired locales and an application's supported locales
CResult	Data for the best-matching pair of a desired and a supported locale
CBuilder	LocaleMatcher builder
CLocaleRuns	The LocaleRuns class associates pointers to Locale objects with runs of text
CLocalPointer	"Smart pointer" class, deletes objects via the standard C++ delete operator
CLocalPointerBase	"Smart pointer" base class; do not use directly: use LocalPointer etc
CMeasure	An amount of a specified unit, consisting of a number and a Unit
CMeasureFormat
CMeasureUnit	A unit such as length, mass, volume, currency, etc
CMessageFormat
CMessagePattern	Parses and represents ICU MessageFormat patterns
CPart	A message pattern "part", representing a pattern parsing event
CNormalizer	Old Unicode normalization API
CNormalizer2	Unicode normalization functionality for standard Unicode normalization or for using custom mapping tables
CNumberFormat
CNumberFormatFactory	A NumberFormatFactory is used to register new number formats
CNumberingSystem	Defines numbering systems
CParagraphLayout	ParagraphLayout
CLine	This class represents a single line of text in a ParagraphLayout
CVisualRun	This object represents a single visual run in a line of text in a paragraph
CParsePosition	ParsePosition is a simple class used by Format and its subclasses to keep track of the current position during parsing
CPluralFormat
CPluralRules	Defines rules for mapping non-negative numeric values onto a small set of keywords
CRegexMatcher	Class RegexMatcher bundles together a regular expression pattern and input text to which the expression can be applied
CRegexPattern	Class RegexPattern represents a compiled regular expression
CRegion	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
CRelativeDateTimeFormatter	Formats simple relative dates
CReplaceable	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
CResourceBundle	A class representing a collection of resource information pertaining to a given locale
CRuleBasedBreakIterator	A subclass of BreakIterator whose behavior is specified using a list of rules
CRuleBasedCollator	Implementation of Collator, using data-driven tables
CRuleBasedNumberFormat	Formats numbers according to a set of rules
CRuleBasedTimeZone	BasicTimeZone subclass implemented in terms of InitialTimeZoneRule and TimeZoneRule instances
CRunArray	The RunArray class is a base class for building classes which represent data that is associated with runs of text
CScientificNumberFormatter	A formatter that formats numbers in user-friendly scientific notation
CSearchIterator	SearchIterator is an abstract base class that provides methods to search for a pattern within a text string
CSelectFormat
CSimpleDateFormat	SimpleDateFormat is a concrete class for formatting and parsing dates in a language-independent manner
CSimpleFormatter	Formats simple patterns like "{1} was born in {0}"
CSimpleNumberFormatFactory	A NumberFormatFactory that supports a single locale
CSimpleTimeZone	SimpleTimeZone is a concrete subclass of TimeZone that represents a time zone for use with a Gregorian calendar
CStringByteSink	Implementation of ByteSink that writes to a "string"
CStringCharacterIterator	A concrete subclass of CharacterIterator that iterates over the characters (code units or code points) in a UnicodeString
CStringEnumeration	Base class for 'pure' C++ implementations of uenum api
CStringPiece	A string-like object that points to a sized piece of memory
CStringSearch	StringSearch is a SearchIterator that provides language-sensitive text searching based on the comparison rules defined in a RuleBasedCollator object
CSymbolTable	An interface that defines both lookup protocol and parsing of symbolic names
CTimeArrayTimeZoneRule	TimeArrayTimeZoneRule represents a time zone rule whose start times are defined by an array of milliseconds since the standard base time
CTimeUnit	Measurement unit for time units
CTimeUnitAmount	Express a duration as a time unit and number
CTimeUnitFormat	Format or parse a TimeUnitAmount, using plural rules for the units where available
CTimeZone	TimeZone represents a time zone offset, and also figures out daylight savings
CTimeZoneFormat	TimeZoneFormat supports time zone display name formatting and parsing
CTimeZoneNames	TimeZoneNames is an abstract class representing the time zone display name data model defined by UTS#35 Unicode Locale Data Markup Language (LDML)
CMatchInfoCollection	MatchInfoCollection represents a collection of time zone name matches used by TimeZoneNames#find
CTimeZoneRule	TimeZoneRule is a class representing a rule for time zone
CTimeZoneTransition	TimeZoneTransition is a class representing a time zone transition
CTransliterator	Transliterator is an abstract class that transliterates text from one format to another
CToken	A context integer or pointer for a factory function, passed by value
CUCharCharacterIterator	A concrete subclass of CharacterIterator that iterates over the characters (code units or code points) in a char16_t array
CUCharsTrie	Light-weight, non-const reader class for a UCharsTrie
CState	UCharsTrie state object, for saving a trie's current state and resetting the trie back to this state later
CIterator	Iterator for all of the (string, value) pairs in a UCharsTrie
CUCharsTrieBuilder	Builder class for UCharsTrie
CUMemory	UMemory is the common ICU base class
CUnicodeFilter	UnicodeFilter defines a protocol for selecting a subset of the full range (U+0000 to U+10FFFF) of Unicode characters
CUnicodeFunctor	UnicodeFunctor is an abstract base class for objects that perform match and/or replace operations on Unicode strings
CUnicodeMatcher	UnicodeMatcher defines a protocol for objects that can match a range of characters in a Replaceable string
CUnicodeReplacer	UnicodeReplacer defines a protocol for objects that replace a range of characters in a Replaceable string with output text
CUnicodeSet	A mutable set of Unicode characters and multicharacter strings
CUnicodeSetIterator	UnicodeSetIterator iterates over the contents of a UnicodeSet
CUnicodeString	UnicodeString is a string class that stores Unicode characters directly and provides similar functionality as the Java String and StringBuffer/StringBuilder classes
CUObject	UObject is the common ICU "boilerplate" class
CValueRuns	The ValueRuns class associates integer values with runs of text
CVTimeZone	VTimeZone is a class implementing RFC2445 VTIMEZONE
NU_HEADER_ONLY_NAMESPACE
Ncollator
Ninternal
CPredicate	Function object for performing comparisons using a UCollator
Nprv
Crange_type
Crange_type< Range, std::void_t< decltype(std::declval< Range >().begin()), decltype(std::declval< Range >().end())> >
Cis_basic_string_view
Cis_basic_string_view< std::basic_string_view< Args... > >
CCodePointsIterator
CAllCodePoints	A C++ "range" over all Unicode code points U+0000..U+10FFFF
CAllScalarValues	A C++ "range" over all Unicode scalar values U+0000..U+D7FF & U+E000..U+10FFFF
CCodePointRange	A contiguous range of code points in a USet/UnicodeSet
Citerator
CCodeUnits	Result of validating and decoding a code unit sequence for one code point
CUnsafeCodeUnits	Result of decoding a code unit sequence for one code point
CUnsafeUTFIterator	Non-validating iterator over the code points in a Unicode string
CUnsafeUTFStringCodePoints	A C++ "range" for non-validating iteration over all of the code points of a code unit range
CUnsafeUTFStringCodePointsAdaptor
CUSetCodePointIterator	Iterator returned by USetCodePoints
CUSetCodePoints	C++ "range" for iterating over the code points of a USet
CUSetElementIterator	Iterator returned by USetElements
CUSetElements	A C++ "range" for iterating over all of the elements of a USet
CUSetRangeIterator	Iterator returned by USetRanges
CUSetRanges	C++ "range" for iterating over the code point ranges of a USet
CUSetStringIterator	Iterator returned by USetStrings
CUSetStrings	C++ "range" for iterating over the empty and multi-character strings of a USet
CUTFIterator	Validating iterator over the code points in a Unicode string
CUTFStringCodePoints	A C++ "range" for validating iteration over all of the code points of a code unit range
CUTFStringCodePointsAdaptor
CBytesTrieBuilder	Builder class for BytesTrie
CLocalUBiDiPointer	"Smart pointer" class, closes a UBiDi via ubidi_close()
CLocalUBiDiTransformPointer	"Smart pointer" class, closes a UBiDiTransform via ubiditransform_close()
CLocalUBreakIteratorPointer	"Smart pointer" class, closes a UBreakIterator via ubrk_close()
CLocalUCalendarPointer	"Smart pointer" class, closes a UCalendar via ucal_close()
CLocalUCaseMapPointer	"Smart pointer" class, closes a UCaseMap via ucasemap_close()
CLocalUCharsetDetectorPointer	"Smart pointer" class, closes a UCharsetDetector via ucsdet_close()
CLocalUCollatorPointer	"Smart pointer" class, closes a UCollator via ucol_close()
CLocalUConstrainedFieldPositionPointer	"Smart pointer" class; closes a UConstrainedFieldPosition via ucfpos_close()
CLocalUConverterPointer	"Smart pointer" class, closes a UConverter via ucnv_close()
CLocalUConverterSelectorPointer	"Smart pointer" class, closes a UConverterSelector via ucnvsel_close()
CLocalUCPTriePointer	"Smart pointer" class, closes a UCPTrie via ucptrie_close()
CLocalUDataMemoryPointer	"Smart pointer" class, closes a UDataMemory via udata_close()
CLocalUDateFormatPointer	"Smart pointer" class, closes a UDateFormat via udat_close()
CLocalUDateIntervalFormatPointer	"Smart pointer" class, closes a UDateIntervalFormat via udtitvfmt_close()
CLocalUDateTimePatternGeneratorPointer	"Smart pointer" class, closes a UDateTimePatternGenerator via udatpg_close()
CLocalUEnumerationPointer	"Smart pointer" class, closes a UEnumeration via uenum_close()
CLocalUFieldPositionIteratorPointer	"Smart pointer" class, closes a UFieldPositionIterator via ufieldpositer_close()
CLocalUFILEPointer	"Smart pointer" class, closes a UFILE via u_fclose()
CLocalUFormattablePointer	"Smart pointer" class, closes a UFormattable via ufmt_close()
CLocalUFormattedDateIntervalPointer	"Smart pointer" class, closes a UFormattedDateInterval via udtitvfmt_close()
CLocalUFormattedListPointer	"Smart pointer" class, closes a UFormattedList via ulistfmt_closeResult()
CLocalUFormattedNumberPointer	"Smart pointer" class; closes a UFormattedNumber via unumf_closeResult()
CLocalUFormattedRelativeDateTimePointer	"Smart pointer" class, closes a UFormattedRelativeDateTime via ureldatefmt_closeResult()
CLocalUIDNAPointer	"Smart pointer" class, closes a UIDNA via uidna_close()
CLocalUListFormatterPointer	"Smart pointer" class, closes a UListFormatter via ulistfmt_close()
CLocalULocaleBuilderPointer	"Smart pointer" class, closes a ULocaleBuilder via ulocbld_close()
CLocalULocaleDataPointer	"Smart pointer" class, closes a ULocaleData via ulocdata_close()
CLocalULocaleDisplayNamesPointer	"Smart pointer" class, closes a ULocaleDisplayNames via uldn_close()
CLocalULocalePointer	"Smart pointer" class, closes a ULocale via ulocale_close()
CLocalUMessageFormatPointer	"Smart pointer" class, closes a UMessageFormat via umsg_close()
CLocalUMutableCPTriePointer	"Smart pointer" class, closes a UMutableCPTrie via umutablecptrie_close()
CLocalUNormalizer2Pointer	"Smart pointer" class, closes a UNormalizer2 via unorm2_close()
CLocalUNumberFormatPointer	"Smart pointer" class, closes a UNumberFormat via unum_close()
CLocalUNumberFormatterPointer	"Smart pointer" class; closes a UNumberFormatter via unumf_close()
CLocalUNumberingSystemPointer	"Smart pointer" class, closes a UNumberingSystem via unumsys_close()
CLocalUNumberRangeFormatterPointer	"Smart pointer" class; closes a UNumberFormatter via unumf_close()
CLocalUPluralRulesPointer	"Smart pointer" class, closes a UPluralRules via uplrules_close()
CLocalURegularExpressionPointer	"Smart pointer" class, closes a URegularExpression via uregex_close()
CLocalURelativeDateTimeFormatterPointer	"Smart pointer" class, closes a URelativeDateTimeFormatter via ureldatefmt_close()
CLocalUResourceBundlePointer	"Smart pointer" class, closes a UResourceBundle via ures_close()
CLocalUSetPointer	"Smart pointer" class, closes a USet via uset_close()
CLocalUSimpleNumberFormatterPointer	"Smart pointer" class; closes a USimpleNumberFormatter via usnumf_close()
CLocalUSimpleNumberPointer	"Smart pointer" class; closes a USimpleNumber via usnum_close()
CLocalUSpoofCheckerPointer	"Smart pointer" class, closes a USpoofChecker via uspoof_close()
CLocalUSpoofCheckResultPointer	"Smart pointer" class, closes a USpoofCheckResult via uspoof_closeCheckResult()
CLocalUStringPrepProfilePointer	"Smart pointer" class, closes a UStringPrepProfile via usprep_close()
CLocalUStringSearchPointer	"Smart pointer" class, closes a UStringSearch via usearch_close()
CLocalUTextPointer	"Smart pointer" class, closes a UText via utext_close()
CLocalUTransliteratorPointer	"Smart pointer" class, closes a UTransliterator via utrans_close()
CUCharIterator	C API for code unit iteration
CUConverterFromUnicodeArgs	The structure for the fromUnicode callback function parameter
CUConverterToUnicodeArgs	The structure for the toUnicode callback function parameter
CUCPTrie	Immutable Unicode code point trie structure
CUDataInfo	UDataInfo contains the properties about the requested data
CUFieldPosition	A struct representing a range of text containing a specific field
CUIDNAInfo	Output container for IDNA processing errors
CUParseError	A UParseError struct is used to returned detailed information about parsing errors
CUReplaceableCallbacks	A set of function pointers that transliterators use to manipulate a UReplaceable
CUSerializedSet	A serialized form of a Unicode set
CUText	UText struct
CUTextFuncs	(public) Function dispatch table for UText
CUTransPosition	Position structure for utrans_transIncremental() incremental transliteration