Embedded Files
Description
Description
ICU is the premier library for software internationalization. ICU 52.1 is a major release of ICU, with new features, new APIs and many bug fixes in data and code.
Major changes since ICU 51 include the following:
Common Changes
Common Changes
Unicode 6.3: New bidi control codes, new Bidi_Class property values, two new bidi "bracket" properties; for other property value changes see the UAX #44 summary (tickets #10128, #10168).
The bidi algorithm implementation has also been updated to support the new properties and to match the updated algorithm in the Unicode 6.3 version of UAX #9 (ticket #10142).
Note: ICU 52 still uses collation root data based on Unicode Collation Algorithm 6.2 (UCA 6.2). (However, ICU 52 does use CLDR 24 collation tailoring data.)
CLDR 24: Improved coverage for top 70+ languages, fractional plural rules and forms, many new measurement units, major simplification of collation rule syntax, preliminary version of European Ordering Rules, new relative fields such as “last Sunday” and “now”, and much more (tickets #10222, #10335, #10380, #10404)
Time zone data: 2013g (ticket #10037).
Support new variants of Islamic calendar:
Made Calendar getDayOfWeekType behave as documented (ticket #10061).
New API for converting between Windows time zone ID and IANA tz database ID (ticket:#10148)
Technology Preview: New API for more granular control of DateFormat parse leniency (ticket #10261).
DateTimePatternGenerator:
Implement support for plurals that depend on displayed fractional values (tickets #8474, #10253, #10273).
MessageFormat and currency formatting etc. select appropriate plural forms for values with decimal digits (after the decimal point).
Segmentation:
Many other bug & API doc fixes.
ICU4C Specific Changes
ICU4C Specific Changes
Improved implementation of thread synchronization, using safer and more efficient APIs on most platforms. It was necessary to deprecate and disable the runtime-customization of mutex functions. Build-time customization is still possible. (ticket #10051)
Added plain C wrappers for Region class (ticket #10070).
Added plain C wrappers for NumberingSystem class (ticket #10039).
Added plain C wrapper for Formattable, and functions for parsing & formatting of number objects including BigDecimal equivalent (ticket #7912).
ICU4J Specific Changes
ICU4J Specific Changes
(none)
Known Issues
Known Issues
Updates in ICU 52.2
Updates in ICU 52.2
New Japanese era Reiwa (令和) support
IANA tzdata2019a
ICU4C Download
ICU4C Download
Latest ICU4C 52 Release
Version: 52.2
Release Date: 2019-04-11
Source and binary downloads are available on the git/GitHub tag page: https://github.com/unicode-org/icu/releases/tag/release-52-2
Previous ICU4C 52 Releases
Version: 52.1
Release Date: 2013-10-09
ICU4C Supported Platforms
ICU4C Supported Platforms
Key to testing frequency
Frequently tested
ICU will work on these platforms with these compilers
Rarely tested
ICU has been ported to these platforms but may not have been tested there recently
ICU4J Download
ICU4J Download
Latest ICU4J 52 Release
Version: 52.2
Release Date: 2019-04-11
Source and binary downloads are available on the git/GitHub tag page: https://github.com/unicode-org/icu/releases/tag/release-52-2
Maven dependency:
<dependency>
<groupId>com.ibm.icu</groupId>
<artifactId>icu4j</artifactId>
<version>52.2</version>
</dependency>
Previous ICU4J 52 Releases
Version: 52.1
Release Date: 2013-10-09
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