JRuby 9.0.1.0 发布，Java 的 Ruby 解释器

JRuby 社区很高兴地宣布的 JRuby 9.0.1.0 发布。JRuby 9000 是最新的主流版本，兼容 Ruby 2.2.x，而  JRuby 9.0.1.0 是首个维护版本。

与 9.0.0.0 版本比较，该版本改进包括：

• Reduced memory usage since 9.0.0.0 by 13%

• Improved support for refinements; 70% of CRuby tests passing

• jruby-openssl updated to version 0.9.11

• psych updated to version 2.0.15

• 44 issues fixed for 9.0.1.0

完整 issue 列表：

• #3288 - 9K seems to be handling all jruby.xxx properties

• #3284 - Spec improvements

• #3283 - Not getting SIGCHLD when a child process dies

• #3277 - Spec improvements

• #3276 - Class with prepended module is its own superclass

• #3271 - bigdecimal & bigmath

• #3265 - Updates for RSpec 3

• #3251 - jruby: warning: unknown property jruby.{memory,stack}.max

• #3249 - Socket.send freezes string unexpectedly (RuntimeError: can't modify frozen string)

• #3248 - File.fnmatch doesn't match german vowels

• #3245 - Parser fails on `assert_equal(true, (not ()))` expresion

• #3238 - Fix Digest bubblebabble incorrect output on empty string

• #3237 - $! gets unset by rescue, even when the rescue doesn't catch the error

• #3233 - Rails.root set to "uri:classloader:/" for new Rails app with JRuby 9.0.0.0

• #3228 - Fix an embedded runtime memory leak in Java7ClassValue

• #3227 - Array#uniq behavior differs from MRI with BasicObject members

• #3224 - removed unused FileIO class from persistence.util

• #3221 - big decimal parser

• #3220 - RubyInstanceConfig#setupEnvironment throws AccessControlException on Windows

• #3218 - add to_h to the class used for ENV

• #3211 - bignum speedup

• #3200 - Fixing RangeError with code from 1.7 branch

• #3198 - licensing information out of date?

• #3189 - 9k fail ftp on Windows

• #3188 - jruby-1_7 merge failures on master

• #3187 - Add MRI test for proc visibility

• #3175 - 9k fail to compile ruby code of using multibyte char on Windows

• #3174 - ensure clause is executed before begin clause ends ?

• #3173 - Can't reference the proc itself in a proc

• #3165 - Fix RubyRange#initialize_copy mistakenly erroring on #dup'ing a range

• #3163 - dup on Range regression

• #3162 - Different results for `to_h` and `to_hash` on `ENV`

• #3118 - Jruby 9000 RC1 throws Java::JavaLang::ClassCastException: org.jruby.RubyBignum cannot be cast to org.jruby.RubyFixnum

• #2956 - bubblebabble is wrong for empty strings

• #2901 - Psych fails with MBC strings in ASCII-8BIT

• #2148 - BigMath.log fails MRI 2.2 tests

• #2131 - Divergent behavior in MRI vs JRuby wrt Class::undef

• #1968 - JRuby Yaml implementation (psych) fails dumping "-."

• #1907 - Frozen

• #1900 - "invalid byte sequence in UTF-8" after String#encode!; behavior differs from MRI (JRuby-1.7.13)

• #1877 - Array#delete_if - no size update

• #1770 - Wrong julian day for DateTime with a negative rational offset

• #1328 - Encoding of symbol literals does not respect the encoding of the source file

• #378 - Need ability to set Socket.setReuseAddress() in RubyTCPSocket.java

JRuby是面向Ruby、基于 Java 虚拟机(JVM)的一种解释程序，它结合了Ruby语言的简易性和功能强大的JVM的执行机制，包括与Java库 全面集成。Rails彻底加快及简化了Web应用的开发，不过它让人觉得不够成熟，特别是在高端企业级功能方面。另一方面，Java平台及其虚拟机、库和 应用服务器的速度、稳定性和功能方面却一直在提升，现在已被公认为是开发高端服务器应用的领先平台。不过如果Java平台不与Ruby等新兴语言联系在一 起，就有可能落后于流行趋势。