9 New Features in Ruby 2.6
A new version of Ruby is coming with new features & performance improvements. Would you like to keep up with the changes? Let’s have a look! Endless Ranges Ruby 2.5 & older versions already support one form of endless range (with Float::INFINITY), but Ruby 2.6 takes this to the next level. The new endless range looks like this: (1..) This is different from a regular range because it doesn’t have a
Ruby 2.6 JIT / RubyConf 2018
RubyConf 2018 Los Angeles
CVE-2018-16396: Array#pack ãŠã‚ˆã³ String#unpack ã®ä¸€éƒ¨ã®ãƒ•ã‚©ãƒ¼ãƒžãƒƒãƒˆæŒ‡å®šã«ãŠã„ã¦taintフラグãŒä¼æ’ã—ãªã„脆弱性ã«ã¤ã„ã¦
CVE-2018-16396: Array#pack ãŠã‚ˆã³ String#unpack ã®ä¸€éƒ¨ã®ãƒ•ã‚©ãƒ¼ãƒžãƒƒãƒˆæŒ‡å®šã«ãŠã„ã¦taintフラグãŒä¼æ’ã—ãªã„脆弱性ã«ã¤ã„㦠Posted by usa on 17 Oct 2018 Array#pack ãŠã‚ˆã³ String#unpack ã®ä¸€éƒ¨ã®ãƒ•ã‚©ãƒ¼ãƒžãƒƒãƒˆæŒ‡å®šã«ãŠã„ã¦ã€å…ƒãƒ‡ãƒ¼ã‚¿ã® taint フラグãŒé©åˆ‡ã«å‡ºåŠ›æ–‡å—列・é…列ã«å¯¾ã—ã¦ä¼æ’ã—ãªã„ã¨ã„ã†è„†å¼±æ€§ãŒç™ºè¦‹ã•ã‚Œã¾ã—ãŸã€‚ ã“ã®è„†å¼±æ€§ã¯ã€CVE-2018-16396 ã¨ã—ã¦ç™»éŒ²ã•ã‚Œã¦ã„ã¾ã™ã€‚ 詳細 Array#pack メソッドã§ã¯ã€å¼•æ•°ã§æŒ‡å®šã•ã‚ŒãŸãƒ•ã‚©ãƒ¼ãƒžãƒƒãƒˆæ–‡å—列ã«å¾“ã„ã€ãƒ¬ã‚·ãƒ¼ãƒã§ã‚ã‚‹é…列ã®å†…容を文å—列ã«å¤‰æ›ã—ãŸã‚‚ã®ã‚’è¿”ã—ã¾ã™ã€‚ 本æ¥ã§ã‚ã‚Œã°ã€é…列ã®è¦ç´ ã®ä¸ã« taint フラグãŒç«‹ã£ã¦ã„ã‚‹ã‚‚ã®ãŒå«ã¾ã‚Œã¦ã„ã‚Œã°ã€è¿”ã™æ–‡å—列ã«ã‚‚ãã‚ŒãŒä¼æ’ã—㦠taint フラグãŒç«‹ã¤ã¹ãã§ã™ã€‚ ã¾ãŸã€ãã®é€†ã‚’è¡Œ
Ruby 2.6.0-preview2 Released
Posted by naruse on 31 May 2018 Ruby 2.6.0ã«å‘ã‘ãŸäºŒå›žç›®ã®ãƒ—レビューã§ã‚ã‚‹ã€Ruby 2.6.0-preview2ãŒãƒªãƒªãƒ¼ã‚¹ã•ã‚Œã¾ã—ãŸã€‚ Ruby 2.6.0-preview2ã¯ã€é‡è¦ãªæ–°æ©Ÿèƒ½ã§ã‚ã‚‹JITã‚’å«ã‚€ãŸã‚ã€ä¾‹å¹´ã‚ˆã‚Šã‚‚早期ã«ãƒªãƒªãƒ¼ã‚¹ã™ã‚‹ã“ã¨ã«ã—ã¾ã—ãŸã€‚ ãã®ä¸€éƒ¨ã‚’以下ã«ç´¹ä»‹ã—ã¾ã™ã€‚ JIT Ruby 2.6ã§ã¯JIT (Just-in-time) コンパイラãŒå°Žå…¥ã•ã‚Œã¾ã—ãŸã€‚ JITコンパイラã¯ã‚らゆるRubyプãƒã‚°ãƒ©ãƒ ã®å®Ÿè¡Œã‚’高速化ã™ã‚‹ã“ã¨ã‚’目的ã¨ã—ã¦ã„ã¾ã™ã€‚ 他言語ã®ä¸€èˆ¬çš„ãªJITコンパイラã¨ç•°ãªã‚Šã€Rubyã®JITコンパイラã¯C言語ã®ã‚½ãƒ¼ã‚¹ã‚³ãƒ¼ãƒ‰ã‚’ファイルã¨ã—ã¦ãƒ‡ã‚£ã‚¹ã‚¯ã«æ›¸ãã€é€šå¸¸ã®Cコンパイラを用ã„ã¦ãƒã‚¤ãƒ†ã‚£ãƒ–コードã«å¤‰æ›ã™ã‚‹ã“ã¨ã§JITコンパイルを行ã†ã¨ã„ã†æ‰‹æ³•ã‚’用ã„ã¦ã„ã¾ã™ã€‚(å‚考: MJIT organization by V
New Class Naming Rules in Ruby
New Class Naming Rules in RubyThere were 26 valid characters. Now there are 1,853! In Ruby 2.5 and prior: It’s been a longstanding rule in Ruby that you must use a capital ASCII letter as the first character of a Class or Module name. This limited you to just these 26 characters: ABCDEFGHIJKLMNOPQRSTUVWXYZ New in Ruby 2.6: In Ruby 2.6, non-ASCII upper case characters are allowed. By my count, that
Ruby 2.6 preview 1: Timing JIT — Engineering Blog
The new Ruby 2.6 preview 1 has JIT capability built in. Awesome! But it's still early. They say JIT doesn't help on Rails apps, for instance. Purely by coincidence, I happen to write a big concurrent Rails-based benchmark, which Takashi was hoping to see JIT results for. And I'm freshly back to part-time work after paternity leave. So how is its performance for Rails apps? Let's find out. (Disclai
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