rubykaigi2014-ruby-removed-features ===================================

1. Ruby考古学消された機能編ArchaeologyofRuby: RemovedFeatures Kazuhiro NISHIYAMA RubyKaigi2014 2014/09/19

2. Selfintroduction oneofRubyCommitters Mr.fixtypo(byChikanaga) IuseRubysince1.4

3. Agenda リリースに⼊った後、消された機能 Somefeaturesremovedafterrelease 開発版のみに⼊っていた機能 Somefeaturesonlyindevelopmentbranch

4. SafeLevel isobsoletesince 2.1.0 不完全なSandBox SafeLevel自体の削除の話も何度かあった

5. Safelevel Feature#8468Remove $SAFE MatzagreedatGitHubTokyo drinkup(on2013) tDiary,whichistheonly applicationusing$SAFE==4, alsoagreed isafail-safefeatureto detectbugsofapplications

6. SafeLevel isobsoletesince 2.1.0 raiseArgumentError

7. since1.9.1

8. isdeprecatedsince 2.1.0 itsbehaviorissameastaint

9. from securityreason sameas doesnot containsince1.9.2 use instead

10. fromtoEncoding (m17n) #=nil#warning: variable$KCODEisno longereffective #warning:variable $KCODEisnolonger effective;ignored

11. Regexpoptions Regexpliteraloptions (remains):

13. (ignorecase) ruby1.8.7:warning: modifying$=isdeprecated ruby1.9.3:warning:variable $=isnolongereffective; ignored

14. between1.6.7and1.8.0 →

15. ! →

17. →!#

18. →$%!#

19. ! →!#

20. until1.8 ' # :をつけられる隠し機能の削除

22. )(recommend) (

24. )(deprecated) Ruby本体のメソッド名は出来るだけ三単現のsを付けない

25. Agenda リリースに⼊った後、消された機能 Somefeaturesremovedafterrelease 開発版のみに⼊っていた機能Somefeaturesonlyindevelopmentbranch

26. SymbolStringin 2006(1.9.0-dev) SymbolがStringを継承していた時期があった SymbolStringも⽌める。 caseとかでのバグをたくさん⽣んでしまう http://www.rubyist.net/~matz/20061107.html#p03

27. SymbolString(cont.)

28. !#$%

30. $ !#$%

31. 継承は⽌めてもStringに似た扱いは⼊った。

32. between1.8and1.9

33. cannotcallprivate methods

35. * #+,

36. since1.9.1 privateメソッド呼び出し用途が多く影響範囲が広いため元の挙動に

37. Realmulti-value (to̲splat) 1.9.x !

38. # (!= !-)(!= !) svalue,avalue,mvalue e.g..+/

39. Symbol.findin2.2.0-dev Symbol.find(str) -symbolornil Returntherelatedsymbolifthe symbolalreadyexists. Returnnilifnot. revision47543 RemovedbecauseofSymbolGC Ifyoustillwantthis,request againonRedmine.

40. statfsin2.2.0-dev $0

41. and''

42. https://bugs.ruby-lang.org/ issues/9772

44. fortests Rejectat DevelopersMeeting20140517 Japan 「Matz:⾊々込み⼊ってるのでcoreには⼊れないでtest配下へ.欲しいということがあったらgemにしてください.」

45. Conclusion Somefeaturesonlyin developmentbranch Somefeaturescannot introducebecauseof compatibility

rubykaigi2014-ruby-removed-features ===================================

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