Breaking Change

#SFBLJOH$IBOHF <ഁյతมߋ> $MPTJOH,FZOPUF גࣜձࣾ%3&$0. !LPJD&4. *OD 4BU ฏ੒3VCZձٞ

!LPJD,PJDIJ*50 w 3VCP$PQ$PNNJUUFS w "30SBDMFFOIBODFE BEBQUFS$PNNJUUFS w $PNNVOJUZ.BOBHFS BU&4. *OD

8SJUF 3FWJFX $PEF&WFSZ%BZ

#VOEMFS 1SZ 34QFD 3VCP$PQ CZFCVH 3VCZ,BJHJ %3&$0.͞Μϒʔεʹͯ

044ίϛϡχςΟͱͷڞੜΛࢧԉ Support coexistence with OSS community

͋ͱ͸෼͔Γ·͢Ͷʁ ࠾༻ ೥Ҏ্ͷ3BJMTΞϓϦ։ൃͷ࣮੷&4. l3BJMT044Λ௨͡੒௕͍ͨ͠ϓϩάϥϚʔz @koicまでどうぞ

IUUQTIFJTFJSCHJUIVCJPLBJHJ

#SFBLJOH$IBOHF <ഁյతมߋ> $MPTJOH,FZOPUF גࣜձࣾ%3&$0. ,PJDIJ*50&4. *OD 4BU ฏ੒3VCZձٞ

͜ͷߨԋͰಘΒΕΔ͔΋͠Εͳ͍͜ͱ w ςετͱCVOEMFVQEBUFͷॏཁ ੑͷ࠶ೝࣝ w 3VCP$PQͷࣼΊ্ͷ࢖͍ํ w ࢲ͔Βݟͨ044ͷੈք؍ w ഁյతมߋͷͨΊʹ͋ͳ͕ͨͰ͖Δ
͔΋͠Εͳ͍͜ͱ

w ഁյతมߋͱ͸Կ͔ʁ w ެ෍ࡁΈΠϯλϑΣʔεΛ࢖͏ w ඇਪ঑ܯࠂόʔδϣϯΛܦ༝͢Δ w ഁյతมߋΛ৐Γӽ͑Δ w ΦʔϓϯιʔείϛϡχςΟ
ΞδΣϯμ

ഁյతมߋ ͱ͸Կ͔ʁ

CVHTSVCZMBOHPSHJTTVFT 3FBMLFZXPSEBSHVNFOU

IUUQTXXXSVCZMBOHPSHKBOFXTSVCZQSFWJFXSFMFBTFE

To be continued…

CVHTSVCZMBOHPSHJTTVFT 3FHFYQ\NBUDI NBUDI ^XJUIBOJMBSHVNFOUBSF EFQSFDBUFEBOEXJMMSBJTFB5ZQF&SSPSJO3VCZ

҆ఆ൛ͷ3VCZ[ % rbenv shell 2.6.5 && ruby -e 'p /re/.match?(nil)'
false

։ൃ൛ͷ3VCZ % rbenv shell 2.6.5 && ruby -e 'p /re/.match?(nil)'
false % rbenv shell 2.7.0-preview2 && ruby -e 'p /re/.match? (nil)' Traceback (most recent call last): 1: from -e:1:in `<main>' -e:1:in `match?': no implicit conversion of nil into String (TypeError) QSFWJFX

։ൃ൛ͷ3VCZ % rbenv shell 2.6.5 && ruby -e 'p /re/.match?(nil)'
false % rbenv shell 2.7.0-preview2 && ruby -e 'p /re/.match? (nil)' Traceback (most recent call last): 1: from -e:1:in `<main>' -e:1:in `match?': no implicit conversion of nil into String (TypeError) % rbenv shell 2.7.0-preview3 && ruby -e 'p /re/.match? (nil)' -e:1: warning: given argument is nil; this will raise a TypeError in the next release false QSFWJFX

IUUQTCMPHBHJMFFTNDPKQFOUSZSBJMTPTTQBUDINFFUVQ ύονձͰ΋࿩୊ʹ

IUUQTUXJUUFSDPNLBNJQPTUBUVT

IUUQTUXJUUFSDPNOBMTITUBUVT

IUUQTUXJUUFSDPNZVLJIJSP@NBU[TUBUVT

IUUQTCVHTSVCZMBOHPSHJTTVFT 3FWFSU

ഁյతมߋ ͱ͸Կ͔ʁ

w CVOEMFVQEBUFޙ w 3VCZͷόʔδϣϯΛ͋͛ͨޙ w ͦͷ΄͔ϛυϧ΢ΣΞΛߋ৽ͨ͠ޙ ར༻ίʔυ΁ͷޙํޓ׵Λͳ͘͢มߋ ҎલͱҟͳΔ݁ՌΛҾ͖ى͜͠͏Δมߋ ‑

w ެ։͞Εͨ"1*ͷ໊લ͕มΘΔ w ެ։͞Εͨ"1*ͷҾ਺͕มΘΔ w ެ։͞Εͨ"1*ͷ໭Γ஋͕มΘΔ w ެ։͞Εͨ"1*ͷৼΔ෣͍͕มΘΔ w όάpYͱඇޓ׵มߋ͸ظ଴ͷҧ͍
ͲΜͳഁյతมߋ͕͋Δͷ͔ʁ

ެ։"1* ඇެ։"1*

%FQFOEPO 1VCMJTIFE"1* 公開APIへの依存

IUUQTCMJLJKBHJUIVCJP1VCMJTIFE*OUFSGBDF

0CKFDU0SJFOUFE 1SPHSBNJOH

҆ఆʹґଘͤΑ SDP: Stable Dependency Principle

w ιϑτ΢ΣΞ͸มԽ͠ଓ͚Δ w ҆ఆͨ͠"1*ͱෆ҆ఆͳ"1*͕͋Δ w ઃܭ͸׬શʹݻఆͰ͖ͳ͍ͨΊɺෆ ҆ఆΛڐ͢࢓૊Έ͕ඞཁ w ෆ҆ఆͳ"1*͕ѱ͍ͷͰ͸ͳ͘ɺෆ ҆ఆͳ"1*ʹґଘ͢Δͷ͕ѱ͍͜ͱ
4%1҆ఆґଘͷ๏ଇ

w ಺෦తͳ"1*ͱ໌ࣔ͞Ε͍ͯΔ"1* ͸࢖Θͳ͍ w 3BJMTʹ͓͍ͯ͸ϝιουίϝϯτ ͕͋ΔEPDʹ൓ө͞ΕΔϝιου͕ ެ։"1*ͱͳΔ w ඇެ։"1*ʹґଘ͢ΔͱͲ͏ͳΔʁ 3VCZ3VCZPO3BJMT

%FQFOEPO *OUFSOBM"1* ⾮公開APIへの依存

8JUIHSFBUQPXFS DPNFTHSFBU SFTQPOTJCJMJUZ ⼤いなる⼒には⼤いなる責任が伴う

MTFHBMZBSE SVCZ@QBSTFSSCBEEWPJE@TUNUUPJOTFSU@DPNNFOUT MPPQ

SVCZSVCZ!FGCDB

3FNPWFBOJOUFSOBM"1* ಺෦"1* શ࡟আ

SFRVJSFFSSPS ಺෦"1*

಺෦"1*΁ͷґଘΛճආ͢Δ

SBJMTSBJMT 3FNPWFVTFMFTT A.JHSBUPSTDIFNB@NJHSBUJPOT@UBCMF@OBNFA

಺෦"1*

಺෦"1* 3BJMTͰ͸ϝιουίϝϯτ͕ه͞Ε͍ͯͳ͍΋ͷ͸ඇެ։ "1*ͱ͍͏ѻ͍ͱͳ͍ͬͯΔ

࡟আࡁ"1* ͷஔ׵

% ag 'Migrator\.schema_migrations_table_name' `ghq root` HIR؅ཧͷMPDBMSFQPΛ۲ࢗ͠ݕࡧ Ͳ͏ͩΖ͏ʁ

% ag 'Migrator\.schema_migrations_table_name' `ghq root` HIR؅ཧͷMPDBMSFQPΛ۲ࢗ͠ݕࡧ ݁Ռͱ͍͔ͯͭ͘͠ώοτͨ͠ ‑

಺෦"1*΁ͷґଘͷ࣮ྫ IUUQTHJUIVCDPNFTNJODBEIPRQVMM

಺෦"1*΁ͷґଘͷ࣮ྫ IUUQTHJUIVCDPNBNBUTVEBEBUBCBTF@SFXJOEFSQVMM

w ಺෦"1*͸ϥΠϒϥϦఏڙऀ͕࣮૷ ʹԠͯ͡มߋ͠͏Δ w ͭ·Γಥવͦͷ"1*͕ͳ͘ͳͬͯ /P.FUIPE&SSPS͕ى͖ΔͳͲ w ྫ͑͹3BJMTΛΞοϓσʔτͨ͠Β ະରԠґଘ(FNͰΤϥʔ͕ى͖Δ %PO`UEFQFOEPOJOUFSOBM"1*

ඇਪ঑ܯࠂͷఏҊ͕͞ΕΔ 削除の前に⾮推奨警告しませんか。バックリンクに⽰された多くのGemが使⽤してる。

w ຊདྷ͸಺෦"1*ʹґଘ͢Δͷ͕ྑ͘ ͳ͍͕ɺใࠂ݅਺͕ͦΕͳΓʹ͋ͬ ͨͱϝϯςφʔʹײ͡ΒΕͨ໛༷ w ͓ͦΒ͔͘ͳΓಛघέʔε w ҰํͰެ։"1*΁ͷมߋ͸Ϣʔβʔ ӨڹΛߟྀ͢΂͖ ඇਪ঑ܯࠂ

ඇਪ঑ܯࠂͷ௥Ճ IUUQTHJUIVCDPNSBJMTSBJMTQVMM

ඇਪ঑ܯࠂʹΑΔઆ໌ IUUQTHJUIVCDPNKSVCZBDUJWFSFDPSEKECDBEBQUFSQVMM

w ॲཧܥ΍ϥΠϒϥϦ͕ܯࠂΛग़͍ͯ ΔόʔδϣϯΛܦ༝ͯ͠ɺܯࠂΛ௵ ͔ͯ͠Β࣍ͷόʔδϣϯʹ্͛Δ w ͳΔ΂͘ϋΠδϟϯϓΛආ͚Δ w ೔ࠒ͔ΒCVOEMFVQEBUFΛ͠ ͯɺςετΛ࣮ߦ͢Δ ΞϓϦέʔγϣϯ։ൃऀͷᅂΈ

ഁյతมߋ ͱ͸Կ͔ʁ ෼͔Γ· ͔ͨ͠ʁ

w ͦ΋ͦ΋ιϑτ΢ΣΞ։ൃ͸೉͍͠ w ΋ͬͱ࢖͍΍͍ͩ͢Ζ͏ઃܭ͕͋Ε ͹ɺͰ͖Ε͹ͦ͏͍ͨ͠ ᷤ౻ w ιϑτ΢ΣΞ͸ਓ͕࡞͍ͬͯΔ w
ͭ·Γެ։"1*Ͱ΋ᷤ౻ͷ຤ɺഁյ ͞ΕΔ ͢Δ ͜ͱ͕͋Δ ެ։"1*Λ࢖͑͹໰୊͸ى͖ͳ͍ʁ

'BLFS #SFBLJOH$IBOHF #Z&YBNQMF

w ͋Δ೔ɺ3BJMTΞϓϦέʔγϣϯΛ CVOEMFVQEBUFͯ͠ςετΛ࣮ ߦͨ͠ΒಥવͷΤϥʔ͕ى͖Δ 'BLFSͰى͖ͨഁյతมߋ

'BLFSZ[ Faker::Address.zip_code('NY') # => "25771"

'BLFS[ Faker::Address.zip_code('NY') % bundle exec ruby example.rb Traceback (most recent
call last): 1: from example.rb:3:in `<main>' /Users/koic/.rbenv/versions/2.6.3/lib/ruby/gems/ 2.6.0/gems/faker-2.1.2/lib/faker/default/ address.rb:32:in `zip_code': wrong number of arguments (given 1, expected 0) (ArgumentError)

'BLFS[ ղܾ൛ -Faker::Address.zip_code('NY') +Faker::Address.zip_code(state_abbreviation: 'NY') LXBSHT ʹ͢Δ

w ࣗ෼ͷ৔߹͸ॳखʹHFNEJGGΛ࢖ͬ ͯࠩ෼Λ֬ೝͨ͠Γɺίϛοτϝοηʔ δʹ࢒ͨ͠Γ͍ͯ͠ΔͷͰͦͷϦϯΫ ΛݟΔ VQTUSFBNͷࠩ෼ΛݟΔ % gemdiff (snip) faker:
2.8.1 > 2.8.0 https://github.com/faker-ruby/faker/compare/ v2.8.0...v2.8.1

มߋཤྺͱ ͍͏ཏ਑൫ IUUQKBXJLJQFEJBPSHXJLJ&""&""&##&&##"NFEJB'JMF$BOUJOP1MBOJTQIFSFQOH IUUQTHJUIVCDPNGBLFSSVCZGBLFSCMPC W$)"/(&-0(NEJNQPSUBOUOPUF

w "SHVNFOU&SSPS͸ݪҼͱͯ͠෼͔ Γ΍͍͕͢ɺͲͷΑ͏ͳҾ਺͕ਖ਼͍͠ ͔෼͔Βͳ͔ͬͨ w QPTJUJPOBMҾ਺͔ΒΩʔϫʔυҾ਺΁ ͷมߋͰΩʔϫʔυ͕͙͢ʹ෼͔Βͳ ͔ͬͨ w "1*ͷҾ਺෼
໰୊఺

w ࣗ෼͕౿Μͩ໘౗ͳ͜ͱ͸ɺଞͷਓ ʹͱͬͯ΋໘౗͔΋͠Εͳ͍ w (FNͷଟ͘͸3VCZͰॻ͔Ε͍ͯ Δ w ύονΛૹΔͷʹࢧোͷ͋ΔϥΠη ϯεʹग़ձͬͨ͜ͱ͕ͳ͍ ෆศͩͱࢥͬͨΒఏҊ͢Ε͹ྑ͍

w ΞοϓάϨʔυޙͷ࣮ߦ࣌Ͱ͙͢ʹ Τϥʔʹ͢ΔͷͰ͸ͳ͘ɺઌʹͲͷ Α͏ͳΠϯλϑΣʔεʹมΘΔͷ͔ ܯࠂΛग़͢ ղܾҊͱͯ͠ߟ͑ͨ͜ͱ

GBLFSSVCZGBLFS "EEXBSOGPSQPTJUJPOBMBSHVNFOUTXIFOVTJOH 'BLFS

$POUFYU Կނඞཁ͔

)PX ࣮૷ϙΠϯτ

.FSJU ͲΜͳಘ͕

&YBNQMF ࣮ྫ

ίʔυEJGG جຊతͳมߋ ޓ׵*'ͷఏڙ

ίʔυEJGG جຊతͳมߋ چ"1*΁ͷܯࠂ

ίʔυEJGG جຊతͳมߋ w legacy_sourceͱͯ͠ݩͷҾ਺Ͱ΋ ड͚ೖΕΔΑ͏ʹ͢Δ w legacy_source͕౉͞Εͨ৔߹͸ܯ ࠂΛදࣔͯ͠ɺͦͷ஋Λ༏ઌͯ͠࢖͏

ͦΕΛ"1*

def saying(legacy_source = NOT_GIVEN, source: nil) if legacy_source != NOT_GIVEN
warn_with_uplevel 'Passing `source` with the \ 1st argument of `Dune.saying` is deprecated. \ Use keyword argument like \ `Dune.saying(source: ...)` instead.', uplevel: 1 source = legacy_source end end "1*෼ͷରԠͱ͸

warn_with_uplevel 'Passing `source` with the \ 1st argument of `Dune.saying` is deprecated. \ Use keyword argument like \ `Dune.saying(source: ...)` instead.', uplevel: 1 source = legacy_source end end ϝιου໊ "1*෼ͷରԠͱ͸

warn_with_uplevel 'Passing `source` with the \ 1st argument of `Dune.saying` is deprecated. \ Use keyword argument like \ `Dune.saying(source: ...)` instead.', uplevel: 1 source = legacy_source end end Ҿ਺໊ "1*෼ͷରԠͱ͸

warn_with_uplevel 'Passing `source` with the \ 1st argument of `Dune.saying` is deprecated. \ Use keyword argument like \ `Dune.saying(source: ...)` instead.', uplevel: 1 source = legacy_source end end Ҿ਺ͷ਺ "1*෼ͷରԠͱ͸

warn_with_uplevel 'Passing `source` with the \ 1st argument of `Dune.saying` is deprecated. \ Use keyword argument like \ `Dune.saying(source: ...)` instead.', uplevel: 1 source = legacy_source end end σϑΥϧτ஋ "1*෼ͷରԠͱ͸

warn_with_uplevel 'Passing `source` with the \ 1st argument of `Dune.saying` is deprecated. \ Use keyword argument like \ `Dune.saying(source: ...)` instead.', uplevel: 1 source = legacy_source end end ܯࠂจ "1*෼ͷରԠͱ͸

"1* ख࡞ۀ͸ ͭΒ͍

ୡਓϓϩάϥϚʔ΁ͷجૅٕज़ ςεςΟϯά %FWFMPQFS5FTUJOH ࣗಈԽ 1SPKFDU"VUPNBUJPO όʔδϣϯ؅ཧ 7FSTJPO$POUSPM

w LXBSHTʹมΘΔલͷ'BLFSͷίϛο τϋογϡΛखʹೖΕΔ w खݩͷ'BLFSϦϙδτϦΛͦͷόʔδϣ ϯʹ໭͢ w 'BLFSελΠϧ΁ͷҠߦΠϯλϑΣʔ εʹBVUPDPSSFDU͢Δ$PQΛ࡞Δ w
'BLFSʹ$PQΛద༻ͨ͠ύονΛૹΔ ͜ͷඇਪ঑ܯࠂΛ࡞ΔͨΊߦͬͨ͜ͱ

w 3VCP$PQ͸ظ଴͍ͯ͠ͳ͍ελΠ ϧͷίʔυΛظ଴͍ͯ͠Δίʔυʹ ࣗಈमਖ਼͢ΔػೳΛඋ͍͑ͯΔ w 3VCP$PQ͕ఏڙ͍ͯ͠Δ$PQΫ ϥεΛܧঝ͢Δ͜ͱͰΦϦδφϧͷ $PQΛ࡞Δ͜ͱ͕Ͱ͖Δ 3VCP$PQ͓͞Β͍

w ϩʔΧϧϦϙδτϦͷΈͷϒϥϯν Ͱॻ͖ͳ͙ͬͨ΋ͷΛൃ۷͠·ͨ͠ w ͲΜͳҠߦεΫϦϓτΛॻ͍͍ͯͨ ͷ͔ൈਮͯ͠งғؾΛ఻͑·͢ w ϝϯςφϯεΛ΄΅ߟ͍͑ͯͳ͍ɺ γϣοτͷίʔυʹͯޚ༰ࣻئ ΦϒδΣΫτࢦ޲lεΫϦϓτzݴޠ

ԶDPQ͕ظ଴͢Δ࢓༷ # bad # def email( # name: nil, #
separators: nil # ) # # good # def email( # legacy_name = NOT_GIVEN, # legacy_separators = NOT_GIVEN, # name: nil, # separators: nil # ) ΩʔϫʔυҾ਺ͷΈ Ͱߏ੒͞Ε͍ͯΔ

CBEέʔεΛଊ͑Δ࣮૷ྫ class BreakingChangeArguments < Cop def on_def(node) return unless node.arguments.all?
{|argument| argument.kwarg_type? || argument.kwoptarg_type? } node.arguments.reverse_each do |argument| message = format( MSG, name: argument.children.first ) add_offense(argument, message: message) end end end

{|argument| argument.kwarg_type? || argument.kwoptarg_type? } node.arguments.reverse_each do |argument| message = format( MSG, name: argument.children.first ) add_offense(argument, message: message) end end end EFGϊʔυͷॲཧ

{|argument| argument.kwarg_type? || argument.kwoptarg_type? } node.arguments.reverse_each do |argument| message = format( MSG, name: argument.children.first ) add_offense(argument, message: message) end end end ܯࠂΛग़͢"1*

{|argument| argument.kwarg_type? || argument.kwoptarg_type? } node.arguments.reverse_each do |argument| message = format( MSG, name: argument.children.first ) add_offense(argument, message: message) end end end ܯࠂ͠ͳ͍৚݅

{|argument| argument.kwarg_type? || argument.kwoptarg_type? } node.arguments.reverse_each do |argument| message = format( MSG, name: argument.children.first ) add_offense(argument, message: message) end end end ܯࠂ͠ͳ͍৚݅ ϊʔυͷλΠϓ % ruby-parse -e 'def do_something(foo:, bar: 1); end' (def :do_something (args (kwarg :foo) (kwoptarg :bar (int 1))) nil)

class BreakingChangeArguments < Cop def on_def(node) return unless node.arguments.all? {|argument|
argument.kwarg_type? || argument.kwoptarg_type? } node.arguments.reverse_each do |argument| message = format( MSG, name: argument.children.first ) add_offense(argument, message: message) end end end ܯࠂ͠ͳ͍৚݅ % ruby-parse -e 'def do_something(foo:, bar: 1); end' (def :do_something (args (kwarg :foo) (kwoptarg :bar (int 1))) nil) CBEέʔεΛଊ͑Δ࣮૷ྫ ϊʔυͷλΠϓ

CBEέʔεΛࣗಈमਖ਼͢Δ࣮૷ྫ def autocorrect(node) kwarg = node.children.first argument_index = node.parent.parent.arguments.map
{|argument| argument.children.first }.index(kwarg) + 1 index = case argument_index when 1; '1st' when 2; '2nd' when 3; '3rd' else "#{argument_index}th" end

{|argument| argument.children.first }.index(kwarg) + 1 index = case argument_index when 1; '1st' when 2; '2nd' when 3; '3rd' else "#{argument_index}th" end ࣗಈमਖ਼ ΁ͷίʔϧόοΫ ఆٛ

{|argument| argument.children.first }.index(kwarg) + 1 index = case argument_index when 1; '1st' when 2; '2nd' when 3; '3rd' else "#{argument_index}th" end LXBSHͷ ϊʔυ

{|argument| argument.children.first }.index(kwarg) + 1 index = case argument_index when 1; '1st' when 2; '2nd' when 3; '3rd' else "#{argument_index}th" end LXBSHͷ Ҿ਺Ґஔ

CBEέʔεΛࣗಈमਖ਼͢Δ࣮૷ྫ legacy_argument = "legacy_#{kwarg}" class_name = find_class_name(node) method_name =
node.parent.parent.method_name condition += <<-RUBY if #{legacy_argument} != NOT_GIVEN warn_with_uplevel 'Passing `#{kwarg}` with the #{index} argument of `#{class_name}.#{method_name}` is deprecated. Use keyword argument like `#{class_name}.#{method_name} (#{kwarg}: ...)` instead.', uplevel: 1 #{kwarg} = #{legacy_argument} end RUBY

node.parent.parent.method_name condition += <<-RUBY if #{legacy_argument} != NOT_GIVEN warn_with_uplevel 'Passing `#{kwarg}` with the #{index} argument of `#{class_name}.#{method_name}` is deprecated. Use keyword argument like `#{class_name}.#{method_name} (#{kwarg}: ...)` instead.', uplevel: 1 #{kwarg} = #{legacy_argument} end RUBY ޓ׵ม਺ͷ࡞੒

node.parent.parent.method_name condition += <<-RUBY if #{legacy_argument} != NOT_GIVEN warn_with_uplevel 'Passing `#{kwarg}` with the #{index} argument of `#{class_name}.#{method_name}` is deprecated. Use keyword argument like `#{class_name}.#{method_name} (#{kwarg}: ...)` instead.', uplevel: 1 #{kwarg} = #{legacy_argument} end RUBY private def find_class_name(node) if node.class_type? return node.identifier.source end find_class_name(node.parent) end

node.parent.parent.method_name condition += <<-RUBY if #{legacy_argument} != NOT_GIVEN warn_with_uplevel 'Passing `#{kwarg}` with the #{index} argument of `#{class_name}.#{method_name}` is deprecated. Use keyword argument like `#{class_name}.#{method_name} (#{kwarg}: ...)` instead.', uplevel: 1 #{kwarg} = #{legacy_argument} end RUBY ࣗಈमਖ਼ίʔυͷ ஔ׵จࣈྻ

CBEέʔεΛࣗಈमਖ਼͢Δ࣮૷ྫ lambda do |corrector| corrector.insert_before( arguments_range(node), "#{legacy_argument} = NOT_GIVEN,
" ) corrector.insert_before( node.parent.parent.children.last.source_range, condition ) end

" ) corrector.insert_before( node.parent.parent.children.last.source_range, condition ) end मਖ਼ίʔυ΁ ͷஔ׵

" ) corrector.insert_before( node.parent.parent.children.last.source_range, condition ) end ޓ׵Ҿ਺ͷૠೖ

" ) corrector.insert_before( node.parent.parent.children.last.source_range, condition ) end ܯࠂ৚݅ͷૠೖ

͓Ϛʔδ

Ϣʔβʔͷ൓Ԡ Feedback

GBLFSSVCZGBLFS USJHHFSTEFQSFDBUJPOXBSOJOHTGSPNJOTJEFUIF HFN

⾮推奨警告の量が半端なくて⼤変だったよ

w ,ಥવͷΤϥʔΛճආ͢Δඇਪ঑ ܯࠂ͕׆༻͞ΕͨΑ͏Ͱ͋Δ w 1 ͷഁյతมߋΛ௚ܸ͢Δ ͱͭΒͦ͏Ͱ͋Δ w 5ࣗಈमਖ਼ՄೳͳπʔϧΛఏڙ͠ ͯΞοϓάϨʔυ΁ͷ௧ΈΛݮΒ͢
ϑΟʔυόοΫʹରͯ͠ߟ͑ͨ͜ͱ

LPJDSVCPDPQGBLFS "3VCP$PQFYUFOTJPOGPS'BLFS

w ͔ͭͯ34QFD͔Β34QFD΁ ͷҠߦͰ࢖ͬͨ5SBOTQFDʹӨڹ Λड͚ͯ࡞ͬͨ(FN w 'BLFSʹඇਪ঑ܯࠂΛೖΕΔ13Λ ࡞ΔաఔͰ͍ͭͰʹฒߦͯ͠࡞Ζ͏ ͱ͍ͯͨ͠Α͏ͳ ͏Ζ֮͑ Ұܳ͸։ൃΛՃ଎͢Δ

ઌͷ࣮૷ͱࣅͨ Α͏ͳ΋ͷͳͷ Ͱ࣮૷ղઆׂѪ

l (FN͸࡞͚ͬͨͩͰউख ʹ޿·ΔΘ͚Ͱ͸ͳ͘࢖Θ ΕΔͨΊͷͻͱ޻෉ॏཁ !BNBUTVEB

IUUQTXXXNPVOUBJOHPBUTPGUXBSFDPNCMPHBSFPGGFBUVSFTSFBMMZSBSFMZPSOFWFSVTFE

ࢲ͕ࢥ͍͍ͭͨ ͜ͷ՝୊ʹର͠ ࠷ڧͷએ఻ํ๏

VQTUSFBN ʹऔΓࠐΜ Ͱ΋Β͏

GBLFSSVCZGBLFS *ODMVEFSVCPDPQGBLFSBVUPDPSSFDUJOEFQSFDBUJPO

$POUFYU લྫΛग़͢

)PX ղܾࡦ

&YBNQMF ࣮ྫ

.FSJU ͲΜͳಘ͕

৺഑ͩͬͨ఺

͓Ϛʔδ

ͦͷޙ Afterwards

GBLFSSVCZGBLFS 6TJOHLXBSHTGPSNFUIPETUIBUBDDFQUPOMZPOF BSHVNFOUJTJOF⒏DJFOU

引数ひとつにkwargsはやりすぎじゃね？

8*1GPS'BLFS

8*1GPS'BLFS To be continued…

w ࠷ॳ͔Βऑ఺ͷͳ͍ઃܭΛ͢Δͷ͸೉͍͠ w ιϑτ΢ΣΞΛΑΓྑ͍ܗʹ͢ΔͨΊʹɺࢭΉΛ ಘͣޙํޓ׵Λؾʹ͔͚ͭͭ΋ఘΊΔ৔߹͕͋Δ w CVOEMFVQEBUFͰখ͞ͳϦϓϨʔεΛ܁Γฦ ͢͜ͱͰେ͖ͳϦϓϨʔεΛ๷͙ w มߋൣғ͕ڱ͍ํ͕ݪҼͷಛఆ͕༰қ
w ͋ͳͨͱ·ΘΓ͸ݹ͍όʔδϣϯ͔৽͍͠όʔδϣ ϯͲͪΒΛ࢖͏ͷ͕޷ΈͰ͔͢ʁ ഁյతมߋΛӽ͑Δ

όʔδϣϯӽ͑ lޙੈʹ࢒͢΋ͷz ະདྷ΁

w ͋ͳͨʹΑͬͯෆඞཁ͔ͩͬͨ΋͠Εͳ͍ ഁյతͳมߋΛࢭΊΔ͜ͱ͕Ͱ͖Δ͔΋͠ Εͳ͍ w ͋ͳͨʹΑͬͯഁյతͳมߋ΁ͷμϝʔδ Λ؇࿨Ͱ͖Δ͔΋͠Εͳ͍ w ·ͣ͸खݩͷඇਪ঑ܯࠂΛݟͯΈΑ͏ w
຤͸ΈΜͳͰ3VCZ΁ͷΞοϓ άϨʔυࣗຫΛ͍͖ͯ͠·͠ΐ͏ ͋ͳ͕ͨίϛϡχςΟ

l ίϛϡχςΟͱ͸୭͔ɻ΋ͪΖ Μɺ͋ͳͨͷ͜ͱͩɻ͋ͳ͕ͨ ίϛϡχςΟͰ͋ΓɺͦΕҎ֎ ʹίϛϡχςΟ͸͍ͳ͍ɻ͋ͳ ͨͷΑ͏ͳਓʑͷू·ΓΛɺί ϛϡχςΟͱݺͿͷͩɻ IUUQTNBHB[JOFSVCZJTUOFUBSUJDMFT'PSF8PSEIUNM Community is
yourself

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