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ファイルを作らずGitにCommit!
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Ship Features Fearlessly
Turn features on and off without deploys. Used by thousands of Ruby developers.
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Takeru Hayasaka
September 28, 2018
Programming
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ファイルを作らずGitにCommit!
タガヤスその7で話したLT資料です
Takeru Hayasaka
September 28, 2018
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Transcript
ϑΝΠϧΛ࡞Βͣ(JU ʹ$PNNJU 5BLFSV)BZBTBLB !UBLFNJP*0 ʢλΨϠεͦͷ̓ʣ 1
ࣄલௐࠪ
(JUͬͨ͜ͱ͋Δਓ ڍखʂ
(JUͷϓϩڍखʂ
ϓϩͷํͪΐͬͱͷ ٳܜʹͳΓ·͢ɾɾɾ
ϓϩ͡Όͳ͍ͷͰؒҧ ͑ͨΒ͝ΊΜͳ͍͞ʼʻ
XIPBNJ w ͔͚ͨ͞Δ !UBLFNJP*0 w ౦ֶӃେֶֶ෦ w ΠϯϑΟχοτϧʔϓͰΞϧόΠτΛͯ͠Δ w
TFNBOUJDTJOGPTFDOFUXPSLʹڵຯ͕͋Γ·͢ w དྷ݄ੜ ͰͳͷͰਓੜͷઌഐํ֤Ґʹ͓͖·͠ ͯඒຯ͍͓͠ञͷҿΈ͔ͨΛืूͯ͠·͢
ΠϯϑΟχοτϧʔϓઋͰ(JU͕ ͑ΔֶੜΞϧόΠτΛืूͯ͠·͢ $.
ۙگ
(JU$IBMMFOHF ͰҐʹͳͬͨ
(JU$IBMMFOHFͱʁ w NJYJ͕ओ࠵ͯ͠Δ(JUʹؔ͢ΔίϯςετɽֶੜΦϯϦʔ w HJUϦϙδτϦʹઃ͚ͨΛνʔϜϫʔΫͰղܾ͍ͯ͠ ͘ڝٕܕͷٕज़Πϕϯτ w ҰԠશࠃ͔ΒॻྨநબͰબΕͨਓͷΈ͕ࢀՃͰ͖ΔΠ ϕϯτɽ
ڝٕڥ w қ͕̍d·Ͱ͋ΓɼϖΞͰߦ͏νʔϜઓͩͬͨ w νʔϜͦͷͰ·͞Εͨॳର໘ͷਓ w ͱΓ͋͑ͣΥʔϜΞοϓ͕ͯΒқͷ͔Β ղ͍͍ͯͬͨɽ w ղ͍ͨΒHJUIVCʹQVTI
w $*ϕʔεͰΛΦʔτδϟονͯ͠Δ
ྫʢงғؾʣ w ίϯϑϦΫτΛͨ͠Γ w ഁଛͨ͠ϑΝΠϧΛम෮ͨ͠ΓɾɾɾͳͲ w ৄ͘͠ެ։ใͰͳ͍ͷͰݴ͑ͳ͍ͷͰ͝ΊΜͳ ͍͞ʼʻ
େձͷงғؾ w ϖΞͰղ͍ͯΔͷͰNBTUFSʹQVTIGΛ͕ͪ͠
େձͷงғؾ w ͓ޓ͍ղ͖ऴΘͬͨͱࢥͬͯΔ
݁Ռ
ޙஊ wޙ͋ΔϦϙδτϦͰʮ13ͷαΠζσΧΠʯͱ ΩϨΒΕͨ wීஈΘͳ͍ΈͦͬͨͷͰઋӺΓա͝͠ ͯԬͰҰധͯ࢝͠ൃͰେֶʹΤΫετϦʔϜొ ߍΛ͢Δ͜ͱʹͳͬͨ
ຊ
ϑΝΠϧΛ࡞Βͣ(JUʹ $PNNJU
Ͱ͖ΔΜͰ͢✊
(JU0CKFDU w HJUJOJUΛͯ͠IPHF͢Δͱੜ·ΕΔHJUPCKFDUTͷதͷ w CMPC w ϑΝΠϧσʔλΛදݱͯ͠Δ w 5SFF w
ϑΥϧμߏΛදݱͯ͠Δ w $PNNJU w USFFͷࢀরͱίϛοτϢʔβʔͱλΠϜελοϓͷදݱ
$PNNJUͷ࡞ΒΕํ wίϛοτͱ͍͏ͷzCMPCzͱ͍͏σʔλ͕zUSFFz ʹඥ͍ͮͯΔ w$PNNJUPCKFDU͕USFFಉ࢜ͷίωΫγϣϯΛҙຯ ͯ͠Δ
None
CMPCͱUSFFͷؔਤ
$PNNJUͱUSFFͷؔਤ
࣮ࡍʹͬͯݟͨ
w ϑΝΠϧΛ࡞Δ w HJUJOJU͢Δ w 0CKFDUͷதQBDL JOGPͷΈ͕ݱஈ֊ʹଘࡏͯ͠Δ $mkdir fugafuga $cd
fugafuga/ $git init > Initialized empty Git repository in fugafuga/.git/ find .git/objects/ > .git/objects/ > .git/objects//pack > .git/objects//info
w HJUIBTIPCKFDUʹύΠϓͯ͠DSFBUFEBUB w PCKFDU*%Λܭࢉͯ͠ϑΝΠϧ͔ΒCMPCΛ࡞͢ΔίϚϯυ w HJUDBUpMFͰνΣοΫɽ͔֬ʹग़དྷͯΔ $ echo 'create data'
| git hash-object -w --stdin > 070f3bd01632c945394b3aac7187a9d91ca4816a $ ls $ git cat-file -p 070f > create data
w HJUVQEBUFJOEFY w XPSLJOHUSFFͷϑΝΠϧΛJOEFYʹొ͢Δ w DINPEͱಉ͡ײ͡ w UFTUUYUͱ͍͏ՍۭͷσʔλΛೖΕͯΔʢଘࡏͯ͠ͳ͍ʣ git update-index
--add --cacheinfo 100644 070f3bd01632c945394b3aac7187a9d91ca4816a test.txt
w HJUXSJUFUSFFΛ͏ w 4UBHFJOHΤϦΞΛUSFFPCKFDUʹॻ͖ग़͢͜ͱ͕Ͱ͖Δ w ·ͩUSFF͕ͳ͍ͱ͖ʹࣗಈͰJOEFY͔ΒUSFFPCKFDUΛ࡞Δ w HJUDBUpMFͰνΣοΫɽ͔֬ʹग़དྷͯΔ $ git
write-tree > c47b19c8b7a3b7724138f73e4cd53efa0f1e9595 $ git cat-file -p c47b > 100644 blob 070f3bd01632c945394b3aac7187a9d91ca4816a test.txt
w DPNNJUUSFFʹύΠϓͯ͠pSTUDPNNJU w $PNNJUΛ࡞ΔίϚϯυ w HJUDBUpMFͰνΣοΫɽ͔֬ʹग़དྷͯΔ $ echo 'first commit'
| git commit-tree c47b > 9ee76e488f2882f12e5fb15d8016e80946ff48dd $ git cat-file -p 9ee76e488f2882f12e5fb15d8016e80946ff48dd > tree c47b19c8b7a3b7724138f73e4cd53efa0f1e9595 > author TakeruHayasaka <
[email protected]
> 1538081510 +0900 > committer TakeruHayasaka <
[email protected]
> 1538081510 +0900 > first commit
·ͱΊ w ίϛοτͱ͍͏ͷzCMPCzͱ͍͏σʔλ͕zUSFFzʹඥ͍ͮͯΔ w $PNNJUPCKFDU͕USFFಉ࢜ͷίωΫγϣϯΛҙຯͯ͠Δ w (JUͱ͍͏ͷ࣮ϨΠϠʔͳදݱΛநԽͯͯ͠ීஈΒ ͍ͬͯΔɽ
w IUUQTHJUTDNDPNCPPLKBW (JU&"&&&# (JU&""&&#&" &"'& w IUUQUBLFJPIBUFOBCMPHDPNFOUSZ ϦϑΝϨϯε