Speaker Deck
Sign in
Sign up
for free
magic-comment-magic.pdf
Koichi ITO
July 18, 2019
Programming
1
280
magic-comment-magic.pdf
平成.rb #6 (
https://heiseirb.connpass.com/event/138210/
)
Koichi ITO
July 18, 2019
Tweet
Share
More Decks by Koichi ITO
See All by Koichi ITO
koic
0
1.7k
koic
1
1.2k
koic
1
210
koic
1
880
koic
4
4.3k
koic
0
1k
koic
2
1.3k
koic
3
2.8k
koic
2
570
Other Decks in Programming
See All in Programming
okuramasafumi
0
200
linyows
2
130
pluu
0
250
bells17
1
390
lcdsmao
2
330
yuukiyo
1
340
s_uryu
3
1k
bmack
0
150
optim
4
300
harshbothra
0
670
mu_zaru
0
230
pi_chan
1
160
Featured
See All Featured
jlugia
215
16k
sachag
447
35k
dougneiner
55
5.2k
edds
55
9.2k
andyhume
60
2.4k
shlominoach
174
7.1k
malarkey
391
60k
brettharned
91
2.8k
marcelosomers
221
14k
mojombo
353
62k
samanthasiow
51
5.9k
aarron
253
36k
Transcript
-PT"OHFMFT
-PT"OHFMFT
-PT"OHFMFT ⏰⚡ 5JNFPVU
*GJUEPFTOPUUJNFEPVU
8FE Magic comment magic ,PJDIJ*50&4. JOD 3VCZ$POG 5IF.JMMFOOJVN#JMUNPSF-PT"OHFMFT My
memorial RuboCop’s issue 2018
5IV Magic comment magic ,PJDIJ*50&4. JOD )FJTFJSC 4IJCVZB +BQBO
My memorial RuboCop’s issue 2018 Reiwa edition
!LPJD w *DPNFGSPN5PLZP +BQBO w *`NXPSLJOHJO&4. JOD w 3VCP$PQDPNNJUUFS w
"30SBDMFFOIBODFE BEBQUFSDPNNJUUFS w 3VCZ,BJHJTQFBLFS w 3VCZ,BJHJ-5FS
"TJNJMBSOPUBUJPOT Ӭ &JXB4ZTUFN.BOBHFNFOU *OD ྩ 3FJXB
"TJNJMBSOPUBUJPOT Ӭ &JXB4ZTUFN.BOBHFNFOU *OD /eiwa/i.match?('Eiwa') #=> true ྩ 3FJXB
"TJNJMBSOPUBUJPOT Ӭ &JXB4ZTUFN.BOBHFNFOU *OD /eiwa/i.match?('Eiwa') #=> true ྩ 3FJXB /eiwa/i.match?('Reiwa')
#=> true
*DPNFGSPNFJXB
044
Support coexistence with OSS community
None
5IJTJTUIF3VCP$PQDPOUSJCVUPSTSBOLJOHUIJTZFBS
5IJTJTUIF3VCP$PQDPOUSJCVUPSTSBOLJOHUIJTZFBS *U`TNF
*XJMMUBMLBCPVU lNBHJDDPNNFOUz XJUI3VCP$PQ UIJTQSFTFOUBUJPO
3VCZIBTUXPNBKPS NBHJDDPNNFOUGFBUVSFT
3VCZIBTUXPNBKPS NBHJDDPNNFOUGFBUVSFT w&ODPEJOHNBHJD DPNNFOU
3VCZIBTUXPNBKPS NBHJDDPNNFOUGFBUVSFT w&ODPEJOHNBHJD DPNNFOU w'SP[FOTUSJOHMJUFSBM NBHJDDPNNFOU
&ODPEJOHNBHJDDPNNFOU # encoding: 'utf-8' # encoding: 'ascii'
&ODPEJOHNBHJDDPNNFOU w5IJTNBHJDDPNNFOUNBLFTpMF FODPEJOHTQFDJpFECZFODPEJOH w*OUSPEVDFEGSPN3VCZ w4DSJQUFODPEJOHJT65'CZ EFGBVMUGSPN3VCZ w5IVTUIJTNBHJDDPNNFOUJT VOOFFEFEBMNPTUDBTFTDVSSFOUMZ
# frozen_string_literal: true # frozen_string_literal: false 'SP[FOTUSJOHNBHJDDPNNFOU
'SP[FOTUSJOHNBHJDDPNNFOU w5IJTNBHJDDPNNFOUNBLFTGSP[FO TUSJOHMJUFSBMXIFUIFSPSOPU w*OUSPEVDFEGSPN3VCZ w3VCZPO3BJMTGSBNFXPSLDPEFT JOUSPEVDFEJUGSPN3BJMT w0OUIFPUIFSIBOE3BJMT HFOFSBUPSTEPFTOPUJODMVEFEJU
5IFSFJTBDPQ SFMBUFEUPUIFTF NBHJDDPNNFOUT
SVCPDPQIRSVCPDPQ 'FBUVSF3FRVFTU8BSOJOWBMJEMPDBUJPOPG DPEJOHQSBHNB
5IJTJTBGFBUVSFSFRVFTUUP3VCP$PQ
SVCPDPQIRSVCPDPQ <'JY>"EEOFXA-JOU0SEFSFE.BHJD$PNNFOUTADPQ
5IJTQVMMSFRVFTUIBTJNQMFNFOUFEUIFGFBUVSF
"CPVUGFBUVSF w5IJTDPQDIFDLTDPEJOH NBHJDDPNNFOUTIPVMECF pSTUMJOF PSOFYUPGTIFCBOH
"CPVUGFBUVSF w5IJTDPQDIFDLTDPEJOH NBHJDDPNNFOUTIPVMECF pSTUMJOF PSOFYUPGTIFCBOH w5IFOFYUTMJEFFYBNQMF FYQFDUFEUPGSP[FOTUSJOH BOE65'FODPEJOH
#BEPSEFS # frozen_string_literal: true # encoding: ascii p [''.frozen?, ''.encoding]
#=> [true, #<Encoding:UTF-8>] *UFYQFDUFE"4$**FODPEJOHCVUBDUVBMMZ65'FODPEJOH
(PPEPSEFS # encoding: ascii # frozen_string_literal: true p [''.frozen?, ''.encoding]
#=> [true, #<Encoding:US-ASCII>]
(PPEPSEFS #!/usr/bin/env ruby # encoding: ascii # frozen_string_literal: true p
[''.frozen?, ''.encoding] #=> [true, #<Encoding:US-ASCII>]
1SFWJPVTMZ UIJTDPQIBE BQSPCMFN
SVCPDPQIRSVCPDPQ -JOU0SEFSFE.BHJD$PNNFOUTSFQPSUTBUMJOFJTOPU BNBHJDDPNNFOU
*UXBTBCVHSFQPSUGSPNNZ3VCZGSJFOE
5IJTJTBWBMJEDPEF # frozen_string_literal: true x = { encoding: Encoding::SJIS }
puts x
"OPGGFOTFPG 3VCP$PQPDDVST # frozen_string_literal: true x = { encoding: Encoding::SJIS
} puts x test.rb:3:1: W: Lint/ OrderedMagicComments: The encoding magic comment should precede all other magic comments.
SVCPDPQIRSVCPDPQ <'JY>'JYBGBMTFQPTJUJWFGPS A-JOU0SEFSFE.BHJD$PNNFOUTA
*PQFOFEBQVMMSFRVFTUUPpYJU
5IJTJTUIFDPSFPGUIF QBUDI
5IFSFXBTBGBMTFQPTJUJWF UPNJTVOEFSTUBOEJOHUIF )BTIOPUBUJPOBTBO FODPEJOHNBHJDDPNNFOU
"TJNJMBSOPUBUJPOT
"TJNJMBSOPUBUJPOT .BHJDDPNNFOU # encoding: ascii
"TJNJMBSOPUBUJPOT .BHJDDPNNFOU # encoding: ascii )BTI x = { encoding:
Encoding::SJIS }
"TJNJMBSOPUBUJPOT .BHJDDPNNFOU # encoding: ascii )BTI x = { encoding:
Encoding::SJIS } ^^^^^^^^^^^^^^^^^^^^^^^^
"TJNJMBSOPUBUJPOT .BHJDDPNNFOU # encoding: ascii ^^^^^^^^^^^^^^^ )BTI x = {
encoding: Encoding::SJIS } ^^^^^^^^^^^^^^^^^^^^^^^^
"TJNJMBSOPUBUJPOT # encoding: ascii ^^^^^^^^^^^^^^^ encoding: Encoding::SJIS ^^^^^^^^^^^^^^^^^^^^^^^^
"TJNJMBSOPUBUJPOT encoding: ascii ^^^^^^^^^^^^^^^ encoding: Encoding::SJIS ^^^^^^^^^^^^^^^^^^^^^^^^
)PXEPZPVMPPLTUIJT encoding: ascii ^^^^^^^^^^^^^^^ encoding: Encoding::SJIS ^^^^^^^^^^^^^^^^^^^^^^^^
5IJTQBUDIDIBOHFTUIF QBUUFSONBUDIPGUIF FODPEJOHNBHJDDPNNFOU UIBUCFHJOOJOHPGMJOF BMXBZTTUBSUTXJUIAA
5IFNBHJDDPNNFOUMJOF BMXBZTTUBSUTXJUIAA encoding: ascii ^^^^^^^^^^^^^^^ encoding: Encoding::SJIS ^^^^^^^^^^^^^^^^^^^^^^^^
5IFNBHJDDPNNFOUMJOF BMXBZTTUBSUTXJUIAA # encoding: ascii ^^^^^^^^^^^^^^^^^ encoding: Encoding::SJIS ^^^^^^^^^^^^^^^^^^^^^^^^
5IJTXBTBGVOOZCVH
4P ZPVDBOPQFO BOJTTVFPSB13 BMXBZT JGZPVpOEBCVHPS BOJTTVF
:PVSJTTVFNBZCF BOZPOFTJTTVF
4FFZPVTPDJBMDPEJOH DPNNVOJUZXPSME XJUI3VCZ
l /PXBZUPMJNJUPVS HPBMT8FMMpOEB SFBTPOUPCFMJFWF 'BDJOH/PWB&SB /PWB&SB
Koichi ITO
koic
okuramasafumi
linyows
pluu
bells17
lcdsmao
yuukiyo
s_uryu
bmack
optim
harshbothra
mu_zaru
pi_chan
jlugia
sachag
dougneiner
edds
andyhume
shlominoach
malarkey
brettharned
marcelosomers
mojombo
samanthasiow
aarron
![#BEPSEFS # frozen_string_literal: true # encoding: ascii p [''.frozen?, ''.encoding]](https://files.speakerdeck.com/presentations/c245edd4944940df9ee7cc9f46d954b9/slide_31.jpg){kind=link}
![(PPEPSEFS # encoding: ascii # frozen_string_literal: true p [''.frozen?, ''.encoding]](https://files.speakerdeck.com/presentations/c245edd4944940df9ee7cc9f46d954b9/slide_32.jpg){kind=link}
