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スタイル警察24時 / style police 24h
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Ship Features Fearlessly
Turn features on and off without deploys. Used by thousands of Ruby developers.
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otsuky
December 20, 2019
Technology
430
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スタイル警察24時 / style police 24h
みんなでいいCSS書いていこうなって話
otsuky
December 20, 2019
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Transcript
ελΠϧܯ ࣌ ★ ★ ★ ★ ★ ★ ★ ★
2 େ݄ ༎Ղࢠ ࡀͰԦͷૉ࣭Λ։Ֆͤ͞Δͱ༧ݴΛड͚Δ ˔ ۙگ ˔ ͖ͳ$44ϧʔϧηοτ QPJOUFSFWFOUTOPOF QPTJUJPOTUJDLZ
@yukako_otsuki
3 ࠓಛʹ ৽͍͠͠·ͤΜ
4 $44ͷΛ͠·͢
5 ྑ͍ελΠϧͬͯ ͳΜͩΖ͏
6 ѱ͍ελΠϧͬͯ ͳΜͩΖ͏
7 ϨϏϡʔͷ࣌ʹେʹ͍ͯ͠Δ؍ ύϑΥʔϚϯε ։ൃޮ σβΠϯ࠶ݱੑ ύϑΥʔϚϯε
8 ։ൃޮ
9 The Goals of Good CSS Architecture ϝϯςφϯεੑ ˔ 1SFEJDUBCMF
ʜ༧ଌ͍͢͠ ˔ 3FVTBCMF ʜ࠶ར༻͍͢͠ ˔ .BJOUBJOBCMF ʜอक͍͢͠ ˔ 4DBMBCMF ʜ֦ு͍͢͠ https://philipwalton.com/articles/css-architecture/
10 Predictable ༧ଌ͍͢͠ “༧ଌՄೳͳ$44ɺϧʔϧ͕ظͲ͓Γʹಈ࡞͢Δ͜ͱΛҙຯ ͠·͢ɻ ϧʔϧΛՃ·ͨߋ৽͢Δ߹ɺҙਤ͠ͳ͍αΠτͷ෦ʹ ӨڹΛ༩͑ͯͳΓ·ͤΜɻ
11 Not predictableͳελΠϧ
12 Not predictableͳελΠϧ ˔ ελΠϧΛଧͪফ͍ͯ͠Δ ˔ ηϨΫλʹΫϥεͱλά͕ࠞࡏ͍ͯ͠Δ ˔ Ϋϥε໊ͱݟ͕ͨҰக͠ͳ͍ ˔
ηϨΫλͷৄࡉ͕ೖΓཚΕ͍ͯΔ
13 Reusable “$44ϧʔϧநతͰɺेʹ͞Ε͍ͯΔඞཁ͕͋Γ·͢ɻ ͜ΕʹΑΓɺطʹղܾͨ͠ύλʔϯΛ࠶ίʔσΟϯά͢ Δ͜ͱͳ͘ɺطଘͷύʔπ͔Β৽͍͠ίϯϙʔωϯτΛ͢ ͘ߏஙͰ͖·͢ɻ ࠶ར༻͍͢͠
14 Maintainable “αΠτͰ৽͍͠ίϯϙʔωϯτػೳΛՃɺߋ৽ɺ࠶ஔ͢ Δඞཁ͕͋Δ߹ɺطଘͷ$44ΛϦϑΝΫλϦϯά͢Δඞཁ͕ ͋Γ·ͤΜɻ ίϯϙʔωϯτ9ΛϖʔδʹՃͯ͠ɺͦͷଘࡏ͚ͩͰίϯ ϙʔωϯτ:͕յΕ͍͚ͯ·ͤΜɻ อक͍͢͠
15 Scalable “εέʔϥϒϧͳ$44ɺҰਓ·ͨେنͳΤϯδχΞ ϦϯάνʔϜ͕؆୯ʹཧͰ͖Δ͜ͱΛҙຯ͠·͢ɻ ·ͨɺେͳֶशۂઢΛඞཁͱͤͣʹɺαΠτͷ$44Ξ ʔΩςΫνϟʹ؆୯ʹΞΫηεͰ͖·͢ɻ ֦ு͍͢͠
16 ScalableͳελΠϧʹ͢ΔͨΊʹ ίϯϙʔωϯτઃܭʹΑΓ ؔ৺ͷɾΧϓηϧԽΛߦ͏ ˣ $44JO+4PS$44ઃܭख๏ΛऔΓೖΕΔ
17 σβΠϯ࠶ݱੑ
18 σβΠϯ࠶ݱੑ σβΠϯ௨Γͷݟͨʹͳ͍ͬͯΔ͔
19 σβΠϯ௨Γͷݟͨͱ ϝϯςφϯεੑ ˔ ΟϯυαΠζΛม͑ͨ࣌ ˔ ΟϯυͷॎԣදࣔΛม͑ͨ࣌ ˔ ಈతʹऔಘ͢ΔՕॴʹσβΠϯσʔλҎ֎ͷσʔλ͕ೖ ͖ͬͯͨ࣌
˔ $ISPNFҎ֎ͷϒϥβͰදࣔͨ࣌͠ ˔ ϒϥβͷػೳͰςΩεταΠζΛมߋͨ࣌͠ ˔ ֦େɾॖখදࣔͨ࣌͠
20 σβΠϯ௨Γͷݟͨͱ ϝϯςφϯεੑ ˔ ΟϯυαΠζΛม͑ͨ࣌ ˔ ΟϯυͷॎԣදࣔΛม͑ͨ࣌ ˔ ಈతʹऔಘ͢ΔՕॴʹσβΠϯσʔλҎ֎ͷσʔλ͕ೖ ͖ͬͯͨ࣌
˔ $ISPNFҎ֎ͷϒϥβͰදࣔͨ࣌͠ ˔ ϒϥβͷػೳͰςΩεταΠζΛมߋͨ࣌͠ ˔ ֦େɾॖখදࣔͨ࣌͠ ද่͕ࣔΕͳ͍͔ σβΠφʔ͞Μͷҙਤ͕͖ͪΜͱө͞Ε͍ͯΔ͔
21 ύϑΥʔϚϯε
22 ύϑΥʔϚϯεΛߟྀͨ͠ελΠϧ ϝϯςφϯεੑ ˔ %0.ΛඞཁҎ্ʹਂ͘ͳ͍ ʜϚονϯά͢ΔηϨΫλΛ૯ͨΓͰ୳͢ ˔ ແବͳελΠϧ͕ͳ͍ ʜελΠϧඞཁͳͱ͜Ζʹඞཁͳ͚ͩ ʜϕϯμʔϓϨϑΟοΫεͷ࠷దԽ
˔ ϨϯμϦϯάͷෛՙ͕ߟྀ͞Ε͍ͯΔ ʜϝσΟΞΫΤϦͷ࠷దԽ ʜ$44Ξχϝʔγϣϯͷ࠷దԽ ˔ ηϨΫλ͕࠷దԽ͞Ε͍ͯΔ ʜηϨΫλӈ͔Βࠨর߹͞ΕΔ ʜࢠଙɾؒɾશশηϨΫλͷଟ༻Λආ͚Δ
23 $44JO+4ʹΑΔ Ըܙ
24 $44JO+4ʹΑΔԸܙ ։ൃޮ ύϑΥʔϚϯε ਓ͕ؒࣗΒߟ͑ͳ͚Εͳͯ͘࠷ݶ୲อͰ͖ΔϨϕϧ্͕͕ͬͨ
25 Α͋͘Δ ୁัࣄҊ
26
27 JNQPSUBOU Λࢦఆ͍ͯ͠Δ
28 JNQPSUBOU Λࢦఆ͍ͯ͠Δ ! ৄࡉઃܭͷΧΦεԽ͕ଅਐͯ͠͠·͍·͢ Ͳ͏ͯ͠ͷ߹ίϝϯτʹཧ༝Λڙड़͠·͠ΐ͏
29 ෆཁͳελΠϧ͕ ଘࡏ͢Δ
30 ෆཁͳελΠϧ͕ ଘࡏ͢Δ ! σβΠϯσʔλ͔ΒίϐϖͨελΠϧΛ ͦͷ··͍͚ͬͯ·ͤΜ
31 ྫ֎GMFYCBTJT WBMVF͕zzͷͱ͖ʹ ୯Ґ͕ࢦఆ͞Ε͍ͯΔ
32 ྫ֎GMFYCBTJT WBMVF͕zzͷͱ͖ʹ ୯Ґ͕ࢦఆ͞Ε͍ͯΔ ! ෆཁͳͷॻ͔͔ͳ͍ͷ͕ݪଇͰ͢
33 MJOFIFJHIUʹ ୯Ґ͕ࢦఆ͞Ε͍ͯΔ
34 MJOFIFJHIUʹ ୯Ґ͕ࢦఆ͞Ε͍ͯΔ ! ϒϥβͷػೳͰจࣈΛେ͖ͨ࣌͘͠ʹද่͕ࣔΕ·͢
35 NBSHJO͕ ૬ࡴ͞Ε͍ͯΔ
36 NBSHJO͕ ૬ࡴ͞Ε͍ͯΔ ! मਖ਼ͨ͠Γ࠶ར༻ͨ͠Γ͢Δࡍʹ͏·͍͔͘ͳ͍ݪҼʹͳΓ·͢
37 ࣏҆ҡ࣋ͷ ৬࣭ ͷϧʔϧ
38 IFJHIU͕ܾΊଧͪͰ ࢦఆ͞Ε͍ͯΔ
39 ωΨςΟϒNBSHJO
40 qFYCPYҎ֎Ͱͷԣฒͼ PS(SJE-BZPVU
41 qFYCPYҎ֎Ͱ্Լதԝدͤ PS(SJE-BZPVU
42 BCTPMVUFΛࢦఆ͍ͯ͠Δ ཁૉͷલʹ SFMBUJWFͷཁૉ͕͍ͳ͍
43 ࣏҆ҡ࣋ʹ༗ޮͳ ϕετ ϓϥΫςΟε
44 NBSHJOͷ͖Λଗ͑Δ
45 GPOUTJ[Fͷ ୯ҐzSFNz
46 CPYTJ[JOHCPSEFSCPY Λࢦఆ͢Δ
47 πʔϧΛར༻͢Δ
48 ݸݸ ࡉ͔͍͜ͱ͚ͩͲ
49
50 ͏ʔΜ৮ͬͯͳ͍ϖʔδͷ ελΠϧ͕มΘͬͪΌͬͯΔΑ͓
51 ࣗ·ͩ·ͩ
52 ΈΜͳͰ͍͍$44 ॻ͍͍ͯ͜͏ͳʂ
53