ϒϩάΛॻ͍ͯ΋Βཱ͍͍ͨ৔ͱͯ͠
΍ͬͨ͜ͱɺߟ͍͑ͯΔ͜ͱ  Ր




5FDI
8SJUFST
.FFUVQ

Ϋϥεϝιουגࣜձࣾ
͠Μ΍ 

ࣗݾ঺հ 

ࣗݾ঺հ  ͠Μ΍ TIJOZBB ೥લޙɿதখ4*FSॴଐ࣌୅ʹݸਓϒϩάΛ࢝ΊΔʗษڧձࢀՃϨϙʔτࣥචͰࣾ֎ަྲྀʹੵۃతࢀՃ
೥݄ɿΫϥεϝιουגࣜձࣾʹத్ೖࣾ "84ίϯαϧςΟϯά෦ ϏοάσʔλҊ݅ʹैࣄ
೥݄ɿσʔλΠϯςάϨʔγϣϯ෦ʹҟಈಉ্
೥݄ɿσʔλΞφϦςΟΫεࣄۀຊ෦ʹҟಈಉ্
೥݄ɿΞϥΠΞϯεࣄۀ෦ʹҟಈϞμϯσʔλελοΫ .PEFSO
%BUB
4UBDL ؔ࿈αʔϏεʹैࣄ
ɾΫϥεϝιου೥໨
ɾΫϥεϝιουೖࣾҎདྷʰ೥ؒຊ౤ߘୡ੒ʱΛܧଓத ݱࡏ೥࿈ଓ
ɾ௨ৗۀ຿ͱ߹Θͤͯϒϩάࣥච׆ಈʹؔΘΔ༷ʑͳܒ໤׆ಈΛ࣮ࢪɺల։ https://x.com/shinyaa31 https://dev.classmethod.jp/author/shinyaa31/ https://speakerdeck.com/shinyaa31/ https://www.linkedin.com/in/shinya-a-3589a7a4/ 

୅දతͳʰϒϩάࣥචʱʹؔ͢Δ׆ಈ <೥>
ݸਓϒϩάɺձࣾϒϩάΛ௨ͯ͡Πϕϯτ
ࢀՃϨϙʔτΛຊ௒ࣥච
ؾ෇͍ͨΒຊۙ͘ษڧձˍΠϕϯτϨϙʔτΛॻ͍͖ͯͯ ͨͷͰߟ͑ํͱ͔ॻ͖ํͱ͔Λ·ͱΊͯΈͨ
UFDIQVC
c
%FWFMPQFST*0
IUUQTEFWDMBTTNFUIPEKQBSUJDMFTNZ XBZPGXSJUJOHFWFOUQBSUJDJQBUJPOSFQPSUCZ TIJOZBB <೥>
%FWFMPQFST*0ஶऀਞʹର͠zϒϩάࣥචz
ʹవΘΔ༷ʑͳτϐοΫͰΠϯλϏϡʔ͠ ͨهࣄΛʰͻͱΓΞυϕϯτΧϨϯμʔʱ ܗࣜͰ͓ಧ͚
%FWFMPQFST*0
ஶऀͷΈΜͳʹ৭ʑฉ͍ͯΈͨ
"EWFOU
$BMFOEBS

ͷهࣄҰཡ
c
%FWFMPQFST*0
IUUQT EFWDMBTTNFUIPEKQSFGFSFODFDBUJOUFSWJFXTXJUI EFWFMPQFTJPCMPHHFSTBEWFOUDBMFOEBS <೥>
%FWFMPQFST*0ࣥචʹ͓͚Δݦஶͳ׆ಈΛ͠ ͍ͯΔϝϯόʔʹొஃ௖͘ܗͷࣾ಺ษڧձ Λ࣮ࢪܭճɺొஃऀ਺ਓɺྦྷܭࢀՃऀ ਺ਓ௒
ࣾ಺Πϕϯτʰ
%FWFMPQFST*0
ϒϩάษڧձ
ʱ։࠵಺ ༰ͷ·ͱΊ ͱৼΓฦΓˍ૯ׅ
c
%FWFMPQFST*0
IUUQT EFWDMBTTNFUIPEKQBSUJDMFTSFQPSUEFWFMPQFSTJP CMPHHJOHDPOGFSFODFIJTUPSJFTBOETVNNBSZ <೥>
ʰͻͱΓΞυϕϯτΧϨϯμʔʱ ೔ؒ ಛఆςʔϚͰϒϩά౤ߘΛॻ͖ܨ͙ͷΛ ਓͰ΍Δ Λݸਓతʹ௨ࢉճ࣮ࢪ
     
ࣾ಺Πϕϯτʰ
%FWFMPQFST*0
ϒϩάษڧձ

ʱͰ ʮΞυϕϯτΧϨϯμʔΛ׬૸͢Δٕज़ʯͱ͍͏ςʔϚͰൃ දΛߦ͍·ͨ͠ɻ
c
%FWFMPQFST*0
IUUQT EFWDMBTTNFUIPEKQBSUJDMFTSFQPSUEFWFMPQFSTJP CMPHHJOHDPOGFSFODFWPMUFDIOJRVFTGPS DPNQMFUJOHBOBEWFOUDBMFOEBS 

Πϕϯτ৘ใ 

5FDI
8SJUFST
.FFUVQ
 ։࠵೔࣌ɿ೥݄೔ Ր



։࠵ܗࣜɿΦϯϥΠϯ (PPHMF
.FFU
ओ࠵ɿ+BHV`FS
5FDI
8SJUFST
෼Պձ
։࠵֓ཁɿ
)PNF

+BQBO
(PPHMF
$MPVE
6TFSHSPVQ
GPS
&OUFSQSJTF
IUUQTKBHVFSKQ
5FDI
8SJUFST
෼Պձ

+BQBO
(PPHMF
$MPVE
6TFSHSPVQ
GPS
&OUFSQSJTF
IUUQTKBHVFSKQUFDI@XSJUFST


%FWFMPQFST*0
ͷݱࡏ 

%FWFMPQFST*0ͷྺ࢙ ೥ɿΫϥεϝιουגࣜձࣾ
ઃཱ
೥ɿ୅දऔక໾
ԣా૱ɺݸਓϒϩάΛ࢝ΊΔ ޙʹ'MFYΛऔΓ্͛ɺձࣾϒϩάઃཱͷྲྀΕ΁
೥݄ɿ͜ͷ࣌ظ·ͰձࣾϒϩάΛ༷ʑͳܗͰӡӦɺࢼߦࡨޡͷ࣌୅͕ଓ͘
೥݄ɿ%FWFMPQFST*0ͷલ਎ϒϩάͷӡӦ͕࢝·Δ ςʔϚຖʹϒϩά΋෼͚͍ͯͨ
೥Նɿલ਎ϒϩά͕౷߹͞Εɺࠓͷ%FWFMPQFST*0ͷܗʹϦχϡʔΞϧ
೥݄ɿ௨ࢉ ຊୡ੒
೥݄ɿ௨ࢉ ຊୡ੒
೥݄ɿ
௨ࢉ ຊୡ੒
೥݄ɿ௨ࢉ ຊୡ੒
೥݄ɿϒϩάࣥච؀ڥ͕8PSEQSFTT͔Β$POUFOUGVMʹ੾ΓସΘΔ
೥YY݄ɿ௨ࢉຊୡ੒ʜʁ 

%FWFMPQFST*0ͷࣥචମ੍ ɾδϣΠϯ࣌ʹϒϩάΞΧ΢ϯτΛൃߦ ΄΅શһ
ɾࣥචʹ׳ΕΔ·Ͱ͸ϝϯλʔͷԼͰ࢑͘ࢦಋΛड͚Δ
ɹ ࣥච͸ग़དྷΔ͕ެ։͸ग़དྷͳ͍ܗϝϯλʔ͕ެ։
ɾ׳Ε͖ͯͨΒ౤ߘެ։ݖݶΛ෇༩
ɾجຊతʹ͸ެ։ʹؔ͢Δܗࣜతͳࣾ಺ϨϏϡʔͷ࢓૊Έ͸ͳ͍ɻஶऀݸਓͷ੹೚Ͱਫ਼ࠪͷ্ެ։
ɹ ஶऀ͔ΒͷґཔͰϝϯλʔ΍༗ࣝऀʹ಺༰Λ֬ೝͯ͠΋Β͏ͱ͍ͬͨ͜ͱ͸೔ৗ஡൧ࣄ
ɾجຊతʹ͸
ɹɾʰ޷͖ͳ͜ͱΛ޷͖ͳͱ͖ʹ޷͖ͳܗͰॻ͘ʱɻ
ɾΫϥεϝιουͷΧϧνϟʔͷͭʹ΋ʰ৘ใൃ৴ʱ͸ܝ͛ΒΕͯ
ɹ͓ΓɺΫϥεϝιουΛܗ࡞Δ΋ͷͱͯ͠ϒϩά %FWFMPQFST*0 ͸
ɹॏཁͳҐஔ෇͚ͱͳ͍ͬͯΔɻ ΫϥεϝιουͷΧϧνϟʔ
c
ձࣾ৘ใ
c
Ϋϥεϝιουגࣜձࣾ
IUUQTDMBTTNFUIPEKQDPNQBOZDVMUVSF 

਺ࣈͰޠΔ%FWFMPQFST*0 ɾྦྷܭ౤ߘຊ਺ɿຊ
˞௚ۙաڈ೥
ຊ ೥ ˠຊ ೥ ˠຊ ೥
ɾ༗ޮஶऀΞΧ΢ϯτ਺ɿ໿
ɾ೥ؒͰ࠷΋ଟ͘౤ߘ͞Εͨຊ਺ɿຊ ೥

೔͋ͨΓຊฏۉͷܭࢉ
ɾ೔Ͱ࠷΋ଟ͘౤ߘ͞Εͨຊ਺ɿຊ ೥݄೔
ɾ೥ؒͰ࠷΋ଟ͘౤ߘͨ͠ஶऀͷຊ਺ɿຊ ೥
͍Θ͞
ɾ࢛൒ظͰ࠷΋ଟ͘౤ߘͨ͠ஶऀͷຊ਺ɿຊ ೥2
͍Θ͞
ɾϲ݄Ͱ࠷΋ଟ͘౤ߘͨ͠ஶऀͷຊ਺ɿຊ ೥݄
͠Μ΍
ɾ೔Ͱ࠷΋ଟ͘౤ߘͨ͠ஶऀͷຊ਺ɿຊ ೥݄೔
ਡ๚༔ل
ɾྦྷܭຊ਺ͷஶऀຖͷ෼෍
ɹɾྦྷܭຊ਺ຊҎ্ͷஶऀ਺ɿ
ਓ
ɹɾྦྷܭຊ਺ຊҎ্ͷஶऀ਺ɿਓ
ɹɾྦྷܭຊ਺ຊҎ্ͷஶऀ਺ɿ
ਓ
ɹɾྦྷܭຊ਺ຊҎ্ͷஶऀ਺ɿ
ਓ
ɹɾྦྷܭຊ਺ຊҎ্ͷஶऀ਺ɿ
ਓ
ɹɾྦྷܭຊ਺ຊҎ্ͷஶऀ਺ɿ

ਓɹ ˞਺ࣈ͸͍ͣΕ΋࣌఺ 

ϒϩάΛॻ͖΍͍͢؀ڥͮ͘Γ ɾࣥචҙࢥʹ͍ͭͯ͸ա౓ʹؔ༩͠ͳ͍
ɹɾʰ޷͖ͳࣄʱΛʰ޷͖ͳ࣌ʱʹʰ޷͖ͳ಺༰ʱͰॻ͘
ɹɹɾʰ͜ΕΛॻ͖ͳ͍͞ʱͱ͍͏͜ͱ͸΄ͱΜͲͳ͍
ɹɹɾࣗ෼ͷॻ͍ͨ಺༰͸ࣗ෼Ͱ੹೚Λ࣋ͭͱ͍͏ଆ໘͕ڧ͍͔΋͠Εͳ͍
ɹɹɾࣥචςʔϚʹ೰Ήਓʹʰ͜͏͍͏ͷ͸Ͳ͏͔ͳʱͱ͍͏ఏҊ͸͋Δ
ɾϒϩάࣥචʹؔ͢Δ4MBDLνϟϯωϧͷଘࡏ
ɹɾࣥච಺༰ʹ͓͚Δޡࣈ୤ࣈɺ಺༰ͷνΣοΫͳͲΛಡऀ໨ઢͰదٓࢦఠ
ɹɾϒϩάࣥචʹؔ͢Δ࣭໰΍೰ΈࣄͳͲ΋ؾܰʹ૬ஊՄೳ
ɹɾλά΍ΧςΰϦɺΞΠΩϟονͷ࡞੒ґཔͳͲ΋ରԠ
ɹɾߍӾͷଆ໘ΛҰ෦୲͍ͬͯΔͱ΋ݴ͑Δ
ɾϒϩάࣥචʹؔ͢Δૢ࡞खॱ΍5JQT৘ใ౳͸దٓڞ༗
ɹɾ͓໾ཱͪ৘ใΛϒϩάͰެ։ɺڞ༗͢Δ͜ͱ΋ 

࣭໰΁ͷճ౴ ˞೥݄೔࣌఺ͷ৘ใͰ͢
˞Ҏ߱ͷ಺༰͸શͯݸਓͷॴײͰ͢ 

2
ٕज़ϒϩάΛਪਐ͢ΔҰ൪ͷ໨త͸ͳΜͰ͔͢ʁ lҰ൪zͱݴ͍ͭͭز͔ͭ໨త͸ز͔ͭࢥ͍ු͔ͼ·͢


ɾ৘ใͷڞ༗
ɹ ެ։ͨ͠ϒϩά͕୭͔ͷ໾ʹཱͭ
ɾاۀ΍ݸਓͷϒϥϯυΛཱ֬
ɹ ΫϥεϝιουʹϒϩάͷձࣾɺಛఆαʔϏε΍෼໺ʹڧ͍ͱ͍͏Ξϐʔϧ
ɾεΩϧΞοϓ
ɹ ΠϯϓοτɾΞ΢τϓοτͷαΠΫϧΛճ͢͜ͱͰʹεΩϧΞοϓग़དྷΔ
ɾධՁɺใु
ɹ Ξ΢τϓοτ͢Δ͜ͱͰ໰͍߹Θͤ΍Ҋ݅ʹܨ͕Γɺ
ɹ
݁Ռͱͯࣥ͠චऀࣗ਎ͷධՁʹܨ͕Δ 

2
ϊϧϚ΍ΠϯηϯςΟϒ͸ઃ͚͍ͯ·͔͢ʁ <ϊϧϚ>
ɹɾzٛ຿తͳ΋ͷzͱ͍͏ҙຯ߹͍Ͱ͸جຊతʹ͸
ɹɹ શࣾڞ௨తʹ͸ ઃ͚͍ͯ·ͤΜ
ɹɾ෦ॺ΍νʔϜʹΑͬͯ͸z໨ඪ஋zͱͯ͠ઃఆ͞Ε͍ͯΔ৔߹΋͋Δ໛༷
ɹɹ ৄࡉ·Ͱ͸೺Ѳ͍ͯ͠ͳ͍Ͱ͢
ɹɾʮݸਓత໨ඪʯͱͯ͠͸ਓͦΕͧΕͰཱ͍ͯͯΔײ͡
<ΠϯηϯςΟϒ>
ɹɾʰYYຊॻ͍͔ͨΒӠʑʱͱ͍͏ͷ͸ͳ͍Ͱ͢
ɹɾͨͩ͠ɺձࣾͷΧϧνϟʔͱͯ͠΋ʰ৘ใൃ৴ʱͱͯ͠͸໌ه͞Ε͓ͯΓɺ
ɹɹΞ΢τϓοτͷߩݙ౓߹͍ͰධՁ͞ΕΔ͜ͱ͸͋Γ·͢ 

2
ٕज़هࣄΛॻ͍ͯ΋Β͏ͨΊʹ΍͍ͬͯΔࢪࡦ͸͋Γ·͔͢ʁ <ษڧձͷ։࠵>
ɾ਺೥͓͖ʹʰϒϩάษڧձʱΛ։࠵
ɾϒϩάࣥචͷ஌ݟΛڞ༗͢ΔػձΛઃ͚͍ͯΔ
<΋͘΋͘ձͷ։࠵>
ɾू·ͬͯϒϩάΛ΋͘΋͘ॻ͘ɺͨͩͦΕ͚ͩ
ɾ։࠵த͸࣭ٙԠ౴΍นଧͪͳͲ΋దٓ
<౤ߘσʔλͷՄࢹԽڞ༗>
ɾϒϩά౤ߘσʔλΛผ్෼ੳ؀ڥʹ࿈ܞ͠ɺՄࢹԽͯ͠ఆظతʹڞ༗
ɹɾ৆ࢍ ͜Ε͚ͩॻ͍ͨʂ͜Μͳ੒Ռ͕ʂ
ɹɾઞΓ ΋ͬͱօόϯόϯॻ͚ΔΑͳʁతͳ 

2
ٕज़هࣄΛॻ͍ͯ΋Β͏ͨΊʹ΍͍ͬͯΔࢪࡦ͸͋Γ·͔͢ʁ <શࣾతͳϚΠϯυ>
ɾࣥචҙࢥʹ͍ͭͯ͸ա౓ʹؔ༩͠ͳ͍
ɾʰ޷͖ͳࣄʱΛʰ޷͖ͳ࣌ʱʹʰ޷͖ͳ಺༰ʱͰॻ͘
ɾࣗ෼ͷॻ͍ͨ಺༰͸ࣗ෼Ͱ੹೚Λ࣋ͭͱ͍͏ଆ໘͕ڧ͍͔΋͠Εͳ͍
ɾࣥචςʔϚʹ೰Ήਓʹʰ͜͏͍͏ͷ͸Ͳ͏͔ͳʱͱ͍͏ఏҊ͸͋Δ
<4MBDLνϟϯωϧͰͷ৘ใɾ೰Έڞ༗>
ɾϒϩάࣥචʹؔ͢Δ࣭໰΍೰ΈࣄͳͲ΋ؾܰʹ૬ஊՄೳ
ɾ౤ߘ͞ΕͨهࣄͷνΣοΫػߏͷ໾ׂ΋Ռ͍ͨͯ͠Δ
ɾ͓໾ཱͪ৘ใΛϒϩάͰެ։ɺڞ༗͢Δ͜ͱ΋͋Δ


2
ϨϏϡʔ νΣοΫ ମ੍ͳͲܾ·Γ͝ͱ͸͋Γ·͔͢ʁ ɾݫີʹ಺༰ΛνΣοΫ͢Δ࢓૊Έɺػߏతͳ΋ͷ͸ଘࡏ͠ͳ͍
ɾ͋͘·Ͱ౤ߘऀࣗ਎͕੹೚Λ࣋ͬͯ಺༰Λਫ਼ࠪ֬ೝͷ্ެ։ɺ͕جຊϧʔϧ
ɾࣥචʹؔ͢ΔΨΠυϥΠϯ͸༻ҙɺల։
ɾஶऀͷεςʔλεʹԠͯ͡ରԠ͸গʑҟͳΔ
ɹɾΫϥεϝιουʹ৽͘͠ՃΘͬͨϝϯόʔͷ৔߹
ɹɹɾҰఆظؒʰϝϯλʔʱͷԼͰࣥච׆ಈΛ։࢝
ɹɹɾهࣄ࡞੒͸ग़དྷΔ͕౤ߘެ։͸ग़དྷͳ͍ݖݶ
ɹɹɾϝϯλʔ͕ঢ়گΛ൑அ͠0,͕ग़Ε͹౤ߘݖݶ෇༩ɺࣗ෼Ͱ౤ߘग़དྷΔܗʹ
ɹɾҰൠ౤ߘऀͷ৔߹
ɹɹɾࣗΒͷ൑அͰهࣄ಺༰Λਫ਼ࠪɺެ։
ɹɹɾެ։લʹϨϏϡʔґཔ͸໪࿦Մೳ ํ๏͸༷ʑ
ɹɹɾ߹Θͤͯɺ౤ߘͨ͠هࣄʹ͍ͭͯ͸ஶऀ͕ʰಡऀࢹ఺ʱͰదٓߦ͓ͬͯΓɺ
ɹɹɹϑΟʔυόοΫ΋ߦΘΕ͍ͯΔ 

2
l͜Ε͸΍Βͳ͖ΌΑ͔ͬͨz
ࣦഊஊΛڭ͍͑ͯͩ͘͞ʂ ɾϒϩάࣥචΛzڧ͍ͨz͜ͱ͕͋ͬͨ
ɹɾશһ͕શһzॻ͚ΔzΘ͚Ͱ΋ɺzॻ͖͍ͨzΘ͚Ͱ΋ͳ͍ 

No content