Elixir ご紹介

&MJYJS͝঺հ /BPZB*UP ,BJ[FO1MBUGPSN *OD 4IJCVZBFY

͜Μʹͪ͸ɺ࢒೦ͳ ೔ຊͷ8FCٕज़ऀͰ͢

ΞδΣϯμ •  ࿩͢͜ͱ – &MJYJSͷͬ͘͟Γಛ௃ – ݴޠతͳػೳ – 051पΓͷ֓ཁ •  ࿩͞ͳ͍͜ͱ – ࡉ͔͍γϯλοΫεŋŋŋࢀߟࢿྉΛͲ͏ͧ

&MJYJSɺͬ͘͟Γಛ௃

&MJYJS •  &SMBOH7.ͷ্Ͱಈ͘ •  ಈతܕ෇͚ͳؔ਺ܕݴޠ •  ͜ͳΕͨύοέʔδ؅ཧγεςϜ.JY •  ܰྔϓϩηεɺΞΫλʔʹΑΔฒߦॲཧ • 
051

3VCZ •  Ұݟ͢Δͱ3VCZͬΆ͍ •  ࣮ࡍͦΕ΄Ͳ3VCZͬΆ͘ͳ͍ •  Ή͠Ζ&SMBOH051 – γϯλοΫε͕ೃછΈ΍͍͢&SMBOH051 ͱଊ͑ͨ΄͏͕ྑ͍

ͳͥ&MJYJS •  ϥϯλΠϜ͕ڧྗ – ΞΫλʔϞσϧʹΑΔฒߦॲཧج൫Λݴޠ ϥϯλΠϜͰඪ४౥ࡌ ͱ͍͏Θ͚Ͱɺॏཁͳͷ͸ 3VCZΈ͍ͨdͰ͸ͳ͘ɺ &SMBOH051ͷ্ʹ৐ͬͯ
Δͬͯͱ͜

ؔ਺ܕݴޠͱͯ͠ͷ&MJYJS

ಈతܕ෇͚ͷؔ਺ܕݴޠ

ؔ਺ܕݴޠͱͯ͠ͷ&MJYJS •  ୈҰڃؔ਺ɺߴ֊ؔ਺ •  ύλʔϯϚον •  ෆมͳσʔλܕ •  ࠶ؼ ຤ඌݺͼग़͠࠷దԽ͋Γ

ͳ͍΋ͷ •  Ͱ͸ ͳ͍ – ੩తܕ෇͚ – ७ਮؔ਺ܕ ෭࡞༻͋Γ – ෦෼ద༻ΧϦʔԽ – 0QUJPOܕ
.BZCF •  ͋ΔΑ – Ϧετ಺แදه – ஗ԆධՁɺແݶϦετ ˞ݴޠશମͰ͸ͳ͍

ύλʔϯϚον •  &MJYJSͷจ๏ͷجૅʹͳͬͯΔػೳ – ؔ਺ܕݴޠͰ͸݁ߏΈΔŋŋŋ)BTLFMMͱ͔ – JGจͳͲΛ࢖Θͳ͍એݴతͳهड़ʹߩݙ •  ஋ͷύλʔϯΛهड़͠ɺ஋ͱর߹͢Δ – ύλʔϯͱ஋͕Ϛονͨ͠ΒɺԿ͕͔͕͠ߦ ΘΕΔ – ͸࣮͸ύλʔϯϚονԋࢉࢠ

ύλʔϯϚον h"p://www.slideshare.net/Joe_noh/elixir-‐01

ύλʔϯϚον εςʔλείʔυͷ ͱ͖͚ͩؔ਺͕ݺ͹ΕΔ ஋͕͜ͷߏ଄ΛؚΉͱ͖͚ͩ ݺ͹ΕΔɻ·ͨɺߏ଄಺ͷ஋ ͕XFBUIFSม਺Λଋറ

ύλʔϯϚον ࠶ؼ Ϧετ͕ۭͷͱ͖ ఀࢭ৚݅ Ϧετͷઌ಄ཁૉ͕@IFBE Λଋറɺ࢒Γ͕UBJMΛଋറ

ύλʔϯϚονͷϢʔεέʔε •  ม਺ଋറ •  σʔλߏ଄ͷ෼ղ •  Ϧετॲཧ X࠶ؼ • 
DBTFจ •  ύλʔϯຖͷؔ਺ఆٛ – ஋ʹΑΔؔ਺ͷબ୒

cŋŋŋύΠϓϥΠϯԋࢉࢠ ؔ਺ͷ໭Γ஋Λɺ࣍ͷୈҰҾ਺ʹ౉͢ɻ 'ΠϯεύΠΞΒ͍͠ ؔ਺Λܨ͛ͯॻ͚ͯ ؾ͍͍࣋ͪ

খ͞ͳؔ਺ΛύΠϓϥΠϯ Ͱܨ͍͛ͯ͘ͷ͕&MJYJSྲྀ ͏ʔΉɺ.BZCFཉ͍͠ŋŋŋ

ෆมͳσʔλܕ •  σʔλܕ͸ෆม – 4USJOH -JTU 5VQMF .BQ )BTI%JDU )BTI4FU
•  ཁ͢Δʹഁյతૢ࡞͕ෆՄೳ͚ͬͯͩ •  dict2 = Dict.put(dict, :foo, 3) – dict ͸ෆมɺߋ৽͞Εͨ dict2

GPS XIJMF͕ͳ͍ •  ࠶ؼΛ࢖͏͔ ຤ඌݺͼग़͠࠷దԽ •  ͞΋ͳ͘͹ϧʔΫɺ&OVNΛ࢖͑ iex> [1,2,3]
|> Enum.each fn(x) -‐> IO.puts(x) end 1 2 3 :ok iex> [1,2,3] |> Enum.reduce(0, fn(x, acc) -‐> x + acc end) 6

Ϧετ಺แදه •  )BTLFMM౳Ͱ͓ͳ͡Έͷ – [x | x <-‐ xs, x <
p] •  &MJYJSͰ͸ – for x <-‐ xs, x < p, do: x ਖ਼௚͜Εʹؔͯ͠͸ &SMBOHͦͷ··Ͱྑ͔ͬ ͨͷͰ͸ŋŋŋ ݸਓͷײ૝

ϐλΰϥε਺Λ୳͢ " #$ Λຬͨ͢" # $ͷ੔਺ͷ ૊Λݟ͚ͭΔ

4USFBN •  ߹੒ՄೳͰ஗ԆධՁͳ&OVNFSBCMFT – &OVN͸(SFFEZ – 4USFBN͸-B[Z •  ແݶϦετ΍஗ԆධՁ͕ཉ͍͠ͱ͖͸͜ Ε

3BOHFΛ4USFBNʹม׵ɺ ύΠϓϥΠϯԋࢉࢠͰ pMUFSͱNBQΛ߹੒ UBLF ͨ͠ͱ͜ΖͰॳΊͯ ධՁˠ݅ͷΈܭࢉ ஗ԆධՁ

ϑΟϘφονετϦʔϜ 4USFBNVOGPME͸ΞΩϡϜ Ϩʔλʹܭࢉ݁ՌΛੵΜͰ࠶ ؼతʹؔ਺Λద༻ &OVNUBLF ͨ͠ͱ͜Ζ ͰॳΊͯܭࢉ

ϙϦϞʔϑΟζϜ •  ϙϦϞʔϑΟζϜͷ࣮ݱ – +BWBŋŋŋΠϯλϑΣʔεͳͲͷ্ҐͷܕͰ – 3VCZŋŋŋμοΫλϐϯάͰ – )BTLFMMŋŋŋଟ૬ܕͰ – &MJYJSŋŋŋϓϩτίϧͰ

ϓϩτίϧ ҟͳΔσʔλܕʹಉ໊͡લ ͷؔ਺Λద༻ɻܕʹԠͯ͡ ৼΔ෣͍͕มΘΔ

ϓϩτίϧͷྑ͍ར༻ྫ h"p://blog.drewolson.org/building-‐an-‐elixir-‐web-‐app/

&MJYJSΒ͍͠ίʔυ •  ύλʔϯϚονΛੵۃతʹ࢖͏ •  ෭࡞༻͸ՄೳͳΒආ͚Δ෼཭ •  &OVN౳ͷؔ਺Λ૊Έ߹Θͤͯએݴతʹ ॻ͘ •  ύΠϓϥΠϯԋࢉࢠ|>
࢖͍୯Ұͷ໾ׂ ͷখ͞ͳؔ਺Λܨ͛Δ

&SMBOH051ͱ&MJYJS

&SMBOH7.ͷ্Ͱಈ͘ BEAM (Erlang VM) OTP Elixir

ܰྔϓϩηε •  &SMBOH7.಺ͷ࣮ߦίϯςΩετͷ୯Ґ – 04ͷϓϩηεͰ͸ͳ͍ •  ϓϩηεϫʔυఔ౓ɻ௒ܰྔ – ϊʔυ಺Ͱ਺ඦʙ਺ઍϓϩηεͱ͔ฏؾͰ ࢖͍·͘Δ – 
ϓϩηεͰʙͱ͔ͦ͏͍͏࿩΋ฉ ͘

ܰྔϓϩηεͱฒߦ •  ܰྔϓϩηε͸7.ͰεέδϡʔϦϯά ͞Ε࣮ͯߦ͞ΕΔ •  7.͸εϨουϓʔϧ ͔֬ Ͱ࣮૷͞Ε ͍ͯΔ – ܰྔϓϩηεͰͷฒߦॲཧ͸ϚϧνίΞͰΛ
࢖͑Δ

ΞΫλʔϞσϧ •  ϓϩηεؒ௨৴͸ϝοηʔδύογϯά – ϓϩηεͷதʹʮϝʔϧϘοΫεʯ •  ͦ͜ʹϝοηʔδΛૹΔ TFOE •  ϝοηʔδʹ͸೚ҙͷ஋Λఴ෇Մ
– ϓϩηε͸ͦΕΛड৴଴ͪ SFDFJWF – ஋͸ඞͣίϐʔ͞ΕΔ ڞ༗͞Εͳ͍ •  σʔλΛڞ༗͠ͳ͍㱺ϩοΫ͕͍Βͳ͍

ΞΫλʔϞσϧ

051 •  ϓϩηεपΓͷඪ४ϥΠϒϥϦϑϨʔϜ ϫʔΫ܈ •  &SMBOHͷ࠷େͷࢿ࢈ – ΞΫλʔϞσϧ &SMBOH051͸ͳͲଞݴ ޠ΁େ͖ͳӨڹΛ༩͍͑ͯΔ • 
ྫ4DBMBͷ"LLB

051ϏϔΠϏΞ (FO4FSWFS ܰྔϓϩηεʹύλʔϯ ϏϔΠϏΞ ʹ৐͔ͬΔ ͚ͩͰαʔόΛ࡞ΕΔɻ ཁ͸ϑϨʔϜϫʔΫ

BTZODBXBJUͷཪͰ͸Ξ Ϋλʔ͕ॲཧΛฒྻԽ͢ Δ 051ϏϔΠϏΞ 5BTL

4VQFSWJTPS Supervisor use GenServer ؂ࢹ ʮಥવͷࢮʂʯ ϓϩηεࢮΜͩ͠ɺઓུ ʹ߹Θͤͯ࠶ىಈ͠ͱ͘
Θ crash

-FUJUDSBTI •  ࣦഊʹඋ͑ͳ͍ɻྫ֎Λั·͑ͳ͍ •  4VQFSWJTPSͰ؂ࢹ͓͍ͯͯ͠ɺͦͷ· ·ى͜͢ͳΓύϥϝʔλม͑ͯϦτϥΠ͞ ͤΔͳΓŋŋŋ

4VQFSWJTJPO5SFF h"p://qiita.com/naoya@github/items/ad18b49e9ed56a72cab6

ޠΓ͔͕ͨͬͨଟ෼͕࣌ؒͳ͍ʂ •  ܰྔϓϩηε͸γεςϜͷ৭ΜͳσβΠϯ ͱ૬৐ޮՌΛಇ͔͍ͤͯΔΑ – ύλʔϯϚονͰએݴతʹؔ਺Λબ୒͢Δ͜ ͱͱ-FUJUDSBTI͸૬ੑ͕ྑ͍Α – ϓϩηεͷΞυϨε͸ಁաੑ͕͋ͬͯɺଞͷ ϊʔυ΁ͷϝοηʔδύογϯά΋ҰॹͩΑ ˠ؆୯ʹεέʔϧ͢ΔΑ – ܰྔϓϩηε୯ҐͰ($͢Δ͔ΒϝϞϦ͍Β
ͳ͘ͳͬͨΒϓϩηε͝ͱࣺͯΕ͹ྑ͍Α

3FBDUJWF 3FBDUJWF.BOJGFTUP ϦΞΫςΟϒએݴ h"p://www.reacUvemanifesto.org/ja

ΞΫλʔʹΑΔ ϝοηʔδύογϯά

4VQFSWJTJPO5SFF -FUJUDSBTI

ܰྔϓϩηεͷ ΞυϨεಁաੑ

&SMBOHͱͷ૬ޓޓ׵ੑ •  &SMBOHͱ&MJYJS͸૬ޓޓ׵ – &SMBOHͷϥΠϒϥϦΛ&MJYJSͰ࢖͑Δ – &MJYJSͷΛ&SMBOHͰ΋࢖͑Δ

.JY )FY •  Ϗϧυπʔϧύοέʔδ؅ཧ – 3VCZͷ#VOEMFS SVCZHFNT – /PEFKTͷOQN

IDDBXFTPNFFMJYJS •  ϥΠϒϥϦͷϦϯΫू

%JBMZ[FS ιʔεʹܕ৘ใΛΞϊςʔ γϣϯ͠ͱ͘ͱ ੩తܕνΣοΫ͸Ͱ͖Δ

ϚΫϩ

&MJYJSೖ໳ιʔε ೔ຊޠ •  8FC %#13&44WPM –  IUUQHJIZPKQNBHB[JOFXEQSFTTBSDIJWFWPM • 
+PF@OPI͞ΜͷεϥΠυू –  IUUQXXXTMJEFTIBSFOFU+PF@OPIQSFTFOUBUJPOT •  (FUUJOH4UBSUFEͷ຋༁ –  IUUQFMJYJSKBTFOBOFUXPSLTHFUUJOH@TUBSUFEIUNM •  2JJUBr&MJYJS –  IUUQTRJJUBDPNUBHTFMJYJS

&MJYJSຊ͓͢͢Ί

·ͱΊ •  &MJYJS͸&SMBOH051ͱζο༑ •  ಈతܕ෇͚ͷؔ਺ܕݴޠ – ͱɺݴͬͯ΋ා͘ͳ͍ – ύλʔϯϚονɺύΠϓϥΠϯԋࢉࢠɺ &OVN4USFBN •  051ͰΞΫλʔͳฒߦॲཧ
•  -FUJUDSBTI

Elixir ご紹介

Elixir ご紹介

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