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すごいErlang楽しく学んだ!
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Tatsuya Touma
October 16, 2015
Technology
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160
すごいErlang楽しく学んだ!
表参道.rb #5の発表資料です。
http://omotesandorb.connpass.com/event/20289/
Tatsuya Touma
October 16, 2015
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Transcript
͍͢͝Erlangֶָ͘͠Μͩʂ @kei_q දࢀಓ.rb #5 2015-10-01 1
ͳͥErlang? 2
@kei_q 1 2 • ͓ࣄ: JSON APIΛ࡞ͬͯӡ༻ • Ruby/Rails •
Swift, Objective-C 2 ࠷͓ۙ͠Ζ͍ͱࢥ͏ͷ: cloudformationͷupdate-stackͱpolicy 1 झຯͰ͍ͬͯΔݴޠ: Ruby, Haskell 3
͖͔͚ͬ : RailsҎ֎ͷબࢶ JSONฦ͚ͩ͢ͳΒRailsʹͩ͜ΘΒͳͯ͘ྑ͍ ݴޠϑϨʔϜϫʔΫɺΤίγεςϜͷಛΛཧղͯ͠ɺదࡐదॴ 4
͖͔͚ͬ : shibuya.ex#1 .ex = Elixir = ErlangVM্Ͱಈ࡞͢Δݴޠ 5
ͳͥErlangΛֶ΅͏ͱࢥ͔ͬͨ • োੑͷߴ͞ʹ͍ͭͯΓ͍ͨe1 • ElixirͷલʹErlangΛ͓͍͑ͨ͞e2 • ࣌Ӎಊ BOT αʔόʔͷهࣄΛΈͯڵຯ͕Θ͍ͨ e2
ࢿྉΛಡΜͩΓErlangͷmoduleΛཧղ͢ΔͨΊʹErlangΛಡΊͨ΄͏͕ḿΓͦ͏ͱࢥͬͨ e1 ͙ͬ͢ΓΓ͍ͨ 6
7
࣮ࡍʹಡΜͰΈͯ 8
Erlangͷಠಛͳจ๏ t1 loop(N) -> receive some_standard_message -> N + 1;
other_message -> N-1; {get_count, Pid} -> Pid ! N, loop(N); update -> ?MODULE:loop(N); end. ͍͢͝ErlangຊͷAΛઌʹΛ௨͢ͷ͓͢͢Ί t1 ඌͷه߸Ҏ֎ʹandalsoͱ͔atomͱมͷ໋໊ͱ͔ൺֱԋࢉࢠͱ͔͍Ζ͍Ζಠಛ 9
ຊͷ༰ ӈਤ͍͢͝Erlangຊ22.2h1ΑΓҾ༻ h1 અͷݟग़͠ʮErlangࠈͷ࠷Լʯ 10
ಡॻϩά 11
ಡΈऴ͑ͯ 12
ͲΕ͔ʹڵຯ͕͋Ε͓͢͢Ί ErlangͷҒେ͞ͷ͕ ฒߦͱࢄ ʹΑΔͷͩͱͨ͠Βɺ ͏ Τϥʔॲཧ ͷೳྗʹΑΔͷͰ͋Γɺ ͞Βʹ3ͭΊͷΛͨΒ͢ͷ͕ OTPϑϨʔϜϫʔΫ ͳͷͰ
͢ɻ — ͍͢͝Erlangֶָ͘͠΅͏ʂ 14ষΑΓ3 3 ଠࣈεϥΠυͰՃච 13
ଞͷຊΛ͓͢͢Ί • ؔϓϩάϥϛϯάΛֶͿͨΊʹಡΉ • ʮ͍͢͝Haskellͨͷֶ͘͠΅͏!ʯ͕͓͢͢Ί • ݎ͍จମͰΑ͚ΕʮϓϩάϥϛϯάHaskellʯ 14
ײ 15
͍͢͝ ָ͍͠ ֶΔ 16
END 17
εϥΠυ࡞ʹ༻ͨ͠πʔϧ • deckset • εϥΠυ࡞ • atom • markdownฤू •
googleεϓϨουγʔτ • άϥϑ࡞ 18