Erlang/OTP並行プログラミングシステムに見る情報システム技術の課題 - 第62回SEA関西プロセス分科会

A Japanese presentation on Erlang/OTP about how the language/system is used, and what Erlang/OTP proposes to the programming communities with the strict semantics avoiding sharing among the data structures.

Transcript

1. Erlang/OTPฒߦϓϩ άϥϛϯάγεςϜʹ ݟΔ৘ใγεςϜٕज़ ͷ՝୊ Kenji Rikitake / SEA Kansai 14-FEB-2015 1
2. ྗ෢ ݈࣍ ʢΓ͖͚ͨ ͚Μ͡ʣ ྗ෢݈ٕ࣍ज़࢜ࣄ຿ॴ ॴ௕ @jj1bdx http://rikitake.jp/ ୈ62ճSEAؔ੢ϓϩηε෼Պձ 14-FEB-2015 Osaka, Japan Kenji Rikitake / SEA Kansai 14-FEB-2015 2
3. ࣗݾ঺հ —ίϯϐϡʔλྺ: 41೥ —ۀքྺ: 35೥ —UNIXྺ: 30೥ —ࣾձਓྺ: 25೥ —Erlang/OTPྺ: 7೥ —ωοτϫʔΫ԰Ͱ͢ —ηΩϡϦςΟ԰Ͱ͢ —Web԰मߦதͰ͢ Kenji Rikitake / SEA Kansai 14-FEB-2015 3
4. ϓϩάϥϛϯάྺ —1970೥୅: 8ϏοτϚΠίϯ —1980೥୅: C, 8086, VAX —ͦͷޙ: x86, amd64, FreeBSD —࠷ۙ͞Θͬͨ΋ͷ: Python, Lua —ؔ਺ܕݴޠʹ͸ྼ౳ײ͕͋Γ·͢ —ΦϒδΣΫτࢦ޲͸Α͘Θ͔Γ·ͤΜ Kenji Rikitake / SEA Kansai 14-FEB-2015 4
5. ͳͥErlangΛ? —2007೥ʹDNSαʔόBINDͷ࿦จΛॻ͍ ͍ͯͯιʔεͷߦ਺͕ଟͯ͘ٽ͍ͨ —CҎ֎ͷݴޠΛ΍Βͳ͍ͱऔΓ࢒͞ΕΔ ؾ͕ͨ͠ —2008೥य़ͷ౦ژग़ுͰErlangͷຊΛཱͪ ಡΈͨ͠ —ͦΕҎདྷϋϚ͍ͬͯΔ Kenji Rikitake / SEA Kansai 14-FEB-2015 5
6. ErlangʢΞʔϥϯʣ ͱ͸? Kenji Rikitake / SEA Kansai 14-FEB-2015 6
7. ErlangͬͯԿ? —ϓϩάϥϛϯάݴޠErlang —ฒߦϓϩάϥϛϯάγεςϜErlang/OTP —্هͷ྆ํΛࢦ͠·͢ —૊ࠐΈ༻ͷErlang΋͋ͬͨΓ͠·͕͢ɼ ͜ͷൃදͰ͸औΓ্͛·ͤΜ Kenji Rikitake / SEA Kansai 14-FEB-2015 7
8. Erlang/OTP͕ಘҙͳ͜ͱ —ωοτϫʔΫαʔό —ߴෛՙେن໛γεςϜ —ฒߦॲཧʢͱ෼ࢄॲཧʣ —଎͍͜ͱΑΓ΋৴པੑΛ༏ઌ —མͱͣ͞ʹσόοά΍Ξοϓσʔτ Kenji Rikitake / SEA Kansai 14-FEB-2015 8
9. Erlang/OTP͕ෆಘҙͳ͜ͱ —ʢͰ͖ͳ͍ͷͰ͸ͳۤ͘खʣ —ܭࢉʢC/C++ͷํ͕޲͍͍ͯΔʣ —จࣈྻॲཧʢ·ͲΖ͍ͬ͜͠ʣ —GUI ʢ֎෦ϥΠϒϥϦʹ౤͍͛ͯΔʣ —ଞͷݴޠ͕ಘҙͳ͜ͱ Kenji Rikitake / SEA Kansai 14-FEB-2015 9
10. Erlangͷ࢖༻ྫ —υϫϯΰͷχίχίੜ์ૹͷ഑৴෦෼ —LINEͷAPIήʔτ΢ΣΠ —࣌ӍಊͷMQTTαʔϏε —෼ࢄKVS RiakΛ࢖ͬͨYahoo!JapanͷϨ ίϝϯσʔγϣϯγεςϜ —WhatsApp Kenji Rikitake / SEA Kansai 14-FEB-2015 10
11. (Disclaimer) —2013೥2݄͔Β9݄·ͰBasho Technologiesͷ೔ຊ๏ਓBashoδϟύϯ גࣜձࣾʹۈ຿͍ͯ͠·ͨ͠ —ಉࣾͷRiak͸ࠓ΋େมྑ͍੡඼ͩͱࢥͬ ͍ͯ·͢ Kenji Rikitake / SEA Kansai 14-FEB-2015 11
12. ErlangΛಈ͔͢ʹ͸ —FreeBSD: Port lang/erlang —Linux: Erlang SolutionsͷόΠφϦ —OS X: HomeBrew Ͱ erlang —Windows: ެࣜΠϯετʔϥ —Ұ࣍഑෍αΠτ —Erlang Solutionsͷ഑෍αΠτ Kenji Rikitake / SEA Kansai 14-FEB-2015 12
13. Kenji Rikitake / SEA Kansai 14-FEB-2015 13
14. Kenji Rikitake / SEA Kansai 14-FEB-2015 14
15. Erlangͷࢀߟॻ(1) —ΦʔϜࣾץʮ͍͢͝ ErlangΏ͔͍ʹֶ΅ ͏ʂʯ —ஶऀ Fred Hébert ͸ Herokuͷ։ൃऀͰɼ಺ ༰ͯΜ͜੝ΓͷຊͰ͢ —ΦϯϥΠϯ൛΋͋Γ·͢ —ݪஶ͸ͪ͜Β Kenji Rikitake / SEA Kansai 14-FEB-2015 15
16. Erlangͷࢀߟॻ(2) —Programming Erlang (2nd edition) —ච಄࡞ऀJoe Armstrong௚ʑͷຊͰ ͢ —ୈ1൛͸೔ຊޠʹ΋ͳͬ ͍ͯ·͢ Kenji Rikitake / SEA Kansai 14-FEB-2015 16
17. Erlangͷࢀߟॻ(3) —Web্ͷެࣜϚχϡΞϧ —ؔ਺ͷ࢓༷౳͕ࡌ͍ͬͯ·͢ —֤ϦϦʔεຖʹ഑෍͞ΕΔͷͰϩʔΧϧ ʹ͋ΔͱศརͰ͢ʢϑΝΠϧ໊ͷྫ: otp_doc_html_17.4.tar.gzʣ —Ωʔϫʔυผʹฤू͞Ε͍ͯΔ΋ͷ΋͋ Γ·͢ Kenji Rikitake / SEA Kansai 14-FEB-2015 17
18. Kenji Rikitake / SEA Kansai 14-FEB-2015 18
19. Kenji Rikitake / SEA Kansai 14-FEB-2015 19
20. ErlangʢΞʔϥϯʣ ͷྺ࢙ Kenji Rikitake / SEA Kansai 14-FEB-2015 20
21. Erlang։ൃͷഎܠ —Ericsson Computer Science Lab (CSLab) —1985೥ʹి࿩ަ׵ػ༻ͱͯ͠։ൃ։࢝ —ͦΕ·ͰͷPLEXݴޠͷޙܧΛΊͨ͟͠ —ઐ༻ˠ൚༻ϋʔυ΢ΣΞ΁ͷҠߦ —֦ுՄೳͳ෼ࢄγεςϜͷ࣮ݱ Kenji Rikitake / SEA Kansai 14-FEB-2015 21
22. PLEX͔ΒErlangʹܧঝ͞Εͨಛ௃ —ଟ਺ͷখ͞ͳϓϩηε͕ฒߦಈ࡞Ͱ͖Δ —ϝϞϦϦʔΫΛىͣ͜͞ʹσʔλߏ଄Λ ಈతʹม͑ΒΕΔ —Ұ౓ϩʔυͨ͠ϞδϡʔϧΛγεςϜΛ ࢭΊͣʹߋ৽Ͱ͖Δ —ఀࢭ࣌ͷࣗಈ࠶ىಈࢼߦ Kenji Rikitake / SEA Kansai 14-FEB-2015 22
23. ErlangΛॻ͍ͨओͳਓୡ —Bjarne Däcker: CSLabͷϦʔμʔ —Joe Armstrong: جຊ࢓༷ઃܭͱ࣮૷ —Mike Williams: CͰͷԾ૝Ϛγϯͷ࣮૷ —Robert Virding: ϥΠϒϥϦͷ࣮૷ —Claes Wikström: ෼ࢄ؀ڥͷ࣮૷ —ͦͯ͠ݱࡏ: Ericsson OTP Team Kenji Rikitake / SEA Kansai 14-FEB-2015 23
24. Joe Armstrongͷࣸਅ Kenji Rikitake / SEA Kansai 14-FEB-2015 24
25. Erlangͷ༝དྷ —Agner Krarup Erlang (1878-1929) —σϯϚʔΫͷ਺ֶऀ —ి࿩ަ׵ͷݺ੍ޚͰ଴ͪ ߦྻཧ࿦Λཱ֬ —…࣮ࡍͷൃԻ͸ʮΤΞϥ ϯάʯʹ͍ۙ —࣮͸ ERicsson LANGuage ͔ͩΒͱ͍ ͏࿩΋ Kenji Rikitake / SEA Kansai 14-FEB-2015 25
26. ErlangʢΞʔϥϯʣ ͷݴޠ࢓༷ͱಛ௃ Kenji Rikitake / SEA Kansai 14-FEB-2015 26
27. Erlangݴޠͷಛ௃(1) —҉໧ͷڞ༗Λۃྗආ͚Δ —಺෦ঢ়ଶ͸໌ࣔతʹసૹ —ม਺͸୯Ұ୅ೖ —σʔλߏ଄͸໌ࣔతʹίϐʔ —৚݅෼ذ͸ύλʔϯϚονϯάͰ Kenji Rikitake / SEA Kansai 14-FEB-2015 27
28. Erlangݴޠͷಛ௃(2) —ϓϩηεؒঢ়ଶڞ༗͸ϝοηʔδͰ —ؔ਺ܕϓϩάϥϛϯάΛ࠾༻ —ϧʔϓ͸࠶ؼͰॻ͘ —಺෦ঢ়ଶ͸Ҿ਺͔ؔ਺Ͱ౉͢ —੍ޚߏ଄͸จͰͳࣜ͘ʢ஋Λ࣋ͭʣ Kenji Rikitake / SEA Kansai 14-FEB-2015 28
29. OTPͷಛ௃ —ඪ४ϥΠϒϥϦҰࣜ —αʔόΛॻͨ͘Ίͷ࿮૊ΈҰࣜ —σόοά΍ςετͷπʔϧ —ͦͷଞϊ΢ϋ΢͕ຬࡌ —→Erlang/OTPͱͯ͠഑෍ Kenji Rikitake / SEA Kansai 14-FEB-2015 29
30. ErlangͰͷϓϩάϥϛϯά —ଞͷݴޠͱେ͖ͳࠩ͸ͳ͍ —ιʔείʔυ (.erl) Λॻ͘ —ΠϯΫϧʔυϑΝΠϧ (.hrl) Ͱڞ༗ —erlc ίϚϯυͰίϯύΠϧ —erl ίϚϯυͰؔ਺Λىಈ࣮ͯ͠ߦ Kenji Rikitake / SEA Kansai 14-FEB-2015 30
31. Kenji Rikitake / SEA Kansai 14-FEB-2015 31
32. Erlangͷߏ੒ཁૉ(1) A = atom, Int = 123, Float = 1.0, Tuple = {A, 1.0, {x, y}}, % ༗ݶݸɼωετՄ List = [A, [1, 2], Float], % Մม௕ɼωετՄ List =:= [A | [Int, Float] ]. % head/tailԋࢉ module:func(Arg1, Arg2). % ؔ਺ݺͼग़͠ % ϚΫϩ -define(?CONST, 100). % ؔ਺֎είʔϓͷΈ X2 = X * ?CONST. % ؔ਺಺Ͱ͸?͕ͭ͘ Kenji Rikitake / SEA Kansai 14-FEB-2015 32
33. Erlangͷߏ੒ཁૉ(2) fun module:func/2. % (2͸arity) Fun = fun(X) -> X * 2. % (fun͸ແ໊ؔ਺) A = <<10, 20, 30>>. % 3όΠτͷόΠφϦ <<X:12, Y:8, Z:4>> = A. % Ϗοτૢ࡞΋Մೳ [X,Y,Z] =:= [161, 65, 14]. %%% Ϧετ಺แදه: mapؔ਺ͱಉٛ [2*P || P <- [X,Y,Z]] =:= [322,130,28]. Kenji Rikitake / SEA Kansai 14-FEB-2015 33
34. arityͱύλʔϯϚονϯά —arity: ؔ਺ͷҾ਺ͷ਺ —ύλʔϯϚονϯάͰ৚݅Λ൑ผ͢Δ test(N) when is_integer(N), N >= 1 -> test(N, 1). test(1, A) -> A; test(N, A) -> test(N - 1, A * N); Kenji Rikitake / SEA Kansai 14-FEB-2015 34
35. ม਺ͱ୯Ұ୅ೖݪଇ —ม਺͸େจࣈ·ͨ͸_Ͱ࢝·Δ —ม਺ͷείʔϓ͸ؔ਺಺ͷΈ —୅ೖͱ͸ίϐʔΛ࡞Δ͜ͱ —ม਺ͷ୅ೖ͸ؔ਺಺Ͱ1ճ͚ͩ —A = A + 1 ͸ؒҧ͍ —A2 = A + 1 ͕ਖ਼͍͠ Kenji Rikitake / SEA Kansai 14-FEB-2015 35
36. Erlangʹଘࡏ͠ͳ͍΋ͷ —ϙΠϯλʢGCͰϝϞϦ؅ཧʣ —JavaతͳΦϒδΣΫτࢦ޲ —Javaతͳ֊૚త໊લߏ଄ —ܕਪ࿦ʢDialyzerͰ࣮ݱʣ —ϧʔϓʢ͢΂ͯ຤ඌ࠶ؼʣ —Cͷstaticม਺ Kenji Rikitake / SEA Kansai 14-FEB-2015 36
37. ܰྔϓϩηεͷେྔىಈ —γεςϜ͸Ծ૝ϚγϯBEAMͰಈ͘ —BEAM͸Ϣʔβϥϯυ্Ͱಈ࡞ —͍ܰίϯςΫετεΠον —GC΋ܰྔϓϩηεʹಛԽ —ىಈ: Pid = spawn(Function) Kenji Rikitake / SEA Kansai 14-FEB-2015 37
38. Kenji Rikitake / SEA Kansai 14-FEB-2015 38
39. ϓϩηεఀࢭݪҼͷ೺Ѳ —ैདྷ: ྫ֎ॲཧ/Τϥʔัଊ —Erlang: ʮམͪͨΒ࠶ىಈʯ —LinkʹΑΓϓϩηεऴྃݪҼΛ೺Ѳ —Τϥʔͷ఻ୡ: link(Pid) —εʔύʔόΠβʹΑΔ࠶ىಈ Kenji Rikitake / SEA Kansai 14-FEB-2015 39
40. Kenji Rikitake / SEA Kansai 14-FEB-2015 40
41. Kenji Rikitake / SEA Kansai 14-FEB-2015 41
42. ϓϩηεؒϝοηʔδ(1) —ϓϩηε͝ͱʹड৴ശ͕͋Δ —બ୒తड৴͕Ͱ͖Δ %%% Pid: ϓϩηεID (BEAM಺Ұҙ) %%% self(): ࣗ෼ࣗ਎ͷPid %%% ϝοηʔδͷૹ৴ Pid ! {self(), {request, Request}}. Kenji Rikitake / SEA Kansai 14-FEB-2015 42
43. ϓϩηεؒϝοηʔδ(2) %%% ϝοηʔδͷड৴: receiveจ %%% ؆୯ͳechoͷϧʔϓ loop() -> receive {From, {request, R}} -> From ! R, loop(); {From, Other} -> From ! {error, Other}, loop() end. Kenji Rikitake / SEA Kansai 14-FEB-2015 43
44. Erlangͷ෼ࢄ؀ڥػೳ —TCP/IPͷιέοτ͸௚઀࢖͑Δ —BEAMؒͷRPC(TCPϕʔε)͕Մೳ —ଞϊʔυͰͷϓϩηεੜ੒͕Մೳ —ϊʔυؒͰͷϝοηʔδૹड৴͕Մೳ —ϊʔυؒͷؔ܎͸ର౳ Kenji Rikitake / SEA Kansai 14-FEB-2015 44
45. OTPͷத਎ —ϥΠϒϥϦͱσβΠϯύλʔϯͷू·Γ —ڞ༗ετϨʔδ ets, dets —෼ࢄσʔλϕʔε Mnesia —SNMP, ASN.1, SSH, SSL, Ұ௨Γ͋Δ —Behaviour: αʔόσβΠϯͷύλʔϯू Kenji Rikitake / SEA Kansai 14-FEB-2015 45
46. ैདྷͷڞ༗લఏͰਐΜ Ͱ͖ͨϓϩάϥϛϯ άͱɼErlangͷઃܭ ํ਑ͷൺֱ Kenji Rikitake / SEA Kansai 14-FEB-2015 46
47. ϓϩάϥϚͷؕΔޡͬͨԾఆ —͢΂ͯͷࢿݯ͸શ෦ͷϊʔυ͔Β஗Ԇͳ ͠Ͱ࢖͑Δ —ଳҬ͸ແݶ —ωοτϫʔΫ͸ۉҰ —؅ཧओମ͸Ұͭ (Peter Deutsch: The Eight Fallacies of Distributed Computing) Kenji Rikitake / SEA Kansai 14-FEB-2015 47
48. ͜Μͳ͜ͱΛԾఆ͍ͯ͠Δ Kenji Rikitake / SEA Kansai 14-FEB-2015 48
49. Ͱ΋ݱ࣮ʹ͸… Kenji Rikitake / SEA Kansai 14-FEB-2015 49
50. ϓϩάϥϚ͕௚໘͢Δݱ࣮ —ࢿݯΛ࢖͏ʹ͸஗ԆΛݟࠐΉඞཁ͕͋Δ —ࢿݯ͸͍ͭ΋࢖͑ΔΘ͚Ͱ͸ͳ͍ —ଳҬ͸༗ݶͰ্ݶ͕͋Δ —ωοτϫʔΫ͸ෆۉҰͰؔॴͩΒ͚ —୭͕؅ཧओମ͔͸τϥϒϧ͕ى͜Δ·Ͱ ͸Θ͔Βͣɼࣗ෼Ͱ͸Ͳ͏ʹ΋ͳΒͳ͍ Kenji Rikitake / SEA Kansai 14-FEB-2015 50
51. ޡͬͨԾఆͷ݁ՌԿ͕ى͜Δ? —Ϟδϡʔϧ΍ؔ਺ͷ༧ظ͠ͳ͍݁߹ —ڞ༗ϝϞϦͷ༧ظ͠ͳ͍มߋʹΑͬͯɼ ղੳෆೳͷόά͕ൃੜ —ڞ༗͢Δ͜ͱͰҰ؏ੑΛ໌ࣔతʹҡ࣋͠ ͳ͍ͱ͍͚ͳ͘ͳΔʢεϨου҆શʣ —࣮ࡍʹ͸ଟ͘ͷʢྫ͑͹Cͷඪ४ʣؔ਺͸ εϨου҆શͰ͸ͳ͍… Kenji Rikitake / SEA Kansai 14-FEB-2015 51
52. ैདྷͷ໋ྩܕݴޠʢC, JSͳͲʣͷલఏ —ʢϓϩηεͷʣ಺෦ঢ়ଶΛ௚઀มߋ͢Δ —಺෦ঢ়ଶ͸ෳ਺ͷؔ਺΍ϞδϡʔϧͰڞ ༗͞Ε͍ͯΔͷ͕લఏ —ϝϞϦϙΠϯλΛ࢖͍ɼίϐʔͷճ਺΍ ෛՙΛݮΒ͢ —ͭ·ΓʮͰ͖ΔݶΓڞ༗͢Δʯ͜ͱΛٻ ΊΒΕ͍ͯΔ Kenji Rikitake / SEA Kansai 14-FEB-2015 52
53. ैདྷͷ໋ྩܕݴޠͷಈ࡞ͷ໰୊ —ൺֱԋࢉ͸σʔλߏ଄ͷத·Ͱ͸ݟͳ͍ —ϙΠϯλΛίϐʔͯ͠΋࣮ମ͸ڞ༗ —ίϯετϥΫλ͸ผͷ࣮ମΛ࡞Δ —࣮ମΛൺֱ͢Δʹ͸໌ࣔతʹͦΕΛߦ͏ ؔ਺/ػೳΛ࢖Θͳ͚Ε͹ͳΒͳ͍ —ෳ਺ϊʔυؒͰͷڞ༗͸೉͍͠ Kenji Rikitake / SEA Kansai 14-FEB-2015 53
54. JavaScript (node.js)ͷྫ // var a = {first: 1, second: 2} // b = a // ϙΠϯλͷίϐʔͷΈ { first: 1, second: 2 } // a.second = 3 3 // b // ໊લ͕ҧͬͯ΋ཁૉ͸ڞ༗ { first: 1, second: 3 } // b == { first: 1, second: 3 } false // Կނ? Kenji Rikitake / SEA Kansai 14-FEB-2015 54
55. Erlangͷલఏ = ڞ༗͠ͳ͍ —ෳ਺ϓϩηεؒͷ௨৴͸ϝοηʔδύο γϯάʢϓϩηεؒ௨৴ʣ͕ݪଇ —ྫ֎͸ಉҰϓϩηεͷதͷؔ਺Ͱڞ༗Ͱ ͖ΔϓϩηεࣙॻͷΈ —ܽ఺: ίϐʔ͕ඞཁͳͨΊ஗͍ —ڞ༗ΛҰ੾ഉআͨ͠ઃܭ͸ࠔ೉ Kenji Rikitake / SEA Kansai 14-FEB-2015 55
56. Erlangͷݴޠ࢓༷ͷલఏ —Ұ౓୅ೖͨ͠ม਺ͷ஋͸ؔ਺ͷ࣮ߦ͕ऴ ΘΔ·Ͱม͑ΒΕͳ͍ —ϙΠϯλͰ͸ࢀরͤͣɼ୅ೖͰ͸σʔλ ߏ଄ͷ࣮ମ͕͢΂ͯෳ੡͞ΕΔ —ൺֱԋࢉ͸σʔλߏ଄ͷ࣮ମΛৗʹൺֱ —ڞ༗͸ϓϩηεࣙॻ΍ets/detsܦ༝ͰՄ ೳ͕ͩɼ໌ࣔతʹҙਤ͠ͳ͍ͱߦ͑ͳ͍ Kenji Rikitake / SEA Kansai 14-FEB-2015 56
57. ErlangͰͷྫ % A1 = {1,2,3}. {1,2,3} % B1 = A1. {1,2,3} % B1͸A1ͷ࣮ମͷίϐʔ % A2 = setelement(3,A1,4). {1,2,4} % B1 =:= {1,2,3}. % ൺֱԋࢉ true % ཁૉ͝ͱͷൺֱΛ͍ͯ͠Δ %%% A1, B1, A2 ͸ݸʑʹಠཱ࣮ͨ͠ମ Kenji Rikitake / SEA Kansai 14-FEB-2015 57
58. ErlangͷݪଇʹΑΓ๷͛Δؒҧ͍ —Ϟδϡʔϧ΍ؔ਺Ͱͷڞ༗͸࠷খݶ —ڞ༗ϝϞϦ͸ݪଇͱͯ͠࢖Θͳ͍ͨΊɼ όάΛݮΒͤΔ —୅ೖʹΑΓ৽͍࣮͠ମ͕ඞͣͰ͖Δͨ Ίɼ୅ೖલͷঢ়ଶʹ؆୯ʹ໭ͤΔ —ϓϩηεؒ௨৴͸୯Ұϊʔυ಺Ͱ΋ෳ਺ ͷϊʔυؒͰ΋ಉ͡Α͏ʹѻ͑Δ Kenji Rikitake / SEA Kansai 14-FEB-2015 58
59. ·ͱΊ: Erlangͷಥ͖ ෇͚ͨ՝୊ɼErlang/ OTPࣗ਎ͷ՝୊ɼͦ ͯ͠ϓϩάϥϚ֤͕ࣗ ߟ͑Δ΂͖՝୊ Kenji Rikitake / SEA Kansai 14-FEB-2015 59
60. ڞ༗͢Δ͜ͱͷੋඇ —ߴ଎Խʹڞ༗=ίϐʔͷ཈੍͸ඞਢ —͔͠͠ڞ༗લఏͩͱϓϩάϥϚ͕৘ใͷ Ұ؏ੑͷ൑அΛৗʹ͢Δඞཁ͕͋Δ —େن໛γεςϜ͸ڞ༗લఏͰ͸࡞Εͳ͍? —Erlangͷඇڞ༗લఏͷݪଇ͸ɼϓϩάϥ Ϛʹڞ༗ͷੋඇΛ໌ࣔతʹߟ͑ͤ͞Δ ͜ͱͰόάͷ཈ࢭʹߩݙ͍ͯ͠Δ(?) Kenji Rikitake / SEA Kansai 14-FEB-2015 60
61. Erlang/OTPࣗ਎ͷ՝୊ —ैདྷͷϓϩάϥϛϯάελΠϧͱ͸͋· Γʹ΋͔͚཭Ε͍ͯΔͨΊशಘ͕೉͍͠ —ίϛϡχςΟ͕େ͖͘ͳΒͳ͍ —଎౓ͱ҆શੑͷτϨʔυΦϑͰ͸ɼਓؒ ͸଎౓ΛऔΓ͕ͪ —ෆۉҰͳ෼ࢄ؀ڥʹ͸ରԠͰ͖͍ͯͳ͍ Kenji Rikitake / SEA Kansai 14-FEB-2015 61
62. ϓϩάϥϚ͕ಥ͖෇͚ΒΕͨ՝୊ —ԿͰ΋ڞ༗͢Δͱ͍͏ύϥμΠϜͷݶք Λड͚ೖΕΒΕΔ͔? —ϓϩάϥϛϯάίϛϡχςΟ͕ɼηΩϡ ϦςΟΛޮ཰ΑΓ༏ઌ͢ΔจԽΛ਎ʹ ͚ͭΔ͜ͱ͸Ͱ͖ΔͩΖ͏͔? —ඇڞ༗લఏͷݪଇ͸ݱ࣮తʹ؏͚Δͷ͔? Kenji Rikitake / SEA Kansai 14-FEB-2015 62