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Clojure 1.9 概要紹介
OHTA Shogo
September 25, 2017
Programming
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Clojure 1.9 概要紹介
2017/09/25のLisp meetup #56の発表資料です。
OHTA Shogo
September 25, 2017
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Transcript
$MPKVSF֓ཁհ -JTQNFFUVQPO !BUIPT
֓ཁ ‣ ͷϦϦʔε͕ؒۙ CFUB͕ઌिΑ͏͘ϦϦʔε DGϦϦʔε݄ BMQIBϦϦʔε݄ དྷ݄ͷ$POKʹ߹ΘͤͯϦϦʔεͷՄೳੑ
‣ pOBMϦϦʔεʹ͚ͯͷओཁͳมߋΛ͓͞Β͍
$MPKVSFͷओཁͳมߋ ‣ DMPKVSFTQFD ‣ ໊લۭ͖ؒͭϚοϓ OBNFTQBDFENBQT ‣ /B/*OG*OGͷ৽͍͠֎෦දݱ
DMPKVSFTQFD ‣ ड़ޠΛϕʔεʹͨ͠σʔλ༷ͷهड़"1* ৄࡉʮDMPKVSFTQFDʯͰݕࡧ ‣ ҎԼͷ༻్ʹ͑Δ υΩϡϝϯςʔγϣϯ
όϦσʔγϣϯ ౷ҰతͳΤϥʔϨϙʔτ ϓϩύςΟϕʔεςετ 4ࣜͷߏจղੳ ‣ ·ͩΞϧϑΝѻ͍ TQFDBMQIBͱͯ͠$MPKVSFຊମͱಠཱʹ։ൃ͞Ε͍ͯ͘༧ఆ
$MPKVSF͔Βͷߏ ‣ $MPKVSF͕TQFDBMQIBͱDPSFTQFDTBMQIBʹґଘ͢Δߏʹ ‣ TQFDBMQIB TQFDͷػೳఆٛ ‣ DPSFTQFDTBMQIB
$MPKVSFͷίΞϥΠϒϥϦͷεϖοΫఆٛ $MPKVSF TQFDBMQIB DPSFTQFDT BMQIB
DMKίϚϯυ ‣ ͜Ε·Ͱͷ$MPKVSFKBSͭΛμϯϩʔυͯ͘͠Ε͑ ͕ͨɺ͔ΒTQFDBMQIBͱDPSFTQFDBMQIBʹґଘ ‣ ґଘϥΠϒϥϦΛղܾͯ͠$MPKVSFΛ͑Δঢ়ଶʹ͢Δख ஈͱͯ͠DMKίϚϯυ͕༻ҙ͞Εͨ ‣ “brew install
clojure”Ͱ$MPKVSF͕͑ΔΑ͏ʹ ଞͷύοέʔδϚωʔδϟʹਵ࣌Ճ͞ΕΔ༧ఆ
TQFDϕʔεͷϚΫϩߏจνΣοΫ ‣ ϚΫϩʹରͯ͠εϖοΫΛఆ͓ٛͯ͘͠ͱɺίϯύΠϥ͕ ࣗಈతʹߏจ͕εϖοΫʹ߹͍ͬͯΔ͔ΛνΣοΫ ‣ ౷Ұతͳํ๏ͰΤϥʔΛฦͯ͘͠ΕΔ
ʲએʳ1JOQPJOUFS ‣ ࡞ͷεϖοΫΤϥʔϨϙʔλ1JOQPJOUFSͰɺεϖοΫ ΤϥʔΛ͔Γ͘͢දࣔͯ͘͠ΕΔʂ ϋΠϥΠτ͖ͭ
EPDͷTQFDαϙʔτ
ड़ޠؔͷ֦ॆ ‣ boolean? ‣ int? pos-int? neg-int? nat-int? ‣ double?
bigdec? ‣ ident? simple-ident? qualified-ident? ‣ simple-symbol? qualified-symbol? ‣ simple-keyword? qualified-keyword? ‣ bytes? ‣ indexed? ‣ uuid? uri? ‣ seqable? ‣ any?
໊લۭ͖ؒͭϚοϓ ‣ TQFD໊લۭ͖ؒͭͷΩʔϫʔυΛଟ༻ ϚοϓͷΩʔͱͯ͠͏ࡍʹɺҰҙͷҙຯΛ࣋ͨͤΔͨΊ ‣ ͯ͢ͷΩʔ͕ಉ໊͡લۭؒͰम০͞Ε͍ͯΔ߹ͷলུه๏ #:foo{:a 1, :b
2} (require ‘[foo.core :as foo]) #::foo{:a 1, :b 2} #::{:a 1, :b 2} {:foo/a 1, :foo/b 2} {:foo.core/a 1, :foo.core/b 2} {:user/a 1, :user/b 2}
໊લۭ͖ؒͭϚοϓͷଋറ ‣ ϚοϓͷଋറͰ໊લۭ͖ؒͭͷΩʔϫʔυΛѻ͍ ͍͢Α͏ʹ
/B/*OG*OGͷ৽͍͠֎෦දݱ ‣ ৽ͨʹ##ͱ͍͏ϦʔμʔϚΫϩ͕Ճ͞Εͨ /B/##NaN *OpOJUZ##Inf *OpOJUZ##-Inf ‣
ʹఏҊ͞Εɺӽ͠ͰΑ͏͘࠾
ͦͷଞͷมߋ ‣ *reader-resolver*ͰγϯϘϧΩʔϫʔυͷղܾͷ ํ͕QMVHHBCMFʹ ‣ InstϓϩτίϧͷՃ ‣ swap-vals! reset-vals! ‣
halt-whenτϥϯεσϡʔα
·ͱΊ ‣ $MPKVSFϦϦʔε͕ؒۙ ‣ DMPKVSFTQFDΛத৺ͱͨ͠มߋ͕Γࠐ·Εͨ ‣ TQFDࣗମ·ͩΞϧϑΝѻ͍ͷ·· ͳͷͰɺ༷มߋ ͋Γ͏Δ ͕ͩɺ͕Ұ୴ϦϦʔε͞ΕΕϓϩμΫτ
Ͱຊ֨తʹΘΕ࢝ΊΔ͜ͱ͕༧͞ΕΔ
ࢀߟจݙ ‣ DIBOHFTNE IUUQTHJUIVCDPNDMPKVSFDMPKVSFCMPCNBTUFSDIBOHFTNEDIBOHFTUPDMPKVSFJOWFSTJPO ‣ "CPVUTQFD IUUQTDMPKVSFPSHBCPVUTQFD ‣
3FBEQSJOUSPVOEUSJQGPS *OpOJUZBOE/B/ IUUQTEFWDMPKVSFPSHKJSBCSPXTF$-+