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4XJGUίϯύΠϥʹ $POUSJCVUF͢Δ·Ͱ Swift愛好会 Vol. 54 "QQMF͕։ൃͨ͠ΦʔϓϯιʔεͳίϯύΠϥʹߩݙ͢Δ GSFEEJ <ొஃऀ> ͔ΜͨΜͳ 4XJGUͷਂ͍ϨΠϠʔͷಡΈา͖ํ
4XJGU*OUFSNFEJBUF-BOHVBHFɹɹ4*-0QUJNJ[FS

GSFEEJ ొஃऀ ʹ͍ͭͯ ΠΩϦJ04&OHJOFFS

ࠓ೔͸ॳ৺ऀ޲͚ͷίϯύΠϥͷ࿩ ๻͕$POUSJCVUF͢Δ·ͰʹͲΜͳ͜ͱ΍͔ͬͨ w Ͳ͏͍͏஌ࣝΛಘ͔ͨ w Ͳ͏͍͏ΞΫγϣϯΛ͔ͨ͠

୯౛௚ೖʹݴ͑͹ 4XJGUίϯύΠϥʹ$POUSJCVUF͠·ͨ͠ w IUUQTHJUIVCDPNBQQMFTXJGUQVMM w IUUQTHJUIVCDPNBQQMFTXJGUQVMM

ԿΛ$POUSJCVUFͨ͠ͷʁ Ұͭ͸%PDTͷϛεͷగਖ਼ w 4XJGUͷதؒදݱͷ(SBNNFS͕ϛεͬͯͨ ΋͏Ұͭ͸࠷దԽϩδοΫͷόά w ੲɺొஃࢿྉ࡞ͬͯͨͱ͖ۮવݟ͚ͭͨ΍ͭ

ͱ͍͏Θ͚Ͱ4XJGU$POUSJCVUPSσϏϡʔ 4XJGUίϯύΠϥͷษڧࣗମ͸ڈ೥͔Β w ίϯύΠϥશൠͷษڧ΋΍ͬͯͨ w ͦͬͪ͸໾ʹཱ͔ͬͨ͸ඍົ

4XJGUίϯύΠϥͷษڧʹ͍ͭͯ ׂ̑͘Β͍͸ಠֶͰ΍ͬͨ ׂ̑͘Β͍͸Θ͍Θ͍TXJGUDͱ͔Ͱษڧ w ݄̍ͷ4XJGUίϯύΠϥͷษڧձ w աڈͷษڧձͷࢿྉಡΜͩΓ w ؔ࿈͢ΔํͷࢿྉΛಡΜͩΓ

ϞνϕͬͯԿʁ ஌త޷ح৺ͷෝ͘··ʹ΍͍ͬͯΔ w ೥͕Β೥தϞνϕ͋ΔΘ͚Ͱ͸ͳ͍ ࢓ࣄͰ4XJGU࢖͍ͬͯΔ෼ਂ͘஌Γ͍͔ͨΒ ͋ͱͦͷ஌ࣝͰΈΜͳͱΘ͍Θ͍͢Δͷָ͍͠

4XJGUίϯύΠϥͷೖ໳ͱ͍͑͹ ͜ͷίϯύΠϥͷϑϩʔਤ w ίϯύΠϥ΍Δͱ਌ͷإΑΓ΋ݟΔӋ໨ʹͳΔ

4XJGUίϯύΠϥͷೖ໳ͱ͍͑͹ ๻͸4XJGU*OUFSNFEJBUF-BOHVBHF͔Β w 4XJGUͷதؒදݱݴޠ

4XJGU*OUFSNFEJBUF-BOHVBHF 4XJGUͷಛ༗ͷதؒදݱ w ௨শ4*- ίʔυΛந৅ߏจ໦ʢ"45ʣʹͨ͠ޙͷϑΣʔζ 3VTUʹ΋ಉ͡Α͏ͳதؒදݱ͕͋Δ

ͳͥ4*-͔Βͳͷ͔ TXJGUDͷίʔυҾͬுΒΜͯ͘΋͍͍ 4*-͸͓खݩͰ͔ΜͨΜʹੜ੒Ͱ͖Δ 4*-Λ࠷దԽ͢ΔίϯύΠϥͷίʔυ͸ಡΈ΍͍͢ w TXJGUDͷதͰൺֱతͱ͍͏ҙຯ ೔ຊਓ͕Α͘4*-Λղઆ͍ͯ͠ΔͷͰจݙ๛෋

4XJGU͔Β4*-Λੜ੒͢Δ w ҎԼͷίϚϯυͰม׵Ͱ͖Δ swiftc -emit-sil hello.swift -o hello.sil w ҎԼͷίʔυΛม͑ͯΈΔ
print(“Hello SIL!”)

ಡΊͳ͍ɾɾɾʁ

Ͱ΋େৎ෉ LJUBTVLF͞Μͱ͍͏ํ͕ղઆ͍ͯ͠Δ IUUQTXXXTMJEFTIBSFOFULJUBTVLFTJMGPSpSTUUJNFMFBOFST

Ͱ΋େৎ෉ LJUBTVLF͞Μͱ͍͏ํ͕ຊΛॻ͍͍ͯΔ IUUQTLJUBTVLFCPPUIQNJUFNT

๻ͷ4*-ͷษڧ๏ ͖ͬ͞঺հͨ͠ຊͱࢿྉಡΈړͬͨ ͍ΖΜͳ4XJGUίʔυΛ4*-ʹͯ͠ಡΜͩ 4*-ͷߏ଄Λཧղͨ͠

๻ͷ4*-ͷษڧ๏ 4*-͕ಡΊΔΑ͏ʹͳͬͨ ͢Δͱ4*-0QUJNJ[FS͕ಡΊΔΑ͏ʹͳΔ͜ͱʹؾͮ͘

4*-0QUJNJ[FS ͖ͬ͞ͷ4*-Λ࠷దԽ͢ΔίϯύΠϥͷϞδϡʔϧ 4XJGUಛ༗ͷ࠷దԽΛߦ͏

4*-0QUJNJ[FSʹؔͯ͠΋ ͜ͷຊ͕ࢀߟʹͳΔ IUUQTLJUBTVLFCPPUIQNJUFNT

࣍͸4*-0QUJNJ[FS ͜ͷ͜Ζ͔Βࣗ෼ͰίϯύΠϥΛHJUDMPOFͨ͠ ίϯύΠϥͷίʔυΛ࿔ͬͯࣗ෼ͷ0QUJNJ[FS࡞ͬͨ

4*-0QUJNJ[FSͷษڧ ͦͷ࣌ͷ๻ͷղઆಈը͕͜Ε IUUQTXXXZPVUVCFDPNXBUDI W2#9D$5GXZ;

࣍͸0QUJNJ[FSͷதͷ࢓૊Έ͕ؾʹͳΔ ʮ෭࡞༻ͷ͋ΔίʔυʯΛൃݟ͢Δ࢓૊Έ w ͜Ε͕ؾʹͳΓ͗ͯ͢͠ΐ͏͕ͳ͍ͷͰௐࠪ

ʮ෭࡞༻ͷ͋ΔίʔυʯΛൃݟ͢Δ࢓૊Έ ΜͰ͜Εʹ͍ͭͯొஃ IUUQTTQFBLFSEFDLDPNGSFEEJNBZIBWFTJEFF⒎FDU

͜ͷௐࠪΛ௨ͯ͡ۮવόάΛݟ͚ͭΔ ͦΕ͕͖ͬ͞ͷ̎ͭͷBQQMFTXJGU΁ͷ13 ҙ֎ͳͱ͜Ζͷௐ͕͖͔͚ࠪͬͯ$POUSJCVUF

͑ɺ$POUSJCVUFͨ͠ͷӡήʔ͡ΌΜ ͦ͏Ͱ΋ͳ͍ؾ͕͢Δ w (JUIVCʹ͋Δެࣜͷ4*-ͷղઆΨόΨό w '*9.&ͱ͔ҙ֎ͱࢸΔͱ͜Ζʹ͋Δ w νϟϯϨϯδͷՄೳੑ͸ແݶେ

$POUSJCVUFνϟϯεɺଞʹ͸ʁ IUUQTCVHTTXJGUPSHͱ͔όάใࠂͨ͘͞Μ͋Δ

͓લͷೖ໳ͬ͘͟Γ͗ͯ͢͠Θ͔ΒΜ LJUBTVLF͞Μ͕ຊΛ SZ IUUQTLJUBTVLFCPPUIQNJUFNT

ࣗ৴͕͍ͭͯདྷͯ΋ɺࣗ৴͕ͳͯ͘΋ Θ͍Θ͍TXJGUDʹࢀՃͯ͠Ͷʂొஃେ׻ܴ IUUQTJPTEJTDPSEDPOOQBTTDPN

·ͱΊ 4XJGUίϯύΠϥ͸ҙ֎ͱೖ໳͠΍͍͢Α Θ͍Θָ͍͘͠ษڧ͢Δͱ͍͔ͭ$POUSJCVUFͰ͖ΔΑ Θ͍Θ͍TXJGUDੋඇࢀՃͯ͠Ͷʢొஃ΋ʂʣ

SwiftコンパイラにContributeする

SwiftコンパイラにContributeする

freddi(Yuki Aki)

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4XJGUίϯύΠϥʹ $POUSJCVUF͢Δ·Ͱ Swift愛好会 Vol. 54 "QQMF͕։ൃͨ͠ΦʔϓϯιʔεͳίϯύΠϥʹߩݙ͢Δ GSFEEJ <ొஃऀ> ͔ΜͨΜͳ 4XJGUͷਂ͍ϨΠϠʔͷಡΈา͖ํ

GSFEEJ ొஃऀ ʹ͍ͭͯ ΠΩϦJ04&OHJOFFS

ࠓ೔͸ॳ৺ऀ޲͚ͷίϯύΠϥͷ࿩ ๻͕$POUSJCVUF͢Δ·ͰʹͲΜͳ͜ͱ΍͔ͬͨ w Ͳ͏͍͏஌ࣝΛಘ͔ͨ w Ͳ͏͍͏ΞΫγϣϯΛ͔ͨ͠

୯౛௚ೖʹݴ͑͹ 4XJGUίϯύΠϥʹ$POUSJCVUF͠·ͨ͠ w IUUQTHJUIVCDPNBQQMFTXJGUQVMM w IUUQTHJUIVCDPNBQQMFTXJGUQVMM

ԿΛ$POUSJCVUFͨ͠ͷʁ Ұͭ͸%PDTͷϛεͷగਖ਼ w 4XJGUͷதؒදݱͷ(SBNNFS͕ϛεͬͯͨ ΋͏Ұͭ͸࠷దԽϩδοΫͷόά w ੲɺొஃࢿྉ࡞ͬͯͨͱ͖ۮવݟ͚ͭͨ΍ͭ

ͱ͍͏Θ͚Ͱ4XJGU$POUSJCVUPSσϏϡʔ 4XJGUίϯύΠϥͷษڧࣗମ͸ڈ೥͔Β w ίϯύΠϥશൠͷษڧ΋΍ͬͯͨ w ͦͬͪ͸໾ʹཱ͔ͬͨ͸ඍົ

4XJGUίϯύΠϥͷษڧʹ͍ͭͯ ׂ̑͘Β͍͸ಠֶͰ΍ͬͨ ׂ̑͘Β͍͸Θ͍Θ͍TXJGUDͱ͔Ͱษڧ w ݄̍ͷ4XJGUίϯύΠϥͷษڧձ w աڈͷษڧձͷࢿྉಡΜͩΓ w ؔ࿈͢ΔํͷࢿྉΛಡΜͩΓ

ϞνϕͬͯԿʁ ஌త޷ح৺ͷෝ͘··ʹ΍͍ͬͯΔ w ೥͕Β೥தϞνϕ͋ΔΘ͚Ͱ͸ͳ͍ ࢓ࣄͰ4XJGU࢖͍ͬͯΔ෼ਂ͘஌Γ͍͔ͨΒ ͋ͱͦͷ஌ࣝͰΈΜͳͱΘ͍Θ͍͢Δͷָ͍͠

4XJGUίϯύΠϥͷೖ໳ͱ͍͑͹ ͜ͷίϯύΠϥͷϑϩʔਤ w ίϯύΠϥ΍Δͱ਌ͷإΑΓ΋ݟΔӋ໨ʹͳΔ

4XJGUίϯύΠϥͷೖ໳ͱ͍͑͹ ๻͸4XJGU*OUFSNFEJBUF-BOHVBHF͔Β w 4XJGUͷதؒදݱݴޠ

4XJGUOUFSNFEJBUF-BOHVBHF 4XJGUͷಛ༗ͷதؒදݱ w ௨শ4- ίʔυΛந৅ߏจ໦ʢ"45ʣʹͨ͠ޙͷϑΣʔζ 3VTUʹ΋ಉ͡Α͏ͳதؒදݱ͕͋Δ

ͳͥ4-͔Βͳͷ͔ TXJGUDͷίʔυҾͬுΒΜͯ͘΋͍͍ 4-͸͓खݩͰ͔ΜͨΜʹੜ੒Ͱ͖Δ 4-Λ࠷దԽ͢ΔίϯύΠϥͷίʔυ͸ಡΈ΍͍͢ w TXJGUDͷதͰൺֱతͱ͍͏ҙຯ ೔ຊਓ͕Α͘4-Λղઆ͍ͯ͠ΔͷͰจݙ๛෋

4XJGU͔Β4*-Λੜ੒͢Δ w ҎԼͷίϚϯυͰม׵Ͱ͖Δ swiftc -emit-sil hello.swift -o hello.sil w ҎԼͷίʔυΛม͑ͯΈΔ

ಡΊͳ͍ɾɾɾʁ

Ͱ΋େৎ෉ LJUBTVLF͞Μͱ͍͏ํ͕ղઆ͍ͯ͠Δ IUUQTXXXTMJEFTIBSFOFULJUBTVLFTJMGPSpSTUUJNFMFBOFST

Ͱ΋େৎ෉ LJUBTVLF͞Μͱ͍͏ํ͕ຊΛॻ͍͍ͯΔ IUUQTLJUBTVLFCPPUIQNJUFNT

๻ͷ4-ͷษڧ๏ ͖ͬ͞঺հͨ͠ຊͱࢿྉಡΈړͬͨ ͍ΖΜͳ4XJGUίʔυΛ4-ʹͯ͠ಡΜͩ 4*-ͷߏ଄Λཧղͨ͠

๻ͷ4-ͷษڧ๏ 4-͕ಡΊΔΑ͏ʹͳͬͨ ͢Δͱ4*-0QUJNJ[FS͕ಡΊΔΑ͏ʹͳΔ͜ͱʹؾͮ͘

4-0QUJNJ[FS ͖ͬ͞ͷ4-Λ࠷దԽ͢ΔίϯύΠϥͷϞδϡʔϧ 4XJGUಛ༗ͷ࠷దԽΛߦ͏

4*-0QUJNJ[FSʹؔͯ͠΋ ͜ͷຊ͕ࢀߟʹͳΔ IUUQTLJUBTVLFCPPUIQNJUFNT

࣍͸4*-0QUJNJ[FS ͜ͷ͜Ζ͔Βࣗ෼ͰίϯύΠϥΛHJUDMPOFͨ͠ ίϯύΠϥͷίʔυΛ࿔ͬͯࣗ෼ͷ0QUJNJ[FS࡞ͬͨ

4*-0QUJNJ[FSͷษڧ ͦͷ࣌ͷ๻ͷղઆಈը͕͜Ε IUUQTXXXZPVUVCFDPNXBUDI W2#9D$5GXZ;

࣍͸0QUJNJ[FSͷதͷ࢓૊Έ͕ؾʹͳΔ ʮ෭࡞༻ͷ͋ΔίʔυʯΛൃݟ͢Δ࢓૊Έ w ͜Ε͕ؾʹͳΓ͗ͯ͢͠ΐ͏͕ͳ͍ͷͰௐࠪ

ʮ෭࡞༻ͷ͋ΔίʔυʯΛൃݟ͢Δ࢓૊Έ ΜͰ͜Εʹ͍ͭͯొஃ IUUQTTQFBLFSEFDLDPNGSFEEJNBZIBWFTJEFF⒎FDU

͜ͷௐࠪΛ௨ͯ͡ۮવόάΛݟ͚ͭΔ ͦΕ͕͖ͬ͞ͷ̎ͭͷBQQMFTXJGU΁ͷ13 ҙ֎ͳͱ͜Ζͷௐ͕͖͔͚ࠪͬͯ$POUSJCVUF

͑ɺ$POUSJCVUFͨ͠ͷӡήʔ͡ΌΜ ͦ͏Ͱ΋ͳ͍ؾ͕͢Δ w (JUIVCʹ͋Δެࣜͷ4-ͷղઆΨόΨό w '9.&ͱ͔ҙ֎ͱࢸΔͱ͜Ζʹ͋Δ w νϟϯϨϯδͷՄೳੑ͸ແݶେ

$POUSJCVUFνϟϯεɺଞʹ͸ʁ IUUQTCVHTTXJGUPSHͱ͔όάใࠂͨ͘͞Μ͋Δ

͓લͷೖ໳ͬ͘͟Γ͗ͯ͢͠Θ͔ΒΜ LJUBTVLF͞Μ͕ຊΛ SZ IUUQTLJUBTVLFCPPUIQNJUFNT

ࣗ৴͕͍ͭͯདྷͯ΋ɺࣗ৴͕ͳͯ͘΋ Θ͍Θ͍TXJGUDʹࢀՃͯ͠Ͷʂొஃେ׻ܴ IUUQTJPTEJTDPSEDPOOQBTTDPN

·ͱΊ 4XJGUίϯύΠϥ͸ҙ֎ͱೖ໳͠΍͍͢Α Θ͍Θָ͍͘͠ษڧ͢Δͱ͍͔ͭ$POUSJCVUFͰ͖ΔΑ Θ͍Θ͍TXJGUDੋඇࢀՃͯ͠Ͷʢొஃ΋ʂʣ