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第2回 スタートHaskell2 3. 関数の構文
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mizu__tama
July 22, 2012
Programming
2
580
第2回 スタートHaskell2 3. 関数の構文
mizu__tama
July 22, 2012
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Transcript
ୈষ ؔͷߏจ !NJ[V@@UBNB ਫचق 127݄22༵
ؔΛॻͨ͘Ίͷߏจ wύλʔϯϚον wΨʔυ wXIFSFઅ wMFUࣜ wDBTFࣜ 127݄22༵
ؔΛॻͨ͘Ίͷߏจ wύλʔϯϚον wΨʔυ wXIFSFઅ wMFUࣜ wDBTFࣜ 127݄22༵
ύλʔϯϚον w ύλʔϯʹैͬͯσʔλΛ ղ͢ΔͨΊʹ͏ w ɺจࣈɺϦετɺλϓϧͳͲ ༷ʑͳσʔλܕͰ͑Δ 127݄22༵
ύλʔϯϚον w্͔ΒॱʹධՁ͢Δ wYҙͷʹ߹க ύλʔϯϚον 127݄22༵
ύλʔϯϚον w্͔ΒॱʹධՁ͞ΕΔ wYҙͷʹ߹க ύλʔϯϚον Ӭԕʹ ΘΕͳ͍ 127݄22༵
ύλʔϯϚον wYؔຊମͰࢀরͰ͖Δ ύλʔϯϚον 127݄22༵
࠶ؼͱύλʔϯϚον OOº O w࠶ؼతͳؔͷఆٛʹ ύλʔϯϚονΛ͏ wৄ͘͠ষͰ 127݄22༵
ύλʔϯϚονͷࣦഊ ύλʔϯ͕ ཏతͰͳ͍Α 127݄22༵
ͪͳΈʹ<Q༁> ITϑΝΠϧͷઌ಄ʹ͚͓ͭͯ͘ͱ ͍Ζ͍Ζܯࠂͯ͘͠ΕΔ 127݄22༵
λϓϧͷύλʔϯϚον λϓϧͷཁૉΛղͯ͠ దͳ໊લΛ͚ͭΔ 127݄22༵
λϓϧͷύλʔϯϚον λϓϧͷཁૉΛղͯ͠ దͳ໊લΛ͚ͭΔ ύλʔϯϚονΛ ͏ͱಡΈ͍͢ 127݄22༵
ϦετͷύλʔϯϚον ϦετแදهͰύλʔϯϚον wࣦഊͨ͠Β࣍ͷཁૉʹਐΉ wࣦഊͨ͠ཁૉ݁ՌͷϦετʹ ؚ·Εͳ͍ 127݄22༵
ϦετͷύλʔϯϚον wۭϦετ<> wΛؚΉύλʔϯ ʢYYTɼYZZTɼYZ<>ͳͲʣ w ԋࢉࢠ͑ͳ͍ YT ZT
127݄22༵
ϦετͷύλʔϯϚον wۭϦετ<> wΛؚΉύλʔϯ ʢYYTɼYZZTɼYZ<>ͳͲʣ w ԋࢉࢠ͑ͳ͍ YT ZT
ΛΕͣʹʂ 127݄22༵
BTύλʔϯ Λύλʔϯʹղͭͭ͠ɺ ύλʔϯϚονͷରʹͳͬͨ ࣗମࢀর͍ͨ͠ͱ͖ʹ͏ɻ શମͷ໊લˏී௨ͷύλʔϯ 127݄22༵
BTύλʔϯ Λύλʔϯʹղͭͭ͠ɺ ύλʔϯϚονͷରʹͳͬͨ ࣗମࢀর͍ͨ͠ͱ͖ʹ͏ɻ l)BTLFMMz `)` lBTLFMMz l)BTLFMMz Y YT
BMM 127݄22༵
BTύλʔϯ Λύλʔϯʹղͭͭ͠ɺ ύλʔϯϚονͷରʹͳͬͨ ࣗମࢀর͍ͨ͠ͱ͖ʹ͏ɻ < >
< > < > Y YT BMM 127݄22༵
ؔΛॻͨ͘Ίͷߏจ wύλʔϯϚον wΨʔυ wXIFSFઅ wMFUࣜ wDBTFࣜ 127݄22༵
Ψʔυ Ҿͷ͕ຬͨ͢ੑ࣭ʹΑͬͯ ߹͚͢Δͱ͖ʹ͏ɻ 127݄22༵
Ψʔυ CNJ5FMM Ҿͷ͕ຬͨ͢ੑ࣭ʹΑͬͯ ߹͚͢Δͱ͖ʹ͏ɻ 127݄22༵
Ψʔυ CNJ5FMM Ҿͷ͕ຬͨ͢ੑ࣭ʹΑͬͯ ߹͚͢Δͱ͖ʹ͏ɻ 127݄22༵
Ψʔυ 'BMTF CNJ5FMM Ҿͷ͕ຬͨ͢ੑ࣭ʹΑͬͯ ߹͚͢Δͱ͖ʹ͏ɻ 127݄22༵
Ψʔυ Ҿͷ͕ຬͨ͢ੑ࣭ʹΑͬͯ ߹͚͢Δͱ͖ʹ͏ɻ CNJ5FMM l:PVSFTVQQPTFEMZOPSNBM1⒎GU *CFUZPVVHMZz 127݄22༵
Ψʔυ Ҿͷ͕ຬͨ͢ੑ࣭ʹΑͬͯ ߹͚͢Δͱ͖ʹ͏ɻ CNJ5FMM l:PVSFTVQQPTFEMZOPSNBM1⒎GU *CFUZPVVHMZz 5SVF 127݄22༵
PUIFSXJTF ͯ͢ΛΩϟον͢Δɻ 127݄22༵
Ψʔυͱύλʔϯ 127݄22༵
Ψʔυͱύλʔϯ ύλʔϯ ύλʔϯ ύλʔϯ ύλʔϯ ݅ ݅ ݅ ݅ 127݄22༵
ؔΛॻͨ͘Ίͷߏจ wύλʔϯϚον wΨʔυ wXIFSFઅ wMFUࣜ wDBTFࣜ 127݄22༵
XIFSFઅ ܭࢉͷதؒ݁Ռʹ໊લΛ͚ͭΔ 127݄22༵
127݄22༵
XIFSFઅ w ෳͷม͕ఆٛͰ͖Δ w Πϯσϯτଗ͑Δ 127݄22༵
XIFSFͷείʔϓ ͻͱͭͷύλʔϯͰͷΈ༗ޮ 127݄22༵
XIFSFͷείʔϓ ͻͱͭͷύλʔϯͰͷΈ༗ޮ ͓͜ΒΕΔʂ 127݄22༵
ύλʔϯϚονͱXIFSF 127݄22༵
ύλʔϯϚονͱXIFSF λϓϧͷ ύλʔϯϚον 127݄22༵
ύλʔϯϚονͱXIFSF λϓϧͷ ύλʔϯϚον Ϧετͷ ύλʔϯϚον 127݄22༵
XIFSFϒϩοΫͷதͷؔ 127݄22༵
XIFSFϒϩοΫͷதͷؔ ఆٛ 127݄22༵
XIFSFϒϩοΫͷதͷؔ ݺͼग़͠ 127݄22༵
ؔΛॻͨ͘Ίͷߏจ wύλʔϯϚον wΨʔυ wXIFSFઅ wMFUࣜ wDBTFࣜ 127݄22༵
MFUࣜ ܭࢉͷதؒ݁Ռʹ໊લΛ͚ͭΔ 127݄22༵
MFUࣜ ܭࢉͷதؒ݁Ռʹ໊લΛ͚ͭΔ தؒ݁Ռ 127݄22༵
MFUࣜ ܭࢉͷதؒ݁Ռʹ໊લΛ͚ͭΔ ࠷ऴ݁Ռ 127݄22༵
MFUࣜ ܭࢉͷதؒ݁Ռʹ໊લΛ͚ͭΔ ࠷ऴ݁Ռ தؒ݁Ռ ࠷ऴ݁Ռ தؒ݁Ռ 127݄22༵
MFUࣜ wʮࣜʯͰ͋ΔΛ࣋ͭ ɹ㱺ίʔυதͷ΄ͱΜͲͲΜͳॴͰ ɹɹ͑Δ 127݄22༵
MFUࣜ wʮࣜʯͰ͋ΔΛ࣋ͭ ɹ㱺ίʔυதͷ΄ͱΜͲͲΜͳॴͰ ɹɹ͑Δ 127݄22༵
MFUࣜͷศརͳ͍ํ wϩʔΧϧείʔϓʹؔΛ࡞Δ wηϛίϩϯͰ۠ͬͯ͏ 127݄22༵
MFUࣜͷศརͳ͍ํ wMFUࣜʴύλʔϯϚον λϓϧΛཁૉʹղ wϦετแදهͰ͏ wग़ྗʢcΑΓલͷ෦ʣ wMFUΑΓޙΖͷϦετแදهͯ͢ ɹ 127݄22༵
()$JͰͷMFU w()$JͰJOͷ෦ΛলུͰ͖Δ wলུ͢Δͱఆ໊ٛͨ͠લ Ҏ߱ͷηογϣϯશମ͔Βݟ͑Δ 127݄22༵
ؔΛॻͨ͘Ίͷߏจ wύλʔϯϚον wΨʔυ wXIFSFઅ wMFUࣜ wDBTFࣜ 127݄22༵
DBTFࣜ wࢦఆͨ͠ʹର͢Δ ίʔυϒϩοΫΛධՁͰ͖Δ wʮࣜʯͰ͋ΔΛ࣋ͭ wύλʔϯϚον͑Δ 127݄22༵
DBTFࣜ 127݄22༵
ؔΛॻͨ͘Ίͷߏจ wύλʔϯϚον wΨʔυ wXIFSFઅ wMFUࣜ wDBTFࣜ 127݄22༵