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First step of learning of functional programming.
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hiroki-kaneko
January 31, 2016
Programming
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First step of learning of functional programming.
hiroki-kaneko
January 31, 2016
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Transcript
ؔϓϩάϥϛϯάΛ ͘͠ߟ͑ͣʹղઆ͢Δ ۚࢠ߂थ
w +BWB $ +BWB4DSJQUͳͲ࠷ۙͷݴޠΛ͓͍ͷํ w ͋ͳͨطʹؔϓϩάϥϛϯάΛ͍ͯ͠·͢ʂ w $ $ ͳͲͷڃݴޠΛ͓͍ͷํ
w Γ͋ͳͨؔϓϩάϥϛϯάΛ͍ͯ͠· ͢ʂ w ΈࠐΈΤϯδχΞͷํ w ͏ʔΜʜ͔Βͳ͍ͷͰৄ͍͠ํʹฉ͍ͯͶ
w ͦͷূڌʹɺ͋ͳ͍ͨͭؔΛ͍ͬͯ·͢ w +BWBͳΒϝιουͱ͍͏໊લ͔͠Ε·ͤΜ w ҾΛऔͬͯɺ݁ՌΛฦ͠·͢ w ؔΛΈ߹ΘͤͯॲཧΛ͜ͳ͢ͷ͕ؔϓϩάϥ ϛϯάͰ͢ w
͍ͭͬͯΔͰ͠ΐʁ
w ߦّͷྑ͍ίʔσΟϯάΛ͍ͯ͠·͔͢ʁ w ͑͑ w ྫ͑ʁ w άϩʔόϧมΛΘͳ͍ͰมείʔϓΛͰ͖Δ ͚ͩڱΊ·͢ɻϩʔΧϧมɺΠϯελϯεมʜ w
ͦΕ͕ؔϓϩάϥϛϯάͰ͢Α w ͑ͬʁ
w ߴ֊ؔͱ͔Ϋϩʔδϟͱ͔ΧϦʔԽ͕Ͳ͏ͰϥϜ μ͕ࣜͲ͏ͱ͔͍͏খ͍͠ԿͰ͔͢ʁ w ͦΜͳϞϯޙͰௐͯԼ͍͞ɻ ؔϓϩάϥϛϯάͷํ๏ͱརɺ͚ܽͩࠓ͔Β આ໌͠·͢
ؔϓϩάϥϛϯάͷํ๏ w ؔΛॻ͘ w ؔҾΛऔΓɺΓΛฦ͢ w ؔͷΓҾʹΑܾͬͯ·Δ w ݁Ռ͕༧ଌͰ͖ͳ͍ϑΝΠϧɺωοτϫʔΫೖྗΛॻ ͔ͳ͍ดͨ͡ੈքͱ͢Δ
w ͜ΕΒͷখ͞ͳؔΛΈ߹Θͤͯେ͖ͳॲཧΛ͜ͳ ͢
ؔϓϩάϥϛϯάͷར w લड़ͷϧʔϧΛकͬͨؔͷʜ w ςετίʔυΛॻ͘ͷ؆୯Ͱ͋Δ w ఆ֎ͷಈ࡞Λ͠ͳ͍ࣄ͕อূ͞ΕΔ
ؔϓϩάϥϛϯάͷܽ w ͚ؔͩͰશͯࣄΓΔΘ͚͡Όͳ͍ w ֎෦ͷάϩʔόϧมΛ͍͍ͨ࣌͋Δ w ϑΝΠϧΩʔɺωοτϫʔΫೖग़ྗͳ͠ͰԿ ॻ͚ͳ͍ w ࣄલ༧ଌ͕Ͱ͖࣮ͣߦ࣌ʹ͔͔͠Βͳ͍ಈ࡞Λ
෭࡞༻ TJEFF⒎FDU ͱ͍͏
–Haskellڞࠃ ࡋ l෭࡞༻༻ࡑͩʂz -BOEPG-JTQ $POSBE#SBTLJ .%ஶ߹࢙༁ΦϥΠϦʔɾδϟύϯץΑΓൈਮ
w ؔܕͷॲཧͱɺ෭࡞༻Λ͏ॲཧ͚ͯॻ͘ w ៉ྷͳੈքͱԚ͍ੈքͷ w ςετίʔυΛֻ͚៉ྷͳੈքͷಈ࡞อূ͞Ε Δ w શͯؔܕͰॻ͘ݴޠ͋Δɻ)BTLFMMͳͲ w
+BWB-JTQͰੈքΛ࣮ͯ͠༻తͳॲཧΛ͜ ͳ͢
w Ͳ͏ʁΘ͔ͬͨʁ w ͥΜͥΜ w ͕ࣗීஈͬͯΔࣄ͕ؔϓϩάϥϛϯάͩͱ͍ ͏ࣄ͔ͬͨͰ͠ΐʁ w ͑͑ w
ͦ͜·Ͱ͔Ε͋ͱࣗͰֶशͰ͖Δͣ ͓ΘΓ