CarbonとMutableオブジェクトの話

by Ryo Tomidokoro

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CarbonͱMutableΦϒδΣΫτͷ࿩ 1)1ษڧձ

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໊લ෋ॴ྄ 3ZP5PNJEPLPSP ৬ۀ8FC"QQMJDBUJPO&OHJOFFS ॴଐ*OOPWBUPS+BQBO*OD ࡶ༻୲౰ झຯόεέοτϘʔϧ؍ઓ

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Carbonͱ͸ʁ

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$BSCPOͱ͸ʁ Carbon - A simple PHP API extension for DateTime. DateTimeΫϥεͷAPI֦ு IUUQTDBSCPOOFTCPUDPN

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$BSCPOͱ͸ʁ ศར ௚ײతͰ෼͔Γ΍͍͢ ๛෋ͳAPIͱυΩϡϝϯτ

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MutableΦϒδΣΫτͱ͸ʁ

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.VUBCMFΦϒδΣΫτͱ͸ʁ MutableΦϒδΣΫτ ͦͷঢ়ଶΛม͑Δ͜ͱ͕ग़དྷΔΦϒδΣΫτ ImmutableΦϒδΣΫτ ͦͷঢ়ଶΛม͑Δ͜ͱ͕ग़དྷͳ͍ΦϒδΣΫτ ࢀর) Πϛϡʔλϒϧ - Wikipedia | https://ja.wikipedia.org/wiki/Πϛϡʔλϒϧ

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ຊ೔ͷେࣄͳςʔϚ

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ຊ೔ͷॏཁࣄ߲ 1. CarbonΛ௨ͯ͡MutableɺImmutableΛ֮͑Α͏ ಛʹImmutableͷ֓೦͸ͱͯ΋େ੾ 2. CarbonͷίʔυϨϏϡʔྗUP Carbon͸࣌ʹةݥͳίʔυΛੜΈग़͢ ৯͍ࢭΊ·͠ΐ͏ʂ

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ຊ೔ͷॏཁࣄ߲ ͔͠͠ɺී௨ʹίʔυྫΛಡΜͰ΋๞͖ΔͷͰ… ΫΠζܗࣜͰίʔυϨϏϡʔͯ͠Έ·͠ΐ͏ʂ

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CarbonΫΠζ

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$BSCPOΫΠζ A܅͸usersςʔϒϧʹొ࿥͞ΕͨϢʔβσʔλͷத ͔Βɺ࠷ۙ̏ϲ݄Ҏ಺ʹొ࿥͞ΕͨϢʔβσʔλΛ நग़͢ΔॲཧΛ࡞Δ͜ͱʹͳΓ·ͨ͠ɻ ͔͠͠ɺA܅͕࡞੒ͨ͠ϓϩάϥϜʹ͸໰୊͕͋ͬ ͯਖ਼͘͠ϢʔβσʔλΛநग़Ͱ͖·ͤΜͰͨ͠ɻ

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$BSCPOΫΠζ ࣍ͷίʔυͷԿߦ໨ʹ໰୊͕͋ΔͰ͠ΐ͏͔ʁ ͦͯ͠ɺͦΕ͸ԿނͰ͠ΐ͏͔ʁ

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$BSCPOΫΠζ ࣮ࡍͷϓϩάϥϜʢൈਮʣ 1. Կߦ໨͕໰୊ʁ 2. Կ͕໰୊ʁ

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CarbonΫΠζ - ղ౴ฤ

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$BSCPOΫΠζ 1. Կߦ໨͕໰୊ʁ -> 14ߦ໨ 2. Կ͕໰୊ʁ -> subMonthϝιουͰ$todayࣗମ΋มߋ͞Εͯ͠·͏

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CarbonΫΠζ - ໛ൣղ౴1

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$BSCPOΫΠζ copy()ϝιουΛ࢖͏ $todayͷෳ੡Λ࡞Δ͜ͱͰɺ$todayࣗମͷมߋΛආ͚Δ

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CarbonΫΠζ - ໛ൣղ౴2

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$BSCPOΫΠζ Carbon2 CarbonImmutableͳΒɺ$today͸ImmutableͳͷͰෆม

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$BSCPOΫΠζ Carbon2 AliasΛ࢖͑͹ɺϓϩάϥϜͷมߋແ͠ɻ

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·ͱΊ

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·ͱΊ ɾCarbon͸ѱ͘ͳ͍ ɾAPI֦ுͷੑ࣭Λ͖ͪΜͱ೺Ѳ͢Δ͜ͱ ɾMutable, ImmutableΦϒδΣΫτΛ֮͑Α͏

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͓·͚

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$BSCPOͱ$BSCPO MutableΦϒδΣΫτ ImmutableΦϒδΣΫτ ɾCarbon1ܥ ɾDateTimeΫϥεͷ֦ுAPI ɾCarbon2ܥ ɾDateTimeImmutableΫϥεͷ֦ுAPI

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%BUF5JNF*NNVUBCMFΫϥε ࢀর) PHPϚχϡΞϧ | http://php.net/manual/ja/class.datetimeimmutable.php