Kotlinの短絡評価について

Transcript

1. $POOFIJUP*OD
   ϚϚͷҰาΛࢧ͑Δ
   ,PUMJOͷ୹བྷධՁʹ͍ͭͯ
   

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2. ෋ా݈ೋ
   !UPNNZLX
   !UPNNZLX
   ίωώτגࣜձࣾ"OESPJE&OHJOFFS
   

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3. αʔϏε঺հ ϚϚϦ
   
   

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4. ಥવͰ͕͢ɺ࣍ͷͭͷ,PUMJOίʔυͷҧ͍͕
   Θ͔Γ·͔͢ʁ
   

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5. if (true || false) {
   }
   if (true or false) {
   }
   

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6. if (true || false) {
   }
   if (true or false) {
   }
   ಉ͡Α͏ʹݟ͑Δ͕࣮͸ҟͳΔڍಈ
   

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7. ͋Εɺ͜ͷ͕ͭಉ͡ҙຯͩͱࢥ͍ͬͯͨʜʁ
   if (true || false) {
   }
   if (true or false) {
   }
   

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8. ຊ೔͸,PUMJOͷ୹བྷධՁʹ͍ͭͯ
   

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9. ૣ଎ʮPSʯɺʮBOEʯͷίʔυΛ೷͍ͯΈΔ
   

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10. IUUQTHJUIVCDPN+FU#SBJOTLPUMJOCMPC
    NBTUFSDPSFCVJMUJOTOBUJWFLPUMJO#PPMFBOLU
    

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11. IUUQTHJUIVCDPN+FU#SBJOTLPUMJOCMPC
    NBTUFSDPSFCVJMUJOTOBUJWFLPUMJO#PPMFBOLU
    UIJTGVODUJPOEPFTOPUTIPSUDJSDVJUFWBMVBUJPO
    

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12. ୹བྷධՁ TIPSUDJSDVJUFWBMVBUJPO
    ͱ͸ʁ
    

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13. ୹བྷධՁ͸࿦ཧԋࢉࢠͷࠨลɺӈลͷධՁΛ
    ද͢ධՁํ๏Ͱ࠷খධՁͱ΋ݺ͹ΕΔɻ
    

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14. if (true || false) {
    }
    ୹བྷධՁ
    

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15. if (true || false) {
    }
    ୹བྷධՁ
    

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16. if (true || false) {
    }
    ʮUSVFʯ͚ͩධՁ͞ΕΔ
    ୹བྷධՁ
    

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17. ҰํͰ௨ৗͷ࿦ཧԋࢉࢠ͸ʁ
    

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18. ௨ৗͷ࿦ཧԋࢉࢠ
    if (true or false) {
    }
    

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19. if (true or false) {
    }
    ௨ৗͷ࿦ཧԋࢉࢠ
    

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20. if (true or false) {
    }
    ʮUSVFʯ͕ධՁ͞ΕΔ
    ௨ৗͷ࿦ཧԋࢉࢠ
    

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21. if (true or false) {
    }
    ʮUSVFʯ͕ධՁ͞ΕΔ
    ௨ৗͷ࿦ཧԋࢉࢠ
    

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22. if (true or false) {
    }
    ʮUSVFʯ͕ධՁ͞ΕΔ
    ʮGBMTFʯ΋ධՁ͞ΕΔ
    ௨ৗͷ࿦ཧԋࢉࢠ
    

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23. ௨ৗͷ࿦ཧԋࢉࢠͷར༻ํ๏͸ʁ
    

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24. IUUQTHJUIVCDPN+FU#SBJOTLPUMJOCMPCNBTUFSCVJME
    DPNNPOTSDPSHKFUCSBJOTLPUMJOJODSFNFOUBM
    *ODSFNFOUBM+WN$BDIFLU
    

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25. IUUQTHJUIVCDPN+FU#SBJOTLPUMJOCMPCNBTUFSCVJME
    DPNNPOTSDPSHKFUCSBJOTLPUMJOJODSFNFOUBM
    *ODSFNFOUBM+WN$BDIFLU
    

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26. "OESPJEͰͷར༻
    intent.addFlags(
    Intent.FLAG_ACTIVITY_SINGLE_TOP or
    Intent.FLAG_ACTIVITY_CLEAR_TOP
    )
    

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27. "OESPJEͰͷར༻
    intent.addFlags(
    Intent.FLAG_ACTIVITY_SINGLE_TOP or
    Intent.FLAG_ACTIVITY_CLEAR_TOP
    )
    Ϗοτԋࢉͱͯ͠ར༻͍ͯ͠Δ
    

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28. +BWBͱ,PUMJOൺֱ
    

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29. ·ͱΊ
    

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30. w ,PUMJOͷʮPSɺBOEʯ͸ɺʮccɺʯ
    ͱಉ͡ҙຯͰ͸ͳ͍
    w ୹བྷධՁͷ࿦ཧԋࢉࢠɺ௨ৗͷ࿦ཧԋࢉ
    ࢠ͕͋Δ
    

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31. ͋Γ͕ͱ͏͍͟͝·ͨ͠ʂ
    

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