Kotlinの短絡評価について

Transcript

1. $POOFIJUP
   *OD ϚϚͷҰาΛࢧ͑Δ ,PUMJOͷ୹བྷධՁʹ͍ͭͯ

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

3. αʔϏε঺հ ϚϚϦ

4. ಥવͰ͕͢ɺ࣍ͷͭͷ,PUMJOίʔυͷҧ͍͕ Θ͔Γ·͔͢ʁ

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

   { }

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

   { } ಉ͡Α͏ʹݟ͑Δ͕࣮͸ҟͳΔڍಈ

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

   false) { }

8. ຊ೔͸,PUMJOͷ୹བྷධՁʹ͍ͭͯ

9. ૣ଎ʮPSʯɺʮBOEʯͷίʔυΛ೷͍ͯΈΔ

10. IUUQTHJUIVCDPN+FU#SBJOTLPUMJOCMPC NBTUFSDPSFCVJMUJOTOBUJWFLPUMJO#PPMFBOLU

11. IUUQTHJUIVCDPN+FU#SBJOTLPUMJOCMPC NBTUFSDPSFCVJMUJOTOBUJWFLPUMJO#PPMFBOLU UIJT
    GVODUJPO
    EPFT
    OPU
    TIPSUDJSDVJU
    FWBMVBUJPO

12. ୹བྷධՁ TIPSUDJSDVJU
    FWBMVBUJPO ͱ͸ʁ

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

14. if (true || false) { } ୹བྷධՁ

15. if (true || false) { } ୹བྷධՁ

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

17. ҰํͰ௨ৗͷ࿦ཧԋࢉࢠ͸ʁ

18. ௨ৗͷ࿦ཧԋࢉࢠ if (true or false) { }

19. if (true or false) { } ௨ৗͷ࿦ཧԋࢉࢠ

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

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

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

23. ௨ৗͷ࿦ཧԋࢉࢠͷར༻ํ๏͸ʁ

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

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

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

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

28. +BWBͱ,PUMJOൺֱ

29. ·ͱΊ

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

31. ͋Γ͕ͱ͏͍͟͝·ͨ͠ʂ