Kotlinの短絡評価について

Slide 1

Slide 1 text

$POOFIJUP*OD ϚϚͷҰาΛࢧ͑Δ ,PUMJOͷ୹བྷධՁʹ͍ͭͯ

Slide 2

Slide 2 text

෋ా݈ೋ !UPNNZLX !UPNNZLX ίωώτגࣜձࣾ"OESPJE&OHJOFFS

Slide 3

Slide 3 text

αʔϏε঺հ ϚϚϦ

Slide 4

Slide 4 text

ಥવͰ͕͢ɺ࣍ͷͭͷ,PUMJOίʔυͷҧ͍͕ Θ͔Γ·͔͢ʁ

Slide 5

Slide 5 text

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

Slide 6

Slide 6 text

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

Slide 7

Slide 7 text

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

Slide 8

Slide 8 text

ຊ೔͸,PUMJOͷ୹བྷධՁʹ͍ͭͯ

Slide 9

Slide 9 text

ૣ଎ʮPSʯɺʮBOEʯͷίʔυΛ೷͍ͯΈΔ

Slide 10

Slide 10 text

IUUQTHJUIVCDPN+FU#SBJOTLPUMJOCMPC NBTUFSDPSFCVJMUJOTOBUJWFLPUMJO#PPMFBOLU

Slide 11

Slide 11 text

IUUQTHJUIVCDPN+FU#SBJOTLPUMJOCMPC NBTUFSDPSFCVJMUJOTOBUJWFLPUMJO#PPMFBOLU UIJTGVODUJPOEPFTOPUTIPSUDJSDVJUFWBMVBUJPO

Slide 12

Slide 12 text

୹བྷධՁ TIPSUDJSDVJUFWBMVBUJPO ͱ͸ʁ

Slide 13

Slide 13 text

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

Slide 14

Slide 14 text

if (true || false) { } ୹བྷධՁ

Slide 15

Slide 15 text

if (true || false) { } ୹བྷධՁ

Slide 16

Slide 16 text

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

Slide 17

Slide 17 text

ҰํͰ௨ৗͷ࿦ཧԋࢉࢠ͸ʁ

Slide 18

Slide 18 text

௨ৗͷ࿦ཧԋࢉࢠ if (true or false) { }

Slide 19

Slide 19 text

if (true or false) { } ௨ৗͷ࿦ཧԋࢉࢠ

Slide 20

Slide 20 text

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

Slide 21

Slide 21 text

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

Slide 22

Slide 22 text

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

Slide 23

Slide 23 text

௨ৗͷ࿦ཧԋࢉࢠͷར༻ํ๏͸ʁ

Slide 24

Slide 24 text

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

Slide 25

Slide 25 text

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

Slide 26

Slide 26 text

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

Slide 27

Slide 27 text

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

Slide 28

Slide 28 text

+BWBͱ,PUMJOൺֱ

Slide 29

Slide 29 text

·ͱΊ

Slide 30

Slide 30 text

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

Slide 31

Slide 31 text

͋Γ͕ͱ͏͍͟͝·ͨ͠ʂ