iOSとAndroidで共通のc++のコードを使いたいけど厳しかった話

2015/08/29 社内勉強会(chocotips)用

Transcript

1. 6TFT
   $
   GPS
   $SPTT 1MBUGPSN
   J04
   BOE
   "OESPJE
   %FWFMPQNFOU 2015/08/29 @__chocomelon
2. Ϟνϕʔγϣϯ w J04΋"OESPJE࡞Γ͍ͨ
   w ಉ͡ϩδοΫॻ͘ͷ͕ΊΜͲ͍
3. ஌Βͳ͍ਓͷͨΊʹ
   ͓͞Β͍
4. D
   DBMM
   GSPN
   4XJGU w 4XJGU͔Β͸௚઀ݺ΂ͳ͍
   w 4XJGU0CKFDUJWF$ NN D ͰݺͿ
   w ͪΐͬͱΊΜͲ͍͘͞
5. )FMMP 8SBQQJOHTXJGU extension Hello { class func hello() { Hello.helloFromNative() } } )FMMPNN @implementation Hello + (void)helloFromNative { return Hello::hello(); } @end )FMMPDQQ void Hello::hello() { printf("Hello"); }
6. D
   DBMM
   GSPN
   +BWB w "OESPJE
   4UVEJP
   
   
   (SBEMF
   Ͱ TVQQPSU
   
   w /%,Λ࢖ͬͯD ΛݺͿ
   w +/*ͳͷͰD ͷίʔυΛ+/*Ͱѻ͑Δܗʹ͢Δ ඞཁ͕͋Δʢ'VDLʣ
   w ͍ͩͿΊΜͲ͍͘͞
   
7. )FMMPKBWB public class Hello {
 
 public static String hello() {
 return helloFromJNI();
 }
 
 public static native String helloFromJNI();
 
 static {
 System.loadLibrary("Hello-JNI");
 }
 } )FMMP+/*DQQ #include <jni.h>
 
 extern "C" {
 JNIEXPORT jstring Java_com_example_hellojni_Utils_stringFromJNI(JNIEnv *env, jobject thiz) {
 return env->NewStringUTF("Hello from JNI!");
 }
 }
8. ࠔͬͨ͜ͱ w D Ͱѻ͑ΔΑ͏ʹUZQFΛௐ੔
   w ྫ͑͹4XJGUͷ*OU͸CJU؀ڥͰ͸*OUɺ CJUͰ͸*OUʹͳΔͷͰ*OUʹͯ͠౉͢
   w ྫ͑͹D ͩͱଟ࣍ݩ഑ྻͷѻ͍͕೉͍͠ͷͰ ࣍ݩ഑ྻʹ௚ͨ͠Γ
9. ࣮ࡍͷίʔυྫ
   J04ฤ
10. -PHJD6UJMT 8SBQQJOHTXJGU extension LogicUtil { class func isStep(map: [[Int32]], characterPoint: Point, direction: Direction) -> Bool { let numberOfSquares: Int = map.count let charaIndex: Int = characterPoint.x + characterPoint.y * numberOfSquares var mapIntArray: [Int32] = [] for y in 0..<numberOfSquares { for x in 0..<numberOfSquares { mapIntArray.append(map[y][x]) } } return LogicUtil.isStep(UnsafeMutablePointer<Int32>(mapIntArray), numOfSquares: Int32(numberOfSquares), charaIndex: Int32(charaIndex), direction: Int32(direction.rawValue)) } }
11. -PHJD6UJMT 8SBQQJOHTXJGU extension LogicUtil { class func isStep(map: [[Int32]], characterPoint: Point, direction: Direction) -> Bool { let numberOfSquares: Int = map.count let charaIndex: Int = characterPoint.x + characterPoint.y * numberOfSquares var mapIntArray: [Int32] = [] for y in 0..<numberOfSquares { for x in 0..<numberOfSquares { mapIntArray.append(map[y][x]) } } return LogicUtil.isStep(UnsafeMutablePointer<Int32>(mapIntArray), numOfSquares: Int32(numberOfSquares), charaIndex: Int32(charaIndex), direction: Int32(direction.rawValue)) } }
12. -PHJD6UJMTNN + (bool)isStep:(int[])map numOfSquares:(int)numOfSquares charaIndex: (int)charaIndex direction:(int)direction { return Logic::isStepToDirection(map, numOfSquares, charaIndex, direction); }
13. ΊΜͲ͍
14. ͞Βʹࠔͬͨ͜ͱ w "OESPJEଆ͕+/*ͳͷͰD ͷίʔυΛ+/*Ͱѻ ͑Δܗʹ͢Δඞཁ͕͋ͬͯͦͷ··D ࢖͑ͳ͍
    w ຐ๏εΫϦϓτΛॻ͍ͯࣗಈੜ੒ʁ
    w "OESPJE+/"4XJH+/*ʁ
15. ݫ͍͠
16. ·ͱΊ w ͪΐͼͬͱͷ-PHJDڞ௨ԽͷͨΊʹD ࢖͏ͷ͸ ϊʔνϟϯ
    w ͋͘·Ͱڞ௨Խ͢Δͷ͸ָ͢Δͷϝϯςφϯεੑ ޲্ͷͨΊɺࠓճͷέʔεͰ͸ഁ୼͍ͯ͠Δɻ
    w ΋ͬͱؾܰʹ΍Βͤͯཉ͍͠
17. ࠓޙ w DPDPTEYͱ͔6OJUZࢼ͍ͨ͠
    w ͱ΋͍͑ɺDPDPTEYͱ͔6OJUZ͸୯ಠͷ*%&։ ൃʹͳΔ͔ΒήʔϜدΓʹͳͬͯ͠·͏ʢϩδο Ϋ͚ͩD Ͱڞ௨Խͱ͍͏༻్ʹ͸࢖͑ͳ͍ʣ
    w ۀ຿తʹ΋஌ݟ͕ଟ͍͜ͱ͕͍ͨ͠
    w ͳͷͰࢼͯ͠͸Έ͍͕ͨϞνϕʔγϣϯ௿Ί