私とUnityとLINQと

# 私とUnityとLINQと

## @RyotaMurohoshi
### 2014/12/20 プログラミング生放送勉強会 第32回

※もともとはSlideShareで公開していた資料です

1. ࣭໰Ͱ͢ʂ
2. Unity ࢖͍ͬͯΔํʁ
3. C# όϦόϦ࢖͍ͬͯΔํʁ
4. LINQ ஌ͬͯͨํʁ
5. LINQ ࢖͍ͬͯΔํʁ
6. ͋Γ͕ͱ͏͍͟͝·͢
7. ࢲͱUnityͱLINQͱ @RyotaMurohoshi 2014/12/20&ϓϩάϥϛϯάੜ์ૹษڧձ&ୈ32ճ
8. ͖ͬ͞LINQͷ࿩Ͱ·ͨ͠Ͷ (※ࠓ೔͸ɺLINQ&to&Objectsͷ࿩͔͠͠·ͤΜɻ)
9. ͓͞Β͍
10. LINQΛ࢖͏ͱͳʹ͕͍͍͔
11. ίʔυ͕؆ܿʹͳΔɻಡΈ΍͘͢ͳΔɻ
12. ΋͏ͪΐͬͱݴ͏ͱɺ ഑ྻɺϦετɺσΟΫγϣφϦ ͜ΕΒͳͲΛѻ͏ίʔυ͕ ؆ܿʹͳΔɻಡΈ΍͘͢ͳΔɻ
13. ΠϝʔδΘ͖·͢ʁ
14. RPGͷϓϨΠϠʔΛ࢘Δɺ͜ΜͳΫϥε͕͋Δͱͯ͠ɺ public class Player { public int HP { get; set; } public string Name { get; set; } /* ଞͳΜ͔͍Ζ͍Ζ */ }
15. ࢮΜͰ͍Δ(HP͕0ҎԼ)ͷ ϓϨΠϠʔͷ਺Λ਺͑Α͏ʂ
16. Ͳ͏ॻ͘ʁ
17. LINQΛ࢖͏ͱίʔυ͕୹͘ͳΔʂ ਺͑Δ෦෼͸6ߦ // LINQΛ࢖Θͳ͍ͱ List<Player> playerList = GetPlayerList (); int deadPlayerCount = 0; foreach (Player player in playerList) { if(player.HP <= 0) { deadPlayerCount++; } }
18. LINQΛ࢖͏ͱίʔυ͕୹͘ͳΔʂ ͨͬͨ1ߦʹʂ୹͍ʂ // LINQΛ࢖͏ͱ List<Player> playerList = GetPlayerList (); int deadPlayerCount = playerList.Count (player => player.HP <= 0);
19. LINQΛ࢖͏ͱίʔυ͕୹͘ͳΔʂ // LINQΛ࢖Θͳ͍ͱ int deadPlayerCount = 0; foreach (Player player in playerList) { if(player.HP <= 0) { deadPlayerCount++; } } // LINQΛ࢖͏ͱ int deadPlayerCount = playerList.Count (player => player.HP <= 0);
20. ѹ౗త͡Όͳ͍͔ʂ
21. ୹͍͚ͩ͡Όͳ͍ʂ ಡΈ΍͍͢ʂ
22. ͖ͬ͞ͷ2ͭͷίʔυ ԿΛ͍ͯ͠Δͷ͔ௐ΂Δ࣌ Ͳ͏ಡΉͷ͔ʁ
23. ͜ͷίʔυɺͲ͏ಡΈ·͢ʁ // LINQΛ࢖Θͳ͍ͱ List<Player> playerList = GetPlayerList (); int deadPlayerCount = 0; foreach (Player player in playerList) { if(player.HP <= 0) { deadPlayerCount++; } }
24. intܕͷdeadPlayerCountΛ0ͰॳظԽ foreachจͰplayerListΛ·Θ͢ ΋͠ཁૉͷplayerͷHP͕0ҎԼͳΒ͹ deadPlayerCountΛΠϯΫϦϝϯτ
25. ͋ɺͭ·Γʂ HP͕0ҎԼͷϓϨΠϠʔΛ਺͑Δͷ͔ʂ
26. ͬͯͳΔ 1ճ಄ͷதͰม׵͕ඞཁ
27. ҰํLINQ͸ʁͲ͏ಡΈ·͢ʁ // LINQΛ࢖͏ͱ int deadPlayerCount = playerList.Count (player => player.HP <= 0);
28. intܕͷdeadPlayerΛ࣍ͷ஋ͰॳظԽ͠Ζʂ playerList಺ͷ࣍ͷ৚݅Λຬͨ͢ཁૉ਺ͩʂ ৚݅͸ཁૉͷHP͕0ҎԼͩʂ
29. ΄΅ҙຯతʹɺ ʮHP͕0ҎԼͷϓϨΠϠʔΛ਺͑Ζʂʯ ࠨ͔Βӈʹૉ௚ʹಡΊΔʂ
30. foreachจɺifจͷ͸ ʮͲ͏ॲཧ͍ͯ͠Δ͔ʯ͕ॻ͔Ε͍ͯΔ LINQͰॻ͔Εͨͷ͸ ʮԿ͕͍͔ͨ͠ʯ͕ॻ͔Ε͍ͯΔ
31. Ͳ͏Ͱ͔͢ʁ͜Μͳײ͡Ͱɺ ഑ྻɺϦετɺσΟΫγϣφϦͳͲΛ ѻ͏ίʔυ͕୹͘ಡΈ΍͘͢ॻ͚·͢Αʂ
32. LINQ͍͍Ͱ͠ΐʂ
33. ୈ̍෦ɺ׬
34. ࠓ೔ͷςʔϚ͸ɺʮࢲͱUnityͱLINQͱʯ Unityͷ࿩ͯ͠ͳ͍ʂ
35. ͯ͞ɺUnityίϛϡχςΟͰͷLINQ ͋Μ·Γྲྀߦͬͯͳ͍ؾ͕͠·͢ ͍΍ɺษڧձͰLINQ࢖͍ͬͯΔਓͬͯฉ͘ͱ ࢖͍ͬͯΔਓͷׂ߹͕গͳ͍ΜͰ͢
36. ཧ༝ͦͷ1 ͍ΖΜͳਓ͕UnityΛ࢖͏͔Β
37. ୈ2෦ɺॳֶऀͱLINQ
38. Unity͸͍Ζ͍Ζ֮͑Δ͜ͱ͕͋Δ ಛʹϓϩάϥϛϯάॳΊͯͱ͍͏ਓ͸ ͍Ζ͍Ζ஌Βͳ͍ͱ͍͚ͳ͍ ·͊ɺLINQޙճ͠ʹͳΔͷ΋࢓ํͳ͍ʁ
39. ͋ͱɺ LINQΛ͔ͬ͠Γཧղ͸ͦΜͳʹ؆୯͡Όͳ͍ ʮC#ͷؔ࿈ݴޠཁૉ͕ଟ͍͔Βʯ
40. • σϦήʔτ • ಗ໊ؔ਺"(ΠϯϥΠϯͳࣜ"or"εςʔτϝϯτ) • ϥϜμࣜͷॻ͖ํ • ڞ௨σϦήʔτܕ • ஗ԆධՁ
41. • ֦ுϝιου • ੩తΫϥε • δΣωϦοΫ"(ͳΫϥεɺΠλʔϑΣʔεɺϝιου)" • ܕਪ࿦ • IEnumerable<T>ͱ"IEnumerator<T> • yield • ಗ໊ܕ
42. ͍΍ɺશ෦׬શʹཧղ͠ͳͯ͘΋͍͍͚Ͳ ͱΓ͋͑ͣग़͖ͯ·͢
43. ಛʹ࣍ͷͱಉ࣌ʹษڧͯ͠ʮΘ͔ΜͶʔʯ ͯͳΔਓ͕ଟ͍ؾ͕͠·͢ • σϦήʔτ • ϥϜμࣜͷॻ͖ํ • ڞ௨σϦήʔτܕ
44. ͍ͯ͏͔ࢲͰ͢
45. ·ͣLINQͷϝϦοτ ʮ୹͘ಡΈ΍͘͢ͳΔʯ Λ఻͑Δͷ͕େࣄͩͱࢥ͍ͬͯ·͢
46. ͋·ΓC#Λৄ͘͠ͳ͍ਓʹLINQΛڭ͑Δࡍɺ • Where • Select ࠷ॳͷϝιου͕͜ΕϕετͰ͸ͳ͍ͱࢥ͍·͢ɻ
47. • ஗ԆධՁ • IEnumerable<T> Λಉ࣌ʹڭ͑ͳ͍ͱ͍͚ͳ͍͔Β
48. ٯʹC#ΊͬͪΌৄ͍͠ਓʹͳΒ WhereͱSelect͕ྑ͍ͱࢥ͍·͢ʂ
49. ڭ͑Δͷ͸ͳΔ΂͘ಉ࣌Ͱ͸ͳ͘ɺ ͻͱͭͣͭʂ
50. ͱ͜ΖͰ
51. ೔ຊAndroidͷձUnity෦ΑΓ C87ʹͯUNIBOOK2 500ԁͰൢച͠·͢ (CD$or$ό΢νϟʔνέοτ)
52. ࢲ΋UNIBOOK2ʹॻ͖·ͨ͠ ͙͢࢖͑ΔΦεεϝ!LINQ!ϝιου!4!બ
53. ͋͑ͯͳΔ΂͘C#ͷݴޠཁૉΛొ৔ͤͣ͞ɺ ࣍ͷϝιουΛ঺հ Count Any All First
54. UNIBOOK2͓ئ͍͠·͢ʂ ͍ΖΜͳςʔϚ͕΋Γͩ͘͞Μʂ ͜͏͝ظ଴ʂ ৄ͘͠͸೔ຊAndroidͷձUnity෦ͷϖʔδͰʂ
55. ୈ̎෦ɺ׬
56. LINQษڧ͍ͨ͠ͳΒ ྑ͍ຊ͸͍ͬͺ͍͋Γ·͢Αʂ ࢲ͕ʮ·ͣɺ͜͏͍͏ͷ͕͋ͬͨΒʯͱ͍͏ຊΛॻ͖·ͨ͠
57. ୈ̏෦ɺUnityͱiOSͱLINQ
58. Unity+iOSͩͱɺ͍Ζ͍Ζ͋ͬͯ ಥવΤϥʔʹͳΔ͜ͱ͕͋Γ·͢ (*AOTίϯύΠϧؔ࿈)
59. ࢒೦ͳ͕ΒLINQ΋ͳΓ·͢
60. ͭΒ͍
61. UnityͰ͋Μ·ΓLINQ͕ྲྀߦ͍ͬͯͳ͍ʁ ཧ༝ͦͷ2 iOSͩͱࢮ͵͜ͱ͕͋Δ͔Β
62. ͭΒ͍
63. ͦΕΛղܾ͍ͨ͠ʂ ͦΕ͕໨ඪͳϥΠϒϥϦΛ࡞੒ʂ ·ͩϕʔλͰ͢ʂʂʂ
64. UniLinq
65. ଓ͖͸ɺC#ΞυΧϨͰʂ
66. ࢲͱUnityͱLINQͱ @RyotaMurohoshi 2014/12/20&ϓϩάϥϛϯάੜ์ૹษڧձ&ୈ32ճ