iosdcrc_operator

Swiftは何故か郵便屋さんを採用している話です #iOSDCRC

Transcript

1. iOSDC 2017 Reject Conference day1
   ༣ศ԰͞Μͷԋࢉࢠ
   @S_Shimotori
   

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2. ͩΕ
   • @S_Shimotori / @S_Shimotori_pub
   • ͭΒֶ͍ੜ
   • iOSDCؔ܎3౓໨
   

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3. Custom Operators
   

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4. ԋࢉࢠΛࣗ࡞ʂͨͷ͍͠ʂ
   • xmartlabs/Eureka
   • ϑΥʔϜϏϧμʔ
   • +++ͰSectionΛ௥Ճ͢ΔͳͲ
   • thoughtbot/Runes
   • HaskellͰݟͨΑ͏ͳԋࢉࢠ͕࢖͑ΔΑ͏ʹͳΔ
   

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5. ͲΜͳԋࢉࢠ͕࡞ΕΔͷ͔ʁ
   

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6. ͜ΕΛݟ͓͚ͯ͹׬ᘳͰ͢ʂ
   

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7. ͳΜͱͳʙ͘๏ଇ͕͋Δʂ
   

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8. ๏ଇͦͷ1
   

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9. ͦͷ1: ࢖͑ͦ͏ͳASCIIจࣈ͸࢖͑Δ
   • ݟͨ͜ͱ͋Δ΋ͷͰ΄΅શͯ
   • ڍ͛ΒΕ͍ͯͳ͍จࣈΛݟΕ͹ೲಘ͔΋ʁ
   • ɹɹɹɹɹɹɹɹɹ΍ɹɹɹɹɹɹɹɹɹɹ΋ෆՄ
   • ɹ ͸dot operatorͰ࢖༻Մ
   l 4USJOH-JUFSBMͰ࢖༻
   b
   LFZXPSEͷઌ಄Ͱ࢖༻ JGͳͲ
   
   JNQMJDJUOBNFEQBSBNFUFSTͰ࢖༻ ͳͲ
   
   
   \^ UVQMFɼGVODUJPOͳͲͰ࢖༻
   <> BSSBZMJUFSBMͳͲͰ࢖༻
   ܕͷݺͼग़͠ɼ࿈ଓ͢ΔPQFSBUPSͷ෼ׂͳͲͰ࢖༻
   ۠੾Γͱͯ͠࢖༻
   ! BUUSJCVUFͰ࢖༻ !BWBJMBCMFͳͲ
   
   a Τεέʔϓ΍,FZ1BUI&YQSFTTJPOͰ࢖༻
   @ XJMEDBSEQBUUFSOͰ࢖༻
   A ༧໿ޠΛJEFOUJpFSʹ༻͍Δ࣌ʹ࢖༻
   

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10. ๏ଇͦͷ2
    

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11. ͦͷ2: identifierͰ࢖͑Δจࣈ͸جຊతʹ࢖͑ͳ͍
    • identifierͱoperator͸ผ෺
    • ઐ༻ͷΤϥʔ͕ଘࡏ͢Δ
    •
    • ΋ͪΖΜΞϧϑΝϕοτ΍਺ࣈ͸࢖༻ෆՄ
    • ΋࢖༻ෆՄ
    ·Ί͖ͪ͠: ͜ͷΤϥʔจ۟͸ʮidentifier_when_expecting_operatorʯͷ໊Ͱ͔ͬ͠ΓSwiftʹ࣮૷͞Ε͍ͯ·͢
    https://github.com/apple/swift/blob/bf42def404abcc9239cf7856475da2c80b86cc70/include/swift/AST/DiagnosticsParse.def#L421
    

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12. ❌
    U+3008-U+3020, U+3030
    ൣғμϒͬͯΔ͡ΌΜʁ
    U+3021-U+302Fɹ͕
    ·Ί͖ͪ͠: U+3021-U+3029͸ોभ߸ᛰͱ͍͏਺ࣈɼU+302A-U+302F͸੠఺ͱ͔੠ූͱ͔ݺ͹ΕΔ΋ͷɽཁ͸தࠃޠɽ
    ͱ͍͏͔U+3000-U+303Fࣗମ͕CJK Symbols and Punctuationͱ͍͏ΧςΰϦɽ
    

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13. ๏ଇͦͷ3
    

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14. ͦͷ3: ਺ֶه߸͕݁ߏ࢖͑Δ
    • ໼ҹͱ͔਺ֶه߸ͱ͔͕·Δͬͱ࢖͑Δ
    • mattt/Eulerͱ͍͏ϥΠϒϥϦ(?)͕͋Δ͘Β͍
    • ɹɹɹɹ͸࢖͑ͳ͍
    ΄͔ଟ਺
    ਖ਼֬ʹ͍͏ͱɼUnicodeͰʮArrowsʯʮMathematical OperatorsʯʮMiscellaneous TechnicalʯϒϩοΫͱݺ͹Ε͍ͯΔͱ͜Ζ͕
    ·Δ·Δ࢖༻Մೳʹͳ͍ͬͯΔ
    

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15. ๏ଇͦͷ4
    

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16. ͦͷ4 : ҙ֎ͱׅހ΍ϓϥΠϜ͕࢖͑ͪΌ͏
    • ASCIIจࣈͰμϝͰ΋ɼࣅͨจࣈ͕࢖͑Δ͜ͱ͕͋Δ
    •
    •
    •
    • ٯʹ͍͏ͱׅހ΍ΫΥʔτͷྨ͸ม਺໊ʹ࢖͑ͳ͍
    

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17. ๏ଇͦͷ5
    

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18. ͦͷ5: ԋࢉࢠʹ࢖͑Δֆจࣈ΋͋Δ
    • ࢖͑Δͷ͸U+3030·ͰͷจࣈͷҰ෦ͱࢥͬͯOK
    •
    ͸U+1F436ɼ͸U+1F42E
    • ֆจࣈͷଟ͘͸U+1F000Ҏ߱Ͱൣғ֎
    • U+3030Ҏલʹ͋Δֆจࣈ͸࢖͑Δ͔΋ʂ
    

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19. U+3030·ͰͷͲΕ͕ֆจࣈͳͷ͔
    • The Unicode Consortium͕ܾΊ͍ͯΔ
    • ΄ͱΜͲ͕࢖͑ΔͷͰɼҰཡΛݟͯωλΛ࿅Δͱྑ͠
    • ࢖͑ͳ͍ࢠ:
    • U+FE0FͱU+FE0E͕ԋࢉࢠ໊ͷ2จࣈ໨Ҏ߱Ͱ࢖͑Δ
    • ͭ·ΓֆจࣈελΠϧͱςΩετελΠϧ͸ผ෺ѻ͍
    Ұཡ
    http://unicode.org/Public/emoji/5.0/emoji-data.txt
    https://ja.wikipedia.org/wiki/Unicode%E3%81%AEEmoji%E3%81%AE%E4%B8%80%E8%A6%A7
    

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20. ͍͍ͩͨ͜Μͳײ͡ʂ
    

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21. ·ͱΊ
    • ࢖͑ͦ͏ͳASCIIจࣈ͸࢖͑Δ
    • identifierͰ࢖͑Δจࣈ͸جຊతʹ࢖͑ͳ͍
    • ਺ֶه߸͕݁ߏ࢖͑Δ
    • ҙ֎ͱׅހ΍ϓϥΠϜ͕࢖͑Δ
    • ಉ͡छྨͷจࣈ͕શ෦࢖͑ΔΘ͚Ͱ͸ͳ͍
    • ԋࢉࢠʹ࢖͑Δֆจࣈ΋͋Δ
    

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22. ࠷ޙʹ΋͏1ͭ
    

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23. ࣍ͷจࣈ͸ԋࢉࢠʹ࢖͑Δͷ͔ʁ
    ֆจࣈ͔Ͳ͏͔ ԋࢉࢠʹ࢖͑Δ͔
    ὺ
    ˟
    
    ˜
    š
    ℗
    ™
    ℠
    ֆจࣈ͔Ͳ͏͔ ԋࢉࢠʹ࢖͑Δ͔
    ὺ O :
    ˟ O :
    ⁴ O O
    ˜ : :
    š : :
    ℗ O O
    ä : O
    ℠ O O
    

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24. Θ͔ΒΜʂʂʂ
    

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