Swift 5.1

Swift 5.1で追加された機能Part.1

ソースコードとメモ書き
https://github.com/matsuda/MaterialAndMemo/tree/master/Swift_5_1

1. 4XJGU
    
   ,PTVLF
   .BUTVEB
2. w %FGBVMU
   "SHVNFOUT
   *O
   &OVN
   $BTFT
   w 4ZOUIFTJ[F
   EFGBVMU
   WBMVFT
   GPS
   UIF
   NFNCFSXJTF
   JOJUJBMJ[FS
   w *NQMJDJU
   SFUVSOT
   GSPN
   TJOHMFFYQSFTTJPO
   GVODUJPOT
   w 8BSOJOHT
   GPS
   BNCJHVPVT
   OPOF
   DBTFT
   w .BUDIJOH
   PQUJPOBM
   FOVNT
   BHBJOTU
   OPOPQUJPOBMT
   w &YQBOEJOH
   4XJGU
   4FMG
   UP
   DMBTT
   NFNCFST
   BOE
   WBMVF
   UZQFT
   w 0QBRVF
   3FTVMU
   5ZQFT
   w 4UBUJD
   BOE
   DMBTT
   TVCTDSJQUT
   w 0SEFSFE
   $PMMFDUJPO
   %J⒏OH
   w ,FZ
   1BUI
   .FNCFS
   -PPLVQ
   w 1SPQFSUZ
   8SBQQFST
   w 
3. w %FGBVMU
   "SHVNFOUT
   *O
   &OVN
   $BTFT
   w 4ZOUIFTJ[F
   EFGBVMU
   WBMVFT
   GPS
   UIF
   NFNCFSXJTF
   JOJUJBMJ[FS
   w *NQMJDJU
   SFUVSOT
   GSPN
   TJOHMFFYQSFTTJPO
   GVODUJPOT
   w 8BSOJOHT
   GPS
   BNCJHVPVT
   OPOF
   DBTFT
   w .BUDIJOH
   PQUJPOBM
   FOVNT
   BHBJOTU
   OPOPQUJPOBMT
   w &YQBOEJOH
   4XJGU
   4FMG
   UP
   DMBTT
   NFNCFST
   BOE
   WBMVF
   UZQFT
   w 0QBRVF
   3FTVMU
   5ZQFT
   w 4UBUJD
   BOE
   DMBTT
   TVCTDSJQUT
   w 0SEFSFE
   $PMMFDUJPO
   %J⒏OH
   w ,FZ
   1BUI
   .FNCFS
   -PPLVQ
   w 1SPQFSUZ
   8SBQQFST
   w 
5. %FGBVMU
   "SHVNFOUT
   *O
   &OVN
   $BTFT w 4XJGU
   ҎલͰ͸"TTPDJBUFE
   7BMVFT͸ॳظԽ࣌ʹ஋Λ ઃఆ͢Δඞཁ͕͋Δ
   w 4XJGUΑΓσϑΥϧτ஋Λઃఆ͢Δ͜ͱ͕Ͱ͖ΔΑ͏ ʹͳͬͨ
   w ϥϕϧҾ਺Λઃఆ͠ͳ͍ͱίϯύΠϧΤϥʔʹͳΔ ʲ4XJGUʳ4XJGU͔ΒFOVNͷ"TTPDJBUFE
   7BMVFTʹσϑΥϧτ஋ΛઃఆͰ͖ΔΑ͏ʹͳͬͨ
   IUUQTRJJUBDPNTIJ[JUFNTGDE⒎GFGCCB VUN@DBNQBJHOQPQVMBS@JUFNTVUN@NFEJVNGFFEVUN@TPVSDFQPQVMBS@JUFNT
7. 4ZOUIFTJ[F
   EFGBVMU
   WBMVFT
   GPS
   UIF
   NFNCFSXJTF
   JOJUJBMJ[FS w 4XJGUͷߏ଄ମʢ4USVDUʣ͸ϓϩύςΟʹϚον͢Δύϥ ϝʔλΛड͚ೖΕΔΠχγϟϥΠβʔΛࣗಈͰੜ੒ͯ͘͠ ΕΔʢϝϯόϫΠζΠχγϟϥΠβʔʣ
   w 4XJGU
   ҎલͰ͸σϑΥϧτ஋ͷ༗ແʹؔΘΒͣશͯͷ ύϥϝʔλΛड͚ೖΕΔඞཁ͕͋Δ
   w 4XJGU
   Ͱ͸σϑΥϧτύϥϝʔλΛ࢖༻͢ΔΑ͏ʹ ͳͬͨ
9. *NQMJDJU
   SFUVSOT
   GSPN
   TJOHMF FYQSFTTJPO
   GVODUJPOT w ؔ਺͕୯Ұࣜ·ͨ͸୯Ұͷ஋͔Β൑அ͞ΕΔߏจͰ͋Ε ͹ɺSFUVSOΛ࡟আ͢Δ͜ͱ͕Ͱ͖Δ
   w ͳ͓ɺैདྷ͔Β஋Λฦ͢୯ҰߦͷΫϩʔδϟʔͰ͸ SFUVSOΛলུͰ͖Δ
11. 8BSOJOHT
    GPS
    BNCJHVPVT
    OPOF
    DBTFT w 4XJGUͷPQUJPOBM͸ATPNFAͱAOPOFAͱ͍͏ͭͷঢ়ଶ͕ ͋Δ
    w AOPOFAͱ͍͏ঢ়ଶΛ࣋ͭಠࣗͷFOVNΛ࡞੒͠ɺͦΕΛ PQUJPOBMͰϥοϓ͢ΔͱࠞཚΛট͘͜ͱʹͳΔ
    w 4XJGU
    Ͱ͸XBSOJOH͕දࣔ͞ΕΔ
13. .BUDIJOH
    PQUJPOBM
    FOVNT
    BHBJOTU
    OPOPQUJPOBMT w 4USJOHͱ*OUFHFSʹ͓͚ΔPQUJPOBMͱඇPQUJPOBMͷ TXJUDIDBTFʹΑΔύλʔϯϚονϯά͸ద੾ʹॲཧ͞Ε Δ͕FOVNʹ֦ு͞Ε͍ͯͳ͍
    w 4XJGU
    Ͱ͸FOVNͷPQUJPOBMͱඇPQUJPOBMͰTXJUDI DBTFʹΑΔύλʔϯϚονϯάΛ࢖༻͢Δ͜ͱ͕Ͱ͖Δ
15. &YQBOEJOH
    4XJGU
    4FMG
    UP
    DMBTT
    NFNCFST
    BOE
    WBMVF
    UZQFT w A4FMGAΩʔϫʔυ͸࣮ࡍͷ۩ମతͳܕ͕ෆ໌ͳίϯςΩε τͰಈతʹࢀরͰ͖Δ
    w 4XJGU
    Ͱ͸A4FMGAͷείʔϓ͕FOVNɺTUSVDUɺDMBTT ͳͲͷ۩৅ܕ΋ؚΉΑ͏ʹ֦ு͞Εͨ
17. ࣍ճ w 0QBRVF
    3FTVMU
    5ZQFT
    w 4UBUJD
    BOE
    DMBTT
    TVCTDSJQUT
    w 0SEFSFE
    $PMMFDUJPO
    %J⒏OH
    w ,FZ
    1BUI
    .FNCFS
    -PPLVQ
    w 1SPQFSUZ
    8SBQQFST
    w