Spreading world by encouragement of cgo

Oct 17, 2017 @fukuoka.go#9 でお話しした資料です

Transcript

1. 5PNPIJTB
   0EB
   
   (.0
   1FQBCP
   *OD
   0DU
   
    ͻΖ͕Δ(P
   $(0ͷ͢͢Ί GVLVPLBHP
   
2. GVLVPLBHP
    (.0ϖύϘ
   ϓϦϯγύϧΤϯδχΞ খా஌ԝ
   
   !MJOZPXT ٕज़෦
   ٕज़ج൫νʔϜ IUUQUPNPIJTBPEBDPN
3. GVLVPLBHP
    ࠷ۙ΍͍ͬͯΔ͜ͱ ▸ /VYUKTͱ&YQSFTTͰ443
   αʔϏε
   ▸ 5ZQF4DSJQUͰOPEF
   NPEVMF
   ὎
   OQN
   JOTUBMM
   HNPQH
   ▸ /44
   NPEVMF
   ΞϓϦ
   0$501"44
4. GVLVPLBHP
    MJOVYϢʔβͷ໊લղܾΛHJUIVCͷνʔϜ΍ίϥϘϨʔλͰߦ͏
5. GVLVPLBHP
    82 1MFBTF
   VTF
   BOE
   HJWF
   TUBS IUUQTHJUIVCDPNMJOZPXTPDUPQBTT
6. GVLVPLBHP
    લճͷ͓͞Β͍ʢGVLVPLBHP ▸ (P
   WͰ
   QMVHJO
   QBDLBHF͕௥Ճ͞Εͨ
   ▸ CVJMENPEFQMVHJO
   ʹΑͬͯTP
   ϑΝΠϧΛ࡞੒
   ▸ ຊମ͔Β%ZOBNJDBMMZ
   -PBEFE
   ▸ ͜Ε·ͰͷPWFS
   31$ͷ6/*9
   EPNBJO
   TPDLFUͰ΍ΔΑΓγϯϓ ϧͰखܰ
7. $(0
   ࢖ͬͯ·͔͢ʁ GVLVPLBHP
   
8. GVLVPLBHP
    $(0ͬͯ͜͏͍͏ͷ ▸ (P
   W
   Ҏલ͔Β͋Δ
   ▸ $ͷίʔυΛΠϯϙʔτͨ͠Γ
   (PͷίʔυΛ$ʹΤΫεϙʔτͰ͖Δ
   ▸ CVJMENPEFDTIBSFE
   Ͱ
   CVJME͢Δͱ
   I
   ͱ
   TP
   Λग़ྗ
   ▸ ֤ݴޠͷ''*ϥΠϒϥϦ͔Β(Pͷίʔυ͕࢖͑Δ
9. GVLVPLBHP
    package main /* #cgo pkg-config: onigmo #include <stdlib.h> #include <string.h> #include <onigmo.h> */ import "C" import "fmt" fun main() { fmt.Println(Version()) // Output: 6.1.3 } func Version() string { return C.GoString(C.onig_version()) } package main // typedef int (*intFunc) (); // // int bridge_int_func(intFunc f) { // return f(); // } // // int fortytwo() { // return 42; // } import "C" import "fmt" func main() { f := C.intFunc(C.fortytwo) fmt.Println(int(C.bridge_int_func(f))) // Output: 42 }
10. GVLVPLBHP
     Կ͕خ͍͔͠ ▸ ߴ͍ύϑΥʔϚϯεΛཁ͢Δ෦෼ΛҠৡͰ͖Δ
    ▸ ׬੒౓ͷߴ͍
    NJEEMFXBSF
    Λ૊ΈࠐΊΔ
    ▸ $ͷख़࿅౓͕௿ͯ͘΋ൺֱత҆શͳΞϓϦέʔγϣϯ͕࡞ΕΔ
    ▸ ྫ͑͹
    PQFOTTM
    GGNQFH
    QIQ
    NSVCZ
11. GVLVPLBHP
     ؾΛ͚ͭΔͱ͜Ζ ▸ (PϙΠϯλ΍ϝϞϦͷڞ༗ʹϧʔϧ͕͋Δ
    ▸ ϙΠϯλͷϧʔϧҧ൓ΛಈతʹνΣοΫ͍ͯͯ͠Ϋϥογϡ͢Δ
    ▸ (0%&#6(DHPDIFDL
    $VJOUQUS
    ▸ ΋ͪΖΜ
    $ଆ͸($͞Εͳ͍͠$GSFF͠ͳ͍ͱϝϞϦϦʔΫ͢Δ
    ▸ εϨουηʔϑͰͳ͍΋ͷ͸͔ͬ͠ΓTZODNVUFY͢Δ
    ▸ $(0ʹॻ͍ͨ$͸ผϑΝΠϧ͔Βࢀরग़དྷͳ͍
12. $ͷϥούʔΛ࡞Δͱ٢ GVLVPLBHP
    
13. ҆શΛࣺͯڈΕ͹
    $ଆͰͳΜͰ΋ग़དྷΔ
     GVLVPLBHP
    
14. GVLVPLBHP
     ͦ͏͍͑͹ʜ
    7VF
    ͕ϦϦʔε ▸ NBUUOHPW
    TPOZWFWBM
    MB[ZUJHFSHPWʜ
    ▸ WVFTFSWFSSFOEFSFS͕
    "MU
    +BWB4DSJQU
    3VOUJNFΛαϙʔτ
    ▸ (Pͷ8FCαʔόͰ΋WόΠϯσ ΟϯάΛ࢖͑͹WVFͰ443 Ͱ͖ͦ͏ͩ &$."4DSJQUͷQVSF
    HP࣮૷΋͋Γ·͕͢
15. GVLVPLBHP
     ·ͱΊ ▸ ָͯ͠ʁʁ৴པੑߴ͍طଘࢿ࢈ιϑτ΢ΣΞ͕࢖͑Δ
    ▸ $ͷεΩϧ͕ෆཁͰ͸ͳ͍ͷͰຊԻΛݴ͏ͱ(PͰ׬͍݁ͤͨ͞
    ▸ ͱ͸͍͑ɺࣗ༝౓ͷେ͖͍બ୒͕Ͱ͖Δͱ͍͏ͷ͸ϝϦοτ
16. ͋Γ͕ͱ͏͍͟͝·ͨ͠ʂ GVLVPLBHP