Minor Writing Go Learn from Standard package

[初心者向け]Go言語の勉強のひとつに標準パッケージのコードリーディングがる。暇な時に見つけた「こんな書き方できるの？」を紹介します。

Transcript

1. .JOPS8SJUJOH(P
   -FBSOGSPN4UBOEBSEQBDLBHF
   

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2. !QPSJO
   'SPOUFOE%FWFMPQNFOU#BDLFOE%FWFMPQNFOU
   (PMBOH1ZUIPO+BWB4DSJQU
   QBHF
   (P6ODP-5 .JOPS8SJUJOH(P
   

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3. QBHF
   *OUSPEVDUJPO
   \
   

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4. *OUSPEVDUJPO
   QBHF
   -FBSOGSPN4UBOEBSE1,(
   
   (Pݴޠͷษڧͷͻͱͭʹඪ४ύο
   έʔδͷίʔυϦʔσΟϯά͕ΔɻՋ
   ͳ࣌ʹݟ͚ͭͨʮ͜Μͳॻ͖ํͰ͖
   ΔͷʁʯΛ঺հ͠·͢ɻ
   (P6ODP-5 .JOPS8SJUJOH(P
   

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5. QBHF
   -PPQQSPDFTTJOH
   'SPNCVpPTDBOHP
   \
   

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6. GPS
   TDBOHP ͷ ߦ໨ʹݟ׳Εͳ͍
   GPS ͷ࢖͍ํ͕͋ΔɻϓϥΠϕʔτ
   ͳఆ਺Ͱແݶϧʔϓ͍ͨ͠ͱ͖ͱ͔
   ͸ྑ͍͔΋͠Εͳ͍
   QBHF
   

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7. QBHF
   *NQPSU
   'SPNCZUFTDPNQBSF@UFTUHP
   \
   

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8. GPS
   ඪ४ύοέʔδͷςετͰΑ͘Έ͔
   ͚ΔɻυοτΛ͚ͭͯΠϯϙʔτ͢
   Δͱʮ1SJOUMO IFMMPXPSMEz
   ʯͳͲ
   ͷΑ͏ʹύοέʔδ໊Λলུͯ͠ॻ
   ͚Δɻ ։ൃͷࡍ͸ඇਪ঑Β͍͠
   
   QBHF
   

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9. QBHF
   BSSBZUPTMJDF
   'PSNGNU@UFTUHP
   \
   

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10. BSSBZUPTMJDF
    ֤ύοέʔδͰΈ͔ͭΔ<>ͱ͍
    ͏දهɻ͜Ε͸BSSBZܕΛͦͷ
    ··TMJDFܕʹม׵͢ΔɻTMJDF
    ͔͠ڐ͞ͳ͍ؔ਺ͷҾ਺ʹBSSBZ
    Λ౉͍ͨ࣌͠ʹ࢖͍ͬͯΔ
    QBHF
    

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11. QBHF
    TIPSUIBOE
    'PSNCVJMECVJMEHP
    \
    

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12. TIPSUIBOE
    ϝιουΛؔ਺ͱͯ͠ϥοϓ͢
    Δ͜ͱͰɺผύοέʔδͰ୹͍
    هࡌ͕ՄೳʹͳΔɻJOJUؔ਺ͱ
    ૬ੑ͕ྑ͍ؾ͕͢Δɻ
    QBHF
    

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13. $PODMVTJPO
    QBHF
    ΈΜͳͰඪ४ύοέʔδΛಡ΋͏
    ࣗ෼͸BMJBTHPTbVTSMPDBMHP`ઃఆͯ͠·͢ɻ
    (P6ODP-5 .JOPS8SJUJOH(P
    

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