Go - CLI Tools Design

Transcript

1. CLI Tools Design
   Shintaro Kaneko - @kaneshin / גࣜձࣾΤ΢ϨΧ
   !1
   

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2. !2
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   ໾৬ औక໾$50
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   ೥ɿ૊ࠐܥاۀ΁ೖࣾ
   ೥ɿגࣜձࣾΤ΢ϨΧ΁ೖࣾ
   ೥ɿಉࣾࣥߦ໾һ$50ब೚
   ೥ɿಉࣾऔక໾$50ब೚
   ಛٕ ৬छɿΤϯδχΞϦϯά
   ɺϚωδϝϯτɺ඼࣭อূ
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   ਺ֶɿ࠷దԽཧ࿦ɺઢܗʗඇઢܗܭը๏
   

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3. !3
   (PݴޠΒ͘͠(PίʔυΛ
   ࣮૷͢ΔͨΊͷख๏ͱࢥ૝
   IUUQTLBOFTIJOCPPUIQN
   

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4. !4
   (PݴޠΒ͘͠(PίʔυΛ
   ࣮૷͢ΔͨΊͷख๏ͱࢥ૝
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   ຊ೔࿩͢͜ͱ͸͜ͷຊʹେମॻ͍ͯ͋Γ·͢
   

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5. Do you have experience of creating

   Command Line Tools?
   !5
   

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6. We absolutely need to know

   The CLI Design
   for publishing a great library
   !6
   

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7. Premature optimization is
   the root of all evil.
   We should forget about small efficiencies, say about 97% of the time:
   premature optimization is the root of all evil.
   Yet we should not pass up our opportunities in that critical 3%.
   - Donald Knuth
   

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8. UNIX Philosophy - Doug McIlroy
   This is the Unix philosophy:
   1. Write programs that do one thing and do it well.
   2. Write programs to work together.
   3. Write programs to handle text streams, because that is a universal
   interface.
   !8
   

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9. UNIX Philosophy - Mike Gancarz
   1. Small is beautiful.
   2. Make each program do one thing well.
   3. Build a prototype as soon as possible.
   4. Choose portability over efficiency.
   5. Store data in flat text files.
   6. Use software leverage to your advantage.
   7. Use shell scripts to increase leverage and portability.
   8. Avoid captive user interfaces.
   9. Make every program a filter.
   !9
   

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10. Go is based on the philosophy
    !10
    

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11. Command Line Interface
    !11
    $ exe [GLOBAL OPTIONS]... \
    [] [COMMAND OPTIONS]... [...]
    $ git --git-dir=/path/to/repo/.git \
    log --oneline -p origin/master
    • https://github.com/eure/kamimai
    

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