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voltonez's profile
Bram Verburg
Bram Verburg
Bram Verburg
@voltonez

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Bram Verburg

@voltonez

blog.voltone.net
Joined November 2009

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    1. Martin Gausby‏ @gausby 29 May 2019
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      • Report NetzDG Violation

      Boolean blindness is real. When you have a function like `is_valid?` you would most likely rather have a fun that return :valid | {:invalid, reasons}, where reasons is a list explaining why the data is not valid. Sometimes a bool is the right return but not often. #myelixirstatus

      6 replies 11 retweets 45 likes
    2. Bram Verburg‏ @voltonez 29 May 2019
      • Report Tweet
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      Replying to @gausby

      Except that this inevitably leads to people writing ‘if is_valid?(token) do ...’ and then wondering how the bad guys keep getting in

      3 replies 0 retweets 2 likes
    3. Max Gorin‏ @mxgrn 30 May 2019
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      Replying to @voltonez @gausby

      Obviously, question-mark functions are only for boolean results.

      1 reply 0 retweets 0 likes
    4. Martin Gausby‏ @gausby 30 May 2019
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      Replying to @mxgrn @voltonez

      Without doubt. And my original tweet does not claim or argue otherwise.

      1 reply 0 retweets 0 likes
    5. Bram Verburg‏ @voltonez 30 May 2019
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      Replying to @gausby @mxgrn

      Right, my reply was more about the dangers of boolean coercion, which might bite people regardless of function name. Use ‘case’ even for boolean returns and let it crash if you made incorrect assumptions

      1 reply 0 retweets 0 likes
      Bram Verburg‏ @voltonez 30 May 2019
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      Replying to @voltonez @gausby @mxgrn

      IF considered harmful

      6:22 AM - 30 May 2019
      • 1 Like
      • Arjan Scherpenisse
      0 replies 0 retweets 1 like

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