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Sandi Metz

Programmer and teacher; wrote Practical Object-Oriented Design in Ruby and 99 Bottles of OOP.

Sandi Metz did not write this page. ppll compiled it from their own words, each linked to the source. Is this you? · Report a mistake

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What they believe

The bold line is korrents’ wording; the quote is theirs. These one: what they wrote before what they said aloud, one per source, newest first.

All 4 beliefs, on korrents

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Everything, newest first — across every channel.

Sources

21 February 2018

Sandi MetzRecommends

  • Recommendsrcmnd.app

    lever door handles

    Their words

    I have levers in my house and can highly recommend them. They are way more convenient than round knobs.

    sandimetz.com

20 January 2016

Sandi MetzKorrents

From one piece The Wrong Abstraction 4 beliefs · sandimetz.com

+ 1 more

The whole feed →

Beliefs

  • Korrents What they believe 4 beliefs — each backed by an exact quote.

    Each is a — compiled by korrents.com, not by them: the one-line wordings are korrents', the quotes are theirs.

    Recent

    • Duplication is cheaper than the wrong abstraction, so code should not be made reusable before there are real examples of what the reuse has to do.
      duplication is far cheaper than the wrong abstraction

      The Wrong Abstraction Said 20 Jan 2016

      Full record — everyone who holds this →

    • Existing code exerts a powerful influence: its presence argues that it is correct and necessary, and sunk cost keeps teams inside an abstraction that has stopped fitting.
      Existing code exerts a powerful influence. Its very presence argues that it is both correct and necessary.

      The Wrong Abstraction Said 20 Jan 2016

      Full record — everyone who holds this →

    • When an abstraction turns out to be wrong, the fastest way forward is to inline it back into every caller and let the duplication show what the right one is.
      Once an abstraction is proved wrong the best strategy is to re-introduce duplication and let it show you what's right.

      The Wrong Abstraction Said 20 Jan 2016

      Full record — everyone who holds this →

    Show 1 more
    • Parameters and conditional branches accumulating inside shared code are the diagnostic that the abstraction is wrong.
      If you find yourself passing parameters and adding conditional paths through shared code, the abstraction is incorrect.

      The Wrong Abstraction Said 20 Jan 2016

      Full record — everyone who holds this →

    Beliefs others hold too

    All 4 beliefs →

What is a korrent?

A korrent is a belief a person has stated in their own words: one sentence stating the claim, backed by a quote and a source, kept at korrents.com.

Under a name here, the quoted block is what they actually said. The korrent beneath it is the claim those words support, in korrents' wording — tap it to see the record, its source, and who else holds it.

Nobody here wrote their own korrents. They are compiled from public statements, and a person can change their mind, which is recorded too.

Recommends rcmnd

Where they publish

About the English under a post

Some people here publish in a language other than English. Where they do, this site shows a machine translation beneath the post, in this typeface — the site's own, not theirs.

The post itself is never changed, moved or hidden: what is set in the serif above is exactly what the person published, and it is what to quote them on. A translation can be wrong in ways that matter, especially about tone.

Only the post's own words are translated. A quoted post, a linked article and a belief on korrents.com are left in their original language.