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Briefle words · Code & architecture

KISS

Also called Keep it simple

Preferring the simplest code that does the job, because simple code is easier to read, test and change.

Say it to an AI

TypeScript function sendWelcomeEmail(hire: Employee) that calls mailer.send with the "welcome" template, first name and start date. Email is the only channel, so apply YAGNI and KISS: a plain function, no notifier interface, factory or generics.

How an expert would brief the stronger version of “Welcome email”.

See it

Try it as a puzzle →

An HR platform emails every new hire when they're added. Email is the only channel, with nothing else planned.

Study A · the weaker one
Study B · the stronger one

Why: B's 'sendWelcomeEmail(hire)' shows the recipient, the template and the data right where they're used.

Related words

  • Single responsibility principle
  • Flag argument
  • Side effect
  • Parameter object
  • Long parameter list
  • Named arguments
  • Options object
  • Utils file

Room 3 · Functions & structure

Learn “KISS” in a five-minute lesson

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