Discriminated union

Discriminated union is a fancy way of saying an enum or a type that can only be one of a fixed set of values. It's like the ultimate commitment-phobe of data types - it wants to keep its options open, but only within a strict set of predefined choices.

How to use it in a sentence

  • "I tried to store a string in a discriminated union that only accepts integers, but it looked at me like I was trying to pay with Bitcoin at a lemonade stand."

  • "When the new hire asked why we were using a discriminated union instead of a simple enum, the lead engineer just sighed and muttered something about 'type safety' and 'functional programming hipsters'."

If you actually want to learn more...

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Note: the Developer Dictionary is in Beta. Please direct feedback to skye@statsig.com.

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