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Attimet (YC F24) – Quant Trading Research Lab – Is Hiring Founding Researcher (ycombinator.com)

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Metriport (YC S22) is hiring engineers to improve healthcare data exchange (ycombinator.com)

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Converge (YC S23) well-capitalized New York startup seeks product developers (runconverge.com)

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Want Discriminated Unions in Kotlin? Use a Sealed Class

2 ingve 1 7/23/2025, 12:33:17 PM spin.atomicobject.com ↗

Comments (1)

FrankWilhoit · 1d ago

Discriminated unions are a terrible way to enforce type safety. They are a backport of a physical-data-modelling antipattern. Inheritance or GTFO.