Sep 10, 2025 路 10 min read 路 Introduction Null reference exceptions are the norm, they are not exceptional. For many developers, handling nothing (null) has become a mundane routine built into the mind's muscle memory. A few "if" statements there, a guard condition here, and yet...
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Sep 10, 2025 路 7 min read 路 TL;DR C# developers have better options than relying on null. Use value types for guaranteed validity, Option<T> in libraries like LanguageExt for explicit absence, required/init for complete object construction, and Nullable Reference Types for safe...
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Apr 12, 2025 路 4 min read 路 TypeScript developers love discriminated unions (or tagged unions). They provide a fantastic way to model states, events, or different kinds of data structures in a type-safe manner. When working with external data sources like JSON APIs, however, de...
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Feb 8, 2024 路 3 min read 路 This week, we'll look at some interesting details about Discriminated Union types. Tuple vs. Multiple Fields There is a subtle difference between these two cases of Discriminated Union (DU): type DU = | A of int * string | B of (int * string...
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Jan 11, 2024 路 2 min read 路 Single-case discriminated unions are a great way to avoid primitive obsession. 馃挕 Primitive obsession is an anti-pattern where primitive types are used too much in places where a custom type would be a better fit. By using custom types or wrapper ty...
KAndr茅s commented
Sep 15, 2023 路 3 min read 路 If you鈥檝e used Typescript in any real capacity, you鈥檝e probably run into unions. Either defined in third-party libraries or your own definitions. You can define a union with almost any combination or number of types. They鈥檙e pretty simple and general...
JJannik commented
Aug 22, 2023 路 5 min read 路 This is a handy Typescript trick! In simple terms, I like to describe this feature as conditional types. This feature allows you to do things like the below ApiResponse type, let the code talk for himself // You can assert the property will have a sp...
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