Types in Motion
Generics & constraints
Lesson 2 of 3
Write one function that stays type-safe across many types — and constrain it when you need a guarantee.
What you'll learn
- Write a generic function that preserves its input type
- Add a constraint with extends to require certain shape
- See why generics beat any for reusable code
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Not sure yet? Try the free lesson first: Narrowing & discriminated unions