Why Generics Beat dynamic

You often want one piece of code to work with many types. Writing a separate version for each type is tedious, so Dart gives you generics. 🎯

One quick fix is to type everything as dynamic, which accepts any value. It feels flexible, but it quietly throws away all of Dart's type checking.

With dynamic, the compiler can no longer catch mistakes. A typo or wrong call slips through and only blows up at run time, when users see it.

A generic lets one definition adapt to a type you choose, while still remembering exactly what that type is. You get reuse without losing safety.

You write the chosen type inside angle brackets, like List of int. Dart then enforces that type for every element you add.

Because the type is known, the compiler rejects bad values before you ever run the program. Bugs surface in your editor, not in production.

Knowing the real type also powers smart autocomplete. Your editor can suggest only the methods that actually exist on that type.

With dynamic you often cast values back before using them, which is noisy and risky. Generics return the right type automatically, so casts disappear.

A type like Map of String to int instantly tells a reader what the data holds. Generics document intent right in the type itself.

Generics are mostly a compile-time feature, so you gain checking and clarity without slowing your program down at run time.

Reach for dynamic only when a type truly is unknown, like raw JSON. Everywhere else, a generic is the safer, clearer default.

Why are generics usually preferred over dynamic?

You saw that generics give reuse without giving up type safety, unlike dynamic. They catch errors early, sharpen autocomplete, and document your code. ✅