What this snippet does
Interfaces can accept type parameters, allowing flexible data structures like boxes, wrappers, or collections.
Expected output
toy
Why practise typing this
Typing generics code builds muscle memory for the symbols and indentation TypeScript uses most, which prose-based typing tests never cover. DevType measures your words per minute and accuracy on this snippet and tracks the individual characters you mistype, so later lessons can target them.
More TypeScript practice
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- Assuming generic types have specific methodsGenerics · intermediate
- Defining a generic pagination responseGenerics · intermediate
- Using an interface without providing type argumentsGenerics · intermediate
- Constraining a generic to have a length propertyGenerics · intermediate