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TypeScript Quiz Practice
Active Recall Drill Session
← Exit Session
Question 1 of 1
medium
TypeScript
What does marking a generic type parameter `out T` declare?
A
That T must be a string
B
That T is only ever used in output/covariant positions (like return types), which TypeScript can use for clearer checking and error messages
C
That T cannot be used at all
D
That the type parameter is deprecated
Check Answer