generic_constraint.ts

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utility_types.ts

api_service.ts

type_guard.ts

generic_constraint.ts

union_types.ts

mapped_type.ts

decorator.ts

template_literal.ts

conditional_type.ts

assertion.ts

エキスパート5

マスター5

generic_constraint.ts

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type KeyOf<T> = keyof T;↵

function getValue<T, K extends keyof T>(obj: T, key: K): T[K] {↵

return obj[key];↵

}

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関連する練習問題

utility_types.ts api_service.ts type_guard.ts union_types.ts mapped_type.ts decorator.ts