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/ 6 Years ago, sun, february 25, 2018, 12:00:00
As explained here, the ? operator can be used to mark a function parameter as optional. What does the ? operator mean on interface parameters? For example, if we have this TypeScript interface:
export interface Person {
phone?: number;
name?: string;
}
And a class that implements the interface:
class Customer implements Person {
}
Did Customer now implement Person correctly because all the properties on the Person interface are optional?
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