What is the ?[]? syntax in C#?

Step by step explanation: params Delegate?[] delegates – It is an array of nullable Delegate params Delegate?[]? delegates – The entire array can be nullable Since each parameter is of the type Delegate? and you return an index of the Delegate?[]? array, then it makes sense that the return type is Delegate? otherwise the compiler …

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Is there a “null coalescing” operator in JavaScript?

Update JavaScript now supports the nullish coalescing operator (??). It returns its right-hand-side operand when its left-hand-side operand is null or undefined, and otherwise returns its left-hand-side operand. Old Answer Please check compatibility before using it. The JavaScript equivalent of the C# null coalescing operator (??) is using a logical OR (||): var whatIWant = …

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