Скачать или смотреть NULL Coalescing Operator C# (??) & NULL Coalescing Assignment Operator C# (??=)

The null coalescing operator C#, denoted as ??, functions by yielding the value of the left-hand operand if it's found to be non-null. In cases where the left-hand operand does indeed hold a null value, the operator proceeds to execute the right-hand operand, subsequently delivering the outcome of this evaluation. Remarkably, the right-hand operand is bypassed entirely if the left-hand operand proves to be non-null. This operator is invaluable for the streamlined handling of null values, offering a concise and efficient control flow within your code.
The null coalescing assignment operator on the other hand is represented by
??= symbol. It puts a value on the left side only if that spot is empty (null). No need to worry – if there's something already there, the operator won't touch it. Plus, it doesn't even bother checking the new value if the spot is already taken. This helps keep things neat and efficient.

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