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Sorry English is not my first language, how should I phrase the description?
Cool. So it's essentially a coalesce, such as in TSQL.
It is referred to in the official C# documentation as a null coalescing operator, so yes.
The explanation of what this is doing does NOT match what it actually does: ?? returns the value on the right if the variable on the left is null, else it returns the value of the variable on the left.
The explanation given is more accurate for the ??= operator.
See https://docs.microsoft.com/...
Funnily enough, the comment provided is a better explanation than the description.