Null out parameters in C#?

Question

After reading on stackoverflow that in the case of checking the format of a DateTime you should use DateTime.TryParse. After trying some regex expressions they seem to get l

Answer 1

With C#7.0 (since August 2016) you can use the out var construct, and then just ignore the new var in subsequent code.

bool success = DateTime.TryParse(value, out var result);

If you truly do not care about the value of the result, use discards:

bool success = DateTime.TryParse(value, out _);