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In C# 4, is there a good way to have an optional output parameter?
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When a method with an omitted optional parameter is called, a stack frame containing the values of all the parameters is created, and the missing value(s) are simply filled with the specified default values. However, an "out" parameter is a reference, not a value.
While you can't actually make the out parameter optional, you could simply create an overload for the function without the out parameter, which would then take away the need to create a temporary variable. This answer is more functional. No need to modify later on if you want to use it or not use it anymore.
Optional Parameters are parameters that can be specified, but are not required. This allows for functions that are more customizable, without requiring parameters that many users will not need.
Not really, though you can always overload the method with another one that does not take the output parameter.
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