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What purpose does out parameter serves ?

Rikam Palkar

If I have to initialise parameter inside method and my method has to update parameter's value. I would just change return type of method to return the updated value. Why would I need out parameter? What difference does it makes?

2 Replies

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Rajanikant Hawaldar6y ago
Accepted answer
Out parameters are generally used when a method returns multiple values.
+3
Nilanjan Dutta6y ago
Although it is right to say that 'out' is majorly used for the cases where a method needs to return more that one parameter, we should also keep a note that this doesn't really work with asyn method because of the CLR limitation.

Tuples, introduced in C# 7 is my personal favourite for the use-case of returning multiple values from a method.
+2