Exam 70-483 topic 2 question 9 discussion

Actual exam question from Microsoft's 70-483

Question #: 9
Topic #: 2

You are developing an application.
You need to declare a delegate for a method that accepts an integer as a parameter, and then returns an integer.
Which type of delegate should you use?

A. Action<int>
B. Action<int, int>
C. Func<int, int>
D. Func<int>

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Suggested Answer: C 🗳️

by supersunny at July 22, 2019, 3:08 p.m.

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supersunny

Highly Voted 5 years, 11 months ago

The delegate should be Func<int,int>. C.

upvoted 9 times

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Egor

Most Recent 5 years, 1 month ago

But Why two ints?

upvoted 2 times

CNTPD1

5 years ago

One is parameter, other is a return value. https://docs.microsoft.com/en-us/dotnet/api/system.func-2?view=netcore-3.1 public delegate TResult Func<in T,out TResult>(T arg);

upvoted 7 times

noussa

4 years, 5 months ago

True. The output is missing "out " before the return type: Func<int, out int>( ....)

upvoted 2 times

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memou

5 years, 1 month ago

Yup,action doesnt return anything afaik

upvoted 2 times

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