What it means: if(val1 is int val2)

Question

I went for one interview Interviewer asked me this question What it means: if(val1 is int val2) Actual I know that is we used to check val1 value is int type or not but what is the meaning to add val2 after this.

Tapan Patel · Answer

it is a feature of C# 7.0 (https://docs.microsoft.com/en-us/dotnet/csharp/pattern-matching) called pattern matching. It sees if your variable val1 matches with pattern of int val2 meaning if signature matches then it intializes val2 with val1.

tushar · Answer

I have tried on my VS 15 it is giving me compile time error.