Is there a simpler way to code the following C# sentence

Question

Is there a simpler or alternate way to code the following C# sentence?

if (iValue >= 4 && iValue <= 10) {... other code ...}

Do I need to repeat the iValue twice?

I have seen a structure similar to _ = ...some code... but I am not familiar with that leading underscore?

I don't know why people are voting to close the question as duplicate.. None of the specified duplicates has the up-to-date answer, which is `if (iValue is >= 4 and <= 10)` — Youssef13, Oct 26 '22 at 11:57
@Youssef13 then add an answer to one of the existing questions? It looks like the answer is there though. — ProgrammingLlama, Oct 26 '22 at 12:03
Please re-state your comment as an ANSWER and I will post your answer as the answer....thanks. — John D, Oct 26 '22 at 12:08

score 5 · Accepted Answer · answered Oct 26 '22 at 11:59

5

With C#9 you can use:

if(iValue is >= 4 and <= 10)
{
    Console.WriteLine("in range");
}

answered Oct 26 '22 at 11:59

Tim Schmelter

I was wondering about the performance (micro-optimizations, I know) but this gives literally the same IL as `if(iValue >= 4 && iValue <= 10)`. So that's cool! – CompuChip Oct 26 '22 at 12:08

1 Answers1