Syntax Error in array parenthesis in C# official doc

[luthentic]

Describe the issue or suggestion

https://learn.microsoft.com/en-us/dotnet/csharp/language-reference/builtin-types/value-tuples#code-try-3

there are syntax errors on the declaration

must be corrected int[] xs = {4,7,9};
int[] ys = {-9, 0, 67, 100};

int[] xs = [4, 7, 9];
var limits = FindMinMax(xs);
Console.WriteLine($"Limits of [{string.Join(" ", xs)}] are {limits.min} and {limits.max}");
// Output:
// Limits of [4 7 9] are 4 and 9

int[] ys = [-9, 0, 67, 100];
var (minimum, maximum) = FindMinMax(ys);
Console.WriteLine($"Limits of [{string.Join(" ", ys)}] are {minimum} and {maximum}");
// Output:
// Limits of [-9 0 67 100] are -9 and 100

(int min, int max) FindMinMax(int[] input)
{
if (input is null || input.Length == 0)
{
throw new ArgumentException("Cannot find minimum and maximum of a null or empty array.");
}

// Initialize min to MaxValue so every value in the input
// is less than this initial value.
var min = int.MaxValue;
// Initialize max to MinValue so every value in the input
// is greater than this initial value.
var max = int.MinValue;
foreach (var i in input)
{
    if (i < min)
    {
        min = i;
    }
    if (i > max)
    {
        max = i;
    }
}
return (min, max);

}

---

Associated WorkItem - 256835

[rextor92]

Hey, check this article on arrays and its note on collection expressions.

It is valid code, but it requires C# 12 and it seems sample runner doesn't support that. You will be able to run the code locally with .NET 8.

[BillWagner]

I did open a PR to fix this so that it runs in the online sandbox.

Note: I'll make a set of updates once the service is updated with the C# 12 bits.

[luthentic]

Thank you for your email! I understand that now Thanks!

…

On Tue, May 21, 2024 at 10:19 AM Bill Wagner ***@***.***> wrote: I did open a PR to fix this so that it runs in the online sandbox. Note: I'll make a set of updates once the service is updated with the C# 12 bits. — Reply to this email directly, view it on GitHub <#41000 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AIADIVUFE24UBYA7CMALTOTZDNJXNAVCNFSM6AAAAABH5DCC2CVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDCMRSG42DQOJTG4> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[luthentic]

ohh thanks I understand now!

…

On Mon, May 20, 2024 at 3:22 PM Daniel Tsvetkov ***@***.***> wrote: Hey, check this article on arrays <https://learn.microsoft.com/en-us/dotnet/csharp/language-reference/builtin-types/arrays> and its note on collection expressions. It is valid code, but it requires C# 12 and it seems sample runner doesn't support that. You will be able to run the code locally with .NET 8. — Reply to this email directly, view it on GitHub <#41000 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AIADIVQACWNDLKYJ3X4PEH3ZDJEQ7AVCNFSM6AAAAABH5DCC2CVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDCMRRGA2TQOJWGM> . You are receiving this because you authored the thread.Message ID: ***@***.***>