C#

lmoelleb wrote:

The first suspicious thing I see is you call an async method SendMsgAsync() without waiting for it. This means your Main method can execute the code following myprog.sendMsg() before the message is put on the network.

lmoelleb wrote:

You should make your Main async as well and await the async calls - then it will not terminate before completion (and you will also see any errors). You might also when googling find advise to call .Result or .Wait. Those are excellent advise for people who like to debug why there software occasionally hangs after they make a completely unrelated change. Sure you can use them if you know how it really works under the hood - but that is not a good topic for a beginner.

Bruce Armstrong 2022 wrote:

The desired result is to stop using AOS objects

Bastard Programmer from Hell
"If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.

Member 15634071 wrote:

in CE (Central Europe) where I live it is comma

public static class Complex2
 {
     public static Complex ComplexParse(string text)   // (x, y) or (x+yi) or (x+yj) or (x-yi) or (x-yj)
     {
         string[] parts;
         string parsedText = text.Trim();
         if (parsedText.StartsWith("(") && parsedText.EndsWith(")"))
         {
             parsedText = parsedText.Substring(1, parsedText.Length - 2).Trim(); // Drop parentheses
             if (parsedText.Contains("+") && (parsedText.EndsWith("i") || parsedText.EndsWith("j")))
             {
                 parts = parsedText.Split('+');
                 if (parts.Length == 2)
                     return
                         new Complex(
                             real: double.Parse(parts[0].Trim()),
                             imaginary: double.Parse(parts[1].Substring(0, parts[1].Length - 1).Trim())
                             );

                 throw new ArgumentException("Complex number format not recognised (multiple '+' chars)");
             }
             else if (parsedText.Substring(1).Contains("-") && (parsedText.EndsWith("i") || parsedText.EndsWith("j")))   // (x-yi) or (x-yj) // Beware of (-x-yi) or (-x-yj)
             {
                 parts = parsedText.Substring(1).Split('-');
                 if (parts.Length == 2)
                     return
                         new Complex(
                             real: double.Parse(parsedText.Substring(0, 1) + parts[0].Trim()),
                             imaginary: -double.Parse(parts[1].Substring(0, parts[1].Length - 1).Trim())
                             );

                 throw new ArgumentException("Complex number format not recognised (multiple '+' chars)");
             }
             else if (parsedText.Contains(","))  // Hopefully in the form x, y
             {
                 parts = parsedText.Split(',');
                 if (parts.Length == 2)
                     return
                         new Complex(
                             real: Double.Parse(parts[0].Trim()),
                             imaginary: Double.Parse(parts[1].Trim())
                             );

                 // Too many commas. Can only diambiguate if one is followed by a space
                 int ix = parsedText.IndexOf(", ");
                 if (ix < 1)     // ", " not found or there is an empty real part
                     throw new ArgumentException("Complex number format not recognised (ambiguous use of commas)");

                 return
                     new Complex(
                         real: double.Parse(parsedText.Substring(0, ix).Trim()),
                         imaginary: double.Parse(parsedText.Substring(ix + 1).Trim())
                         );
             }
             else
                 throw new ArgumentException("Complex number format not recognised");
         }
         else
             throw new ArgumentException("Complex number not enclosed in parentheses");
     }

     public static bool ComplexTryParse(string text, out Complex ComplexOut)
     {
         try
         {
             ComplexOut = ComplexParse(text);
             return true;
         }
         catch (Exception)
         {
             ComplexOut = new Complex(0.0, 0.0);
             return false;
         }
     }
 }

public static class StringExtensions
 {
     public static Complex ComplexParse(this string fromText) =>
         Complex2.ComplexParse(fromText);

     public static bool ComplexTryParse(this string fromText, out Complex result) =>
         Complex2.ComplexTryParse(fromText, out result);
 }

class Program
{
    static void Main(string[] args)
    {
        // Should pass
        TryComplex("(1.0,0.5)");
        TryComplex("(1.1+0.55i)");
        TryComplex(" ( 1.023 + 0.512 j ) ");
        TryComplex("(0, -1)");
        TryComplex("(0-1i)");
        TryComplex("(-10-2j)");
        TryComplex("(-10,-3)");
        TryComplex(" ( 1.8-1i ) ");
        TryComplex(" ( 1.9+1i ) ");

        // Culture specific
        TryComplex("(1,4, 2,5)");   // (14, 25) in UK (extra ','s ignored)

        // Should fail
        TryComplex(" ( 1,1i ) ");
        TryComplex("(1,4,2,5)");
        TryComplex(" ( 1.023 + 0.512 + j ) ");
        TryComplex(" ( 1.023, 0.512 j ) ");
        TryComplex(" ( 1.023i 0.512 j ) ");

        Console.ReadKey();  // Wait to close the console window
    }

    static void TryComplex(string text)
    {
        Console.Write($"Trying {text}: ");

        try
        {
            Complex result = text.ComplexParse();
            Console.WriteLine($"({result.Real}, {result.Imaginary})");
        }
        catch (Exception ex)
        {
            Console.WriteLine($"*** Failed: {ex.Message} ***");
        }
    }
}

using System.Numerics;
using static ComplexParser.Complex2;    // Where ComplexParser is my outer namespace that contains the static class Complex2

TryComplex("(-8.98846567431158E+307, -8.98846567431158E+307)");

Trying (-8.98846567431158E+307, -8.98846567431158E+307): (-8.98846567431158E+307, -8.98846567431158E+307)
Trying (-8.98846567431158E+307,-8.98846567431158E+307): (-8.98846567431158E+307, -8.98846567431158E+307)
Trying (-8.98846567431158E+307+-8.98846567431158E+307i): *** Failed: Complex number format not recognised (multiple '+' chars) ***
Trying (-8.98846567431158E+307-8.98846567431158E+307i): *** Failed: Complex number format not recognised (multiple '+' chars) ***