Exception handling

Exception handling

• Category: Exceptions
• Description: Raising an 'ArgumentException' exception, and filtering for .NET exceptions
• Code:

using Nemerle;
using System;
using System.Console;
using System.IO;

    try 
    {
        WriteLine("About to raise an ArgumentException exception...");
        if (DateTime.Now.DayOfWeek == DayOfWeek.Tuesday)
            throw System.ArgumentException("Not today, it's Tuesday")
        else 
            throw System.ApplicationException("Hey, it's not Tuesday...")
    }
    catch
    {
        | e is System.ArgumentException    => WriteLine($"Caught an ArgumentException, e.Message = $e")
        | e is System.ApplicationException => WriteLine($"Caught an ApplicationException, e.Message = $e")
        | _                                => WriteLine("Some other exception was caught")
    }

• Execution Result (in case of Tuesday):

About to raise an ArgumentException exception...
Caught an ArgumentException, e.Message = Not today, it's Tuesday

• Execution Result (in other cases):

About to raise an ArgumentException exception...
Caught an ApplicationException, e.Message = Hey, it's not Tuesday...

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