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C#: Equivalent of the python try/catch/else block


C#: Equivalent of the python try/catch/else block

By : Joseph
Date : October 17 2020, 11:12 AM
I wish this helpful for you I would prefer to see the rest of the code outside the try/catch so it is clear where the exception you are trying to catch is coming from and that you don't accidentally catch an exception that you weren't trying to catch.
I think the closest equivalent to the Python try/catch/else is to use a local boolean variable to remember whether or not an exception was thrown.
code :


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A Try-Catch Block Macro equivalent in C#?

A Try-Catch Block Macro equivalent in C#?


By : Nathan
Date : March 29 2020, 07:55 AM
it fixes the issue Here is a sample C++ macro that I use to make my code more readable and reduce the Try-Catch Clutter: , You can write helper:
code :
public static class ExcetpionHandler
{
    public static void StdTryCatch(this object instance, Action act)
    {
        try
        {
            act();
        }
        catch (Exception ex)
        {
            var method = instance.GetType().GetMethod("StdException");
            if (method != null)
            {
                method.Invoke(instance, new object[] {ex});
            }
            else
            {
                throw;
            }
        }
    }

}
public class MyClass
{
    public void StdException(Exception ex)
    {
        Console.WriteLine("Thrown");
    }

    public void Do()
    {
        this.StdTryCatch(() =>
                         {
                             throw new Exception();
                         });
    }
}
class Program
{   
    static void Main(string[] args)
    {
        var instance = new MyClass();
        instance.Do();
    }
}
public interface IExceptionHandler 
{
    void StdException(Exception ex);
}
public static class ExcetpionHandler
{
    public static void StdTryCatch(this IExceptionHandler instance, Action act)
    {
        try
        {
            act();
        }
        catch (Exception ex)
        {
            instance.StdException(ex);
        }
    }

}
Loading images in a try-catch block, have catch block respond to a specific failed image

Loading images in a try-catch block, have catch block respond to a specific failed image


By : Waseem Gorgi
Date : March 29 2020, 07:55 AM
wish of those help If image 2 fails to load, the exception would be thrown and only image 1 would be loaded.
How about creating a load method to do what you want? In that method you would have your try/catch default image processing.
code :
void main() {
    load(image1);
    load(image2);
    load(image3);
}
void load(image) {
    try {
       loadFile(image);
    }
    catch {
      loadFile(default);
    }
}
Try-Catch Block not reachable? Does having an inner try-finally block cause the outer try-catch block to be unreachable?

Try-Catch Block not reachable? Does having an inner try-finally block cause the outer try-catch block to be unreachable?


By : noah
Date : March 29 2020, 07:55 AM
With these it helps Is it a Kotlin thing for "TODO" statement to invalidate and make the code underneath unreachable? It seems I had to comment out the TODO comment above the try block to make it reachable.
How to catch all exceptions in Try/Catch Block Python?

How to catch all exceptions in Try/Catch Block Python?


By : alvis.qin
Date : March 29 2020, 07:55 AM
I hope this helps . You can catch several exceptions using one block. Let's use Exception and ArithmeticError for exceptions.
code :
try:
    # Do something
    print(q)

# Catch exceptions  
except (Exception, ArithmeticError) as e:
    template = "An exception of type {0} occurred. Arguments:\n{1!r}"
    message = template.format(type(e).__name__, e.args)
    print (message)
try:
    # Do something
    print(q)

# Catch exceptions  
except Exception as e:
    print (1)

except ArithmeticError as e:
    print (2)

# Code to be executed if the try clause succeeded with no errors or no return/continue/break statement

else:
    print (3)
if isinstance(e, MyCustomException):
    # Do something
    print(1)
install(required_libraries)

def install(required_libraries, version='pip2.7'):
    # Perform installation
    try:
        from subprocess import check_output
        pip27_path = subprocess.check_output(['sudo','find','/','-name', version])
        lib_installs = [subprocess.call((['sudo',pip27_path.replace('\n',''),'install', i])) for i in required_libraries]

    except Exception as e:
        backup(required_libraries)

def backup(required_libraries, version='pip2.6'):
    try:
        p = subprocess.Popen(['sudo','find','/','-name',version]], stdout=subprocess.PIPE);pip26_path, err = p.communicate()
        lib_installs = [subprocess.call((['sudo',pip26_path.replace('\n',''),'install', i])) for i in required_libraries]

    except Exception as e:
        template = "An exception of type {0} occurred. Arguments:\n{1!r}"
        message = template.format(type(e).__name__, e.args)
        print (message)

        #Handle exception
I have a piece of code i.e a method with try and catch block. The catch block catches the exception how can I write the

I have a piece of code i.e a method with try and catch block. The catch block catches the exception how can I write the


By : Remus R.
Date : March 29 2020, 07:55 AM
around this issue You can assert that error message is not null for the thirdPartyResponse object that's returned from your method:
code :
assertNotNull(thirdPartyResponse.getErrorMessage());
import static org.junit.Assert.assertNotNull;
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