Question

I am trying to make a simple script interpreter in my application. A valid script to use in my application will be something like:

#this is a comment
*IDN? #this is a comment after a valid command
:READ? #this was also a comment after a valid command
RST
#last line was a valid comment but with no comment!

Now after loading the script content inside an array of string I want to execute each line, if it does not start with # and also ignor # in the same line if it exsist:

    foreach(var command in commands)
    {
        if(!command.StartsWith("#"))
        {
            _handle.WriteString(command);
        }
    }

My code will take care of starting comments. But how to check for inline comments?

I got this idea, Will this code be IDIOT-PROOF ?

        foreach(var command in commands)
        {
            if(!command.StartsWith("#"))
            {
                if(command.IndexOf('#') != null)
                {
                    _handle.WriteString(command.Remove(command.IndexOf('#')));
                }
            else
                _handle.WriteString(command);
            }
        }

Answer 1

Rephrase your question – another way to phrase it is that you want to process the part of each line that appears before the first # sign. Which would be the first element of the array returned by String.Split:

foreach(var command in commands)
{
    var splits = command.Split('#');
    if(!String.IsNullOrEmpty(splits[0]))
    {
        _handle.WriteString(splits[0]);
    }
}

And this now deals with the # character, wherever it appears in the line.