How to get rid of if-else conditions in code

Question

I want create some console application. This application will work by parameters from input args[] array.

Like this: > app.exe -arg1 -arg2 -arg3:str3 -arg4:str4 -arg5 etc.

Where -arg1, -arg2, -arg5 the parameters for initialization variables in my app. The -arg3:str3 and -arg4:str4 the parameters with any string.

For example, if I sent the -arg1 then in my app I need initialization the var1 by any string. Like this:

foreach (string s in args)
{
    if(s.contains("-arg1")) someString1 = "someVal1";
    if(s.contains("-arg2")) someString2 = "someVal2";
    if(s.contains("-arg5")) someString5 = "someVal5";
    if(s.contains("-arg3")) someString3 = s.split(':')[1];
    if(s.contains("-arg4")) someString4 = s.split(':')[1];
}

I think that my solution is bad, because I need to test every argument in a loop and if I want to pass more new parameters I have to add new conditions.

Tell me please, maybe there are specific approaches to solving my problem? Or maybe there is some design pattern for such tasks?

EDIT: I can't use any libraries

If you are only concerned about the cmd line arguments, then there are some decent libraries. — Santhos, May 12 '15 at 11:02
@Santhos, of course, on SO, we do not allow folk to ask for library recommendations... ;) — David Arno, May 12 '15 at 11:03
@DavidArno: that is why it is not an answer but just a comment... ;) — Santhos, May 12 '15 at 11:03
@Santhos,@DavidArno,@JamesThorpe I see this answers, but I can't use any libraries — netwer, May 12 '15 at 11:05
@netwer Note that one of the answers uses things provided by Microsoft in the framework — James Thorpe, May 12 '15 at 11:06
@DavidArno This is one of the requirements for the solution to this task — netwer, May 12 '15 at 11:10
@netwer - your best bet then is to post the question on http://codereview.stackexchange.com/ and explain it's an assignment and that therefore you need a self-contained answer. That site is designed specifically for helping folk improve their code. — David Arno, May 12 '15 at 11:12
@DavidArno This code is stripped of context and will be closed as off-topic for being "example code" on CR. — Simon Forsberg, May 12 '15 at 11:17

How to get rid of if-else conditions in code

0 Answers0