C# Help...

[Nickolas]

I need help on a (C#) switch statement. I want to excecute the same code if a char is a letter (a-z, A-Z but not a number or a symbol).

I've thought of this.

Code: Select all

switch (ch) {
   case 'a':
      //My code...
      break;
   case 'b':
      //My code...
      break;      
//And so on...
}     
 

Since I want the same code to be excecuted for all letters is there an easier way to write this?

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[m0skit0]

I have no idea about C#, but meh...

Classic way:

Code: Select all

if ((ch >= 'A' && ch <= 'Z') || (ch >= 'a' && ch <= 'z'))
{
    // Your code
}

Or using Regex class you can use regular expressions, that is:

Code: Select all

Match match = Regex.Match(ch, @"[a-z]", RegexOptions.IgnoreCase);
if (match.Success)
{
    // Your code
}

I think with regexps you need to use char strings, but I'm not sure since I've never used C#.

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[Nickolas]

Oh, so I can use '<' and '>' with letters? I didn't know that. Thanks! I don't want to use the regex method because I don't know if it has been implemented in Mono. (I am thinking of porting my application to the Mono Framework...)

Anyway, I'll try it and tell you if it worked.

[m0skit0]

so I can use '<' and '>' with letters?

Well, I'm not 100% sure since I've never used C#, but most likely yes since almost all languages allow that (specially C and C++ in which syntax C# is inspired).

I don't want to use the regex method because I don't know if it has been implemented in Mono

It's an external library, and yes it is: http://sourceforge.net/projects/deveel-regex/

[varun]

ur code should have worked

[m0skit0]

Dude, we already know his code works. Next time read the question before posting useless stuff:

is there an easier way to write this?

[varun]

sorry my fault.
there is another way but i am not sure if it is eaier.- using conditional operator(?) and then nesting it

http://www.cplusplus.com/doc/tutorial/operators/

[m0skit0]

I almost never use conditional operator, it's bad for legibility.