CODEWITHSUNDEEP
c#unity-game-engine
Ricardo R
Ricardo R

Reputation: 13

C#: Getting correct length of string

I'm currently trying to do string comparisons - I know it's not best to do so, but I need to for this solution.

If I were parsing a line such as: Raiden: HelloWorld, I would want to extract the separate strings Raiden and HelloWorld for further use.

I currently do achieve this by performing the following: var list = channelMessage.Split(' ', ':', '\n', '\0');

However, when printing the result and length of each item in list the HelloWorld string's length is incorrect.

Output:
Raiden | length: 6
HelloWorld | length: 11

HelloWorld's length should be 10, not 11. I'm assuming there's null characters somewhere in the line, but cannot figure out how to remove them all.

Sidenote: If I remember correctly, c#'s strings are arrays, and the last character of the array is a '\0' but I tried removing it (as seen above)

Is my assumption correct, and how can I correctly get HelloWorld's length to 10?

Upvotes: 1

Views: 179

Answers (3)

n234
n234

Reputation: 249

Split will likely give you trouble in this solution since it doesn't handle a huge range of input.

Something like a regex might be better because of the char ranges, something like \W+ would match any non-world sequence.

example: Regex.Split("asdadaSD asdsad asdsad \n asdasdsd", "\\W+")

Upvotes: 0

Joost K
Joost K

Reputation: 1116

you're supposed to use Trim() to remove whitespaces around a string See : https://learn.microsoft.com/en-us/dotnet/api/system.string.trim?view=netframework-4.8

This would result in

var list = channelMessage.Split(':').Select(s => s.Trim());

I'm also using the Select() from linq. This code would be similar to:

var list = channelMessage.Split(':');
var list2 = new List<string>();
foreach(string s in list)
    list2.add(s.trim());

Upvotes: 2

Casey Crookston
Casey Crookston

Reputation: 13965

The problem is that when you split Raiden: HelloWorld on : you end up with this:

Raiden
_HelloWorld

Where the _ represents an empty whitespace.

Here's one possible solution. When I run this console app:

static void Main(string[] args)
{
    var test = "Raiden: HelloWorld";
    List<string> split = test.Split(':').Select(t => t.Trim()).ToList();
    Console.WriteLine(split[0].Length);
    Console.WriteLine(split[1].Length);
    Console.ReadLine();
}

I get:

6
10

Upvotes: 0

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