Is there a shortcut in replacing characters in a string? My string is like this:
string x = "[\r\n \"TEST\",\r\n \"GREAT\"\r\n]";
I want to have an output of only
TEST,GREAT
Right now I'm formatting it like: x..Replace("\r\n", "").Replace("[", "") and until I put all the characters.
My question is there a shortcut to do that instead of many "Replace"? It does not matter if it will be a string or put in a List of string. As long as I have the result TEST,GREAT.
This looks like formatted JSON. So you could treat it as such!
string x = "[\r\n \"TEST\",\r\n \"GREAT\"\r\n]";
// Parse JSON to a list (could be anything implementing IEnumerable<>) of strings
var words= System.Text.Json.JsonSerializer.Deserialize<List<string>>(x);
// And join the values back together with a comma
var result = string.Join(',', words);
Console.WriteLine(result);
It looks like you want to remove the substrings, not replace them. You can use this extension method:
public static class RemoveExtensions
{
public static string RemoveMultiple(this string str, params string[] removes)
{
foreach (string s in removes)
{
str = str.Replace(s, "");
}
return str;
}
}
Use it like this:
string x = "[\r\n \"TEST\",\r\n \"GREAT\"\r\n]";
string result = x.RemoveMultiple("\r\n", "[", "]");
First of all, create a helper method to hide this:
public static string ExtractLetters(this string text) // it's an extension method
{
return text.Replace("\r\n", "").Replace("[", "")....;
}
now you can use it like this:
var extracted = "[\r\n \"TEST\",\r\n \"GREAT\"\r\n]".ExtractLetters()
already a bit better.
Since I think your goal isn't really to replace things, just etract what you want, you can use regex:
using System.Text.RegularExpressions;
public static string ExtractLetters(this string text)
{
var regex = new Regex("[a-zA-Z]+"); // define regex, look for regex compilation and instance caching for optimizations here
string[] matches = regex.Matches(text).Select(x => x.Value).ToArray(); // extract matches
return string.Join(",", matches); // join them if you want
}
To develop the regex, use a website like https://regex101.com/
