Working with strings and ternary operator

readme.md

Some useful string extensions making use of ternary operator and indexors.

Usage

string sentence = "Hello    World  nice to be   here      ";
Console.WriteLine($"'{sentence}'");
Console.WriteLine($"'{sentence.RemoveExtraSpaces()}'");
Console.WriteLine($"'{sentence.RemoveExtraSpaces().TrimLastCharacter()}'");
Console.WriteLine($"'{sentence.RemoveExtraSpaces().ReplaceLastOccurrence(" ", "!!!")}'");

Extensions.cs

using System.Text.RegularExpressions;

public static class StringExtensions
{
    // remove double spaces
    public static string RemoveExtraSpaces(this string sender, bool trimEnd = false)
    {
        const RegexOptions options = RegexOptions.None;
        var regex = new Regex("[ ]{2,}", options);
        var result = regex.Replace(sender, " ");

        return trimEnd ? result.TrimEnd() : result;

    }

    // trim end 
    public static string TrimLastCharacter(this string sender)
        => string.IsNullOrWhiteSpace(sender) ?
            sender :
            sender[..^1];

    // replace last occurrence with replacement.
    public static string ReplaceLastOccurrence(this string sender, string find, string replace)
    {
        int place = sender.LastIndexOf(find, StringComparison.Ordinal);
        return place == -1 ?
            sender :
            sender.Remove(place, find.Length)
                .Insert(place, replace);
    }
}