Different versions of GetFirstDirectoryFrom

GetFirstDirectoryFrom1.cs

public DirectoryInfo GetFirstDirectoryFrom(params string[] list)
{
    foreach (var item in list)
    {
        var directory = new DirectoryInfo(item);
        if (directory.Exists)
            return directory;
    }
    return null;
}

GetFirstDirectoryFrom2.cs

public DirectoryInfo GetFirstDirectoryFrom(params string[] list)
{
    return list.Select(l => new DirectoryInfo(l)).Where(d => d.Exists).FirstOrDefault();
}

GetFirstDirectoryFrom3.cs

public DirectoryInfo GetFirstDirectoryFrom(params string[] list)
{
    return list.Select(l => new DirectoryInfo(l)).SkipWhile(d => !d.Exists).FirstOrDefault();
}