public static string GetTempPathInDirectory(string?directory = null)
{
if (directory is null) // Could use Null-coalescing assignment
{
directory = Path.GetTempPath();
}
string fullName;
do
{
fullName = Path.Combine(directory, Path.GetRandomFileName());
}while (Directory.Exists(fullName) || File.Exists(fullName));
return(fullName);
}
//public static bool IsNull<T>(T thing) where T : class => thing is null;
//public static bool IsNull<T>(T? thing) where T : struct => thing is null;
public static string GetTempPathInDirectory2(string?directory = null)
{
string fullName;
do
{
if (IsNotNull(directory))
#pragma warning disable CS8604 // Leaving error in place for elucidation.
{
fullName = Path.Combine(directory, Path.GetRandomFileName());
}
#pragma warning restore CS8604
else
{
fullName = Path.Combine(Path.GetTempPath(), Path.GetRandomFileName());
}
}while (Directory.Exists(fullName) || File.Exists(fullName));
return(fullName);
}