"wisemans" reFUCKtroing

gistfile1.cs

// version before refactoring 
using (var key = Registry.CurrentUser.OpenSubKey(RegistryKey, true))
{
	var obfuscator = new ViewNameObfuscator("whatever");
	key.SetValue("password", obfuscator.Obfuscate(value));
	key.Close();
}
	
// version after refactoring - the functionality remained the same - exacly the same
return ReadValueFromRegistry(PasswordKeyName, Deobfuscate);

private string ReadValueFromRegistry(string keyName, Func<string, string> transformation = null)
{
	using (var key = OpenKeyForRead())
	{
		if (key == null)
			return null;
		var value = key.GetValue(keyName) as string;
		return transformation != null ? transformation.Invoke(value) : value;
	}
}
		
private static string Deobfuscate(string value)
{
	return TransformByObfuscator(value, (x, y) => x.Deobfuscate(y));
}
		
private static string TransformByObfuscator(string value, Func<ViewNameObfuscator, string, string> transformation)
{
	var obfuscator = new ViewNameObfuscator("D0B64B7A6099");
	return transformation.Invoke(obfuscator, value);
}