maxviewup

// simple singleton instance getter - one line
Class Foo {
	private static $instance = null;
	
	public static function get_instance() {
		return self::$instance ?: self::$instance = new self;
	}
	// ...class code
}

maxviewup

// ----
// Sass (v3.4.21)
// Compass (v1.0.3)
// ----

// Class component
.component{
  color:red;
  @at-root section#{&} {
    color:blue;