WooCommerce Add to Cart Button Redirect To Checkout

/**
 * Remove Cart Stage
 * @see: http://stackoverflow.com/questions/15592633/woocommerce-add-to-cart-button-redirect-to-checkout
 */
add_filter( 'add_to_cart_redirect', 'redirect_to_checkout' );
 
function redirect_to_checkout() {
    global $woocommerce;
    $checkout_url = $woocommerce->cart->get_checkout_url();
 
    return $checkout_url;
}