How to check if current page is frontpage in drupal 8 - drupal_is_front_page drupal 8

How to check if current page is frontpage in drupal 8 

During the Drupal 8 development cycle a path.matcher was introduced which deprecated most procedural functions in path.inc
Drupal 7:

$path_matches = drupal_match_path($path, $patterns);
$is_front = drupal_is_front_page();

Drupal 8:

$path_matches = \Drupal::service('path.matcher')->matchPath($path, $patterns) ;
$is_front = \Drupal::service('path.matcher')->isFrontPage();

reff links: 

https://www.drupal.org/node/2274675 

 
Deprecated by path.matcher service.
https://www.drupal.org/node/2274675