What is the purpose of adding `name('register')` after Laravel routing?

Question

What is the function of the following route followed by name('register')?

$this->get('register', 'Auth\RegisterController@showRegistrationForm')->name('register');

Answer 1

Route name, easy to generate url

Answer 2

The

where method constrains the parameters passed in by the previous route, such as

Route::get('user/{name}', function ($name) {
    //
})
->where('name', '[A-Za-z]+');

The previous name parameter must match the following regular expression to call the following callback function.