functional-php / trampoline

test.php

<?php

require_once('vendor/autoload.php');

use FunctionalPHP\Trampoline\Pool as p;

$fact = P::get(function($n, $acc = 1) {
    return $n <= 1 ? $acc : $this($n - 1, $n * $acc);

The variable $this does not exist. Did you forget to declare it?

});

echo $fact(5);