<?php
namespace Blog\Core;

class Container {
  private array $instances = [];

  public function set(string $key, callable $factory): void {
    $this->instances[$key] = $factory;
  }

  public function get(string $key): mixed {
    if(!isset($this->instances[$key])) {
      throw new Exception("No instance found for {$key}");
    }
    return $this->instances[$key]($this);
  }
}