[已解决] public function build (BuilderInterface $builder): Vehicle 这种结构怎么理解? 冒号怎么解读
class Director
<?php
namespace DesignPatterns\Creational\Builder;
use DesignPatterns\Creational\Builder\Parts\Vehicle;
/**
* Director is part of the builder pattern. It knows the interface of the builder
* and builds a complex object with the help of the builder
*
* You can also inject many builders instead of one to build more complex objects
*/
class Director
{
public function build(BuilderInterface $builder): Vehicle
{
$builder->createVehicle();
$builder->addDoors();
$builder->addEngine();
$builder->addWheel();
return $builder->getVehicle();
}
}
看了前面一个帖子,明白了
https://laravel-china.org/topics/16936
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