Laravel 通用集合

Question

我的 Java 经验告诉我，我可以像这样创建通用集合：

Collection<E> collection = new Collection<E>();

我想知道这在 Laravel（至少 5.2+）中是否可行？我已经使用 Laravel 将近 3 年了，现在只是想知道这个问题。

例如，我在创建一个 Laravel 模型转换器函数时想到了这一点，如下所示：

当前Laravel函数：

public function transformMultiple(Collection $models){

        $collection = collect();

        foreach($models as $m){
            $collection->push($this->transform($m));
        }

        return $collection;
    }

使用泛型的假设函数：

public function transformMultiple(Collection<Foo> $models){

        $collection = collect();

        foreach($models as $m){
            $collection->push($this->transform($m));
        }

        return $collection;
    }

Answer 1

感谢@AlexSlipKnot 的评论，我相信 PHP 目前不支持泛型；然而，it may support it in the future. His other link in the comments (a Whosebug answer to a similar question) also provides in-depth guidelines to custom implementations; however, if one is to develop their own custom implementation, they need to beware of applicable O.O Design Principles.

Laravel 通用集合

Laravel Generic Collections

php

laravel

laravel-5

laravel-5.2

laravel-5.3