如何在 hacklang 中迭代形状的字段？

Question

假设我有这样的身材

$something = shape(
  'some_key' => ...,
  'another_key' => ...,
  ...
);

如何迭代形状的每个字段？我正在寻找这样的东西

foreach ($something as $key) {
  ...
}

Answer 1

首先使用内置 HH\Shapes::toDict 转换为 dict 然后迭代：

foreach(HH\Shapes::toDict($something) as $k => $v) {
  // ...
}

How to iterate fields of a shape in hacklang?