如何在hacklang中迭代形状的字段

Question

假设我有一个类似的形状

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

如何迭代形状的每个字段？我在找类似的东西

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

Answer 1

先用内置的HHShapes::toDict转换为dict，然后迭代：

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