Code works, but why does this work?

[jonpur]

So everything is working but I don’t understand how this bit is actually working:

foreach (Transform child in transform)
{
    child.gameObject.SetActive(shouldShow)
}

How does the foreach loop know you want to iterate over the children in the Transform? How does it know that transform is not just an object?

[bixarrio]

The Transform type implements the IEnumerable interface. This means the Transform also acts like a List or Array of child transforms.

[jonpur]

That is good to know. Thank you very much for the explanation.