I know that in most programming scenarios, the preference is for empty collections to null collections when there are 0 elements. However, most languages that consume JSON (like JavaScript) will treat empty lists/objects as true and null ones as false. For example this would be both true and an object in JavaScript:
{
"items_in_stock": {"widgets":10, "gadgets": 5}
}
但这也是事实:
{
"items_in_stock": {}
}
And this is false:
{
"items_in_stock": null
}
JSON是否有关于空对象/列表的约定？那么数字、布尔值和字符串呢？