null字段或bool = mongoDB中的true
假设我希望游戏中的某些物品可穿戴，而另一些则不是。我可以使用{“可耐磨性”：true}带有{“可耐磨性”：false}，或{“可耐磨性”：null}使用{}。乍一看，第二个解决方案看起来更笨拙，但表现可能会有些笨拙，但性能并不是这里最重要的事情。
想象一下，我们需要10个这样的布尔值：可穿戴，可放置，装备等。那么，它不仅是更多的磁盘空间，而且每个游戏项目的文档也变得肿，使用并不是很好。相反，我们只能在需要它们的地方才有这些字段。但是，然后{“可穿戴”：null}看起来不会很直观。如果有人可以编写{“可穿戴”}，这将是完美的，这意味着与{“可戴”：null}相同，但不幸的是没有这样的东西。也许，我缺少一些重要的东西，这将是一个更好的解决方案。
因此，我应该在这里使用布尔字段，空字段还是有其他更好的解决方案？
Let's say I want some items in my games to be wearable, and others not. I could do it using either {"wearable": true} with {"wearable": false}, or {"wearable": null} with {}. The second solution looks clunkier at first glance but is probably a little more performative, yet performance is not the most important thing here.
Imagine we need 10 such booleans for each item: wearable, placeable, equipable, etc. Then it's not just more disk space, but also each document for a game item becomes bloated and not very nice to use. Instead, we could have these fields only where we need them. But then {"wearable": null} doesn't look very intuitive. It would be perfect if one could write {"wearable"} and it would mean the same as {"wearable": null}, but unfortunately there's no such thing. Perhaps, I'm missing something important that would be a better solution here.
So should I use boolean fields, null fields, or there's a different better solution here?
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