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here's why you should be careful and probably not ever use it with Unity objects. blog post by @lucasmeijerhttps://blogs.unity3d.com/2014/05/16/custom-operator-should-we-keep-it/ …
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the null-coalescing operator (??) is a super neat way to quickly get a value or return a fallback in case it's null
(note however that it's unsafe to use it with objects deriving from UnityEngine.Object 
info in thread)
#unitytipspic.twitter.com/ikTcL6X8vd
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anyway here's me using it with Unity objectshttps://twitter.com/FreyaHolmer/status/1180449192902303745?s=20 …
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for more useful yet dangerous operators (that don't work well with Unity objects), check out the null conditional operator!https://twitter.com/FreyaHolmer/status/1082680949664612358?s=20 …
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and if you really want to use these operators safely with Unity objects, here's one way to do it!https://twitter.com/FreyaHolmer/status/1180472132565962753?s=20 …
if you want to use the ?? and ?. operators safely with Unity objects, here's the extension method for you~ pic.twitter.com/Puc5Pf3KYsDeze collectie tonen
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Hi Freya, I was wondering: are these three variants the same compiler-wise ?
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Generally I believe so yeah, unless the types have an overridden equality/inequality check, like Unity objects, in which case the first one will not use the overridden check, but the latter two will otherwise I think they compile to the same code!
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You can also use variable?.Foo() Lots of fun when it doesn’t melt down from unity bloat
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Thanks for these null tips. I would like to add that relying on null as a significant value may be a bad design. Null should represent a non-initialized object or an unexpected situation in most cases, in my opinion.
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Like you said in the thread, ?? is kinda not safe with UnityObjects. So throughout my code, i use something like: Health hp; hp = hp ? hp : GetComponent<Health>(); Would that be ok? Any weird gotchas there?
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This one should be fine given Unity's implicit bool cast which in and of itself do a null check! your code is equivalent to hp = hp != null ? hp : GetComponent<Health>();
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