Did you know you could access private properties 🤯 (but please don't do it in production)

[@v_pradeilles]

I'm going to say it here once more: do not use this trick in your production code 🙅🏻‍♂️ It's more than likely to get you into big troubles at one point or another ⚠️

[@HumbleHustle101]

This technique can be super helpful in testing the private properties in the unit tests. Thanks for the nice video.

[@donathmm3881]

Thank you. It Would be better if you could've shown us what this first child prints in the end

[@rahuljamba5846]

Great and excellent, Thanks for sharing your knowledge ❣❣❣

[@HumbleHustle101]

Nice video, is there any way that we can declare private types in protocols?

[@happycamperjack]

Hmmm…. looking at the mirror for “private” stuffs. I wonder how Vincent got this idea from 🤔

[@ArieP20]

Very well explained and a very cool technique using Mirror but in case of unit tests, couldn’t you have marked service as internal instead of private? Is it good practice to mark internal? I think I read something about it on Apple’s documentation.

[@mykytakhlamov]

great topic, thanks

[@sanadbarjawi5646]

Very good explanation!!

[@konstantinosnikoloutsos3402]

This is good but can we make it one step further and instead of string use something that will compile time check if property exists? Because if someone change his private class fields then we will only detect it at runtime. Can keypaths help us with this?

[@v_pradeilles]

Unfortunately the runtime aspect is an inherent part of the technique, I’m not aware of anyway to go around it 😕

[@ArvindYADAV-ex4mp]

Thanks, Vincent, for this wonderful tutorial but I am curious, can we set the value in private property? I have tried from my side using as a string, I can access the private variable, but I am not able to set any new value to that variable.

[@v_pradeilles]

Mirror is indeed a read-only API. So the only thing you could do, would be to mutate the state of a reference type property.

[@xingzhao2449]

it can only be used in Class not Struct right?

[@v_pradeilles]

I think Mirror should behave the same way with a struct.

[@CRivlaldo]

Vincent teaches kids bad stuff 😂