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[-] Traister101@lemmy.today 6 points 9 months ago* (last edited 9 months ago)

It's part of the type yet it's also a unique identifier. That's the whole thing with east or west const. const int * is a ~~immutable~~ mutable pointer that points to ~~mutable~~ immutable memory. int *const is a ~~mutable~~ immutable pointer that points to ~~immutable~~ memory. int const * is the same type as the first example, a ~~immutable~~ mutable pointer that points to ~~mutable~~ immutable memory.

Same stuff applies to references which makes it easier to think of the variable owning the * or & as if you want that pointer or reference to be const it has to go after.

Edit:I am a moron who managed to get it exactly backwards :|

[-] Valmond@lemmy.mindoki.com 7 points 9 months ago

Found the guy that can probably do function pointers!

[-] SpaceNoodle@lemmy.world 4 points 9 months ago

I wrote a couple unholy lines of C++ the other day using the ternary conditional operator to select a class member function to be called with a fixed argument.

I think my teammates were too scared to call me out on it.

[-] YaBoyMax@programming.dev 1 points 9 months ago
[-] SpaceNoodle@lemmy.world 3 points 9 months ago

It's actually simpler than doing it the "right" way, but I wanted to see how much I could make C++ pretend it was Python.

[-] Traister101@lemmy.today 3 points 9 months ago

Lol yeah. I don't even really write C++ but I sure as shit know a bunch of syntax and junk haha

[-] YaBoyMax@programming.dev 3 points 9 months ago

I think you've got it backwards. I learned to read pointer decls from right-to-left, so const int * is a (mutable) pointer to an int which is const while int *const is a const pointer to a (mutable) int.

[-] Traister101@lemmy.today 2 points 9 months ago

Fuck me man that's what I get for writing that just before bed

[-] blackstrat@lemmy.fwgx.uk 1 points 9 months ago

I always read it right to left and it seems to make sense to me.

this post was submitted on 02 Feb 2024
295 points (96.8% liked)

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