Unable to do a mutable pointer capture on the result of array.popOrNull()

[candid stirrup]

popOrNull doesnt return a pointer it just returns the element that was removed, what exactly are you trying to do?

https://ziglang.org/documentation/master/std/#A;std:ArrayList.popOrNull
popOrNull removes the last element, it doesnt make sense to mutate the result

[fluid zealot]

no

you're capturing a pointer to a temporary value

the last value is copied from the array

the length is decremented

and then the value is returned, copied

with the index it once occupied now being out of bounds

[candid stirrup]

its a temporary value

it gets destroyed after its used, if you want to mutate it you need to assign it to a variable

[fluid zealot]

aye, temporaries are always constant values

[candid stirrup]

both allow the same thing, this not working is just because popOrNull returns a temporary

[fluid zealot]

if you mean capturing by pointer in a for loop, that's because you get an actual pointer into the actual array/slice

if the array/slice is mutable, you will have a mutable pointer

if it's constant, it will be a constant pointer