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kotlinlang

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You might want this if you want to mutate the original list. `.map()` creates a copy of the original list

it makes sense, but it’s weird that I get this ..I tried to make it mutable list, same <https://i.imgur.com/UaqMvEv.jpg>

lol, if I say I want to use set() and then do the IDE suggestion and make it go back to above, it stops complaining

Probably it's changing the list for a mutableList

ok so if I grab the item again through `
```it.items.toMutableList()[searchMatchIdx].toggled```
it’s still false

I think I settled on this and it was a mistake, to place toMutableList() here
`
```it.items.toMutableList()[searchMatchIdx] =
    it.items[searchMatchIdx].copy(toggled = true)```


it's the order of the list important? if not you can do
```val elem = it.items.first { ..condition.. }
val list = (it.items - elem) + elem.copy(toggled = true)  ```

`toMutableList()` also makes a copy of the original list. You should define the original list as mutable if you want to mutate it.