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kotlinlang

Feel like I'm missing something basic. Anyone know why this doesn't compile?

```var myCount by remember { mutableStateOf(0) }
val shouldDisplay = remember { derivedStateOf { (myCount &gt; 1) } }```

Make sure you have all the imports. There are a lot of extension functions required for the functionality. Intellij can help add imports automatically.

Seems to work… what error are you getting?

Yea, make sure to have these imports:
```import androidx.compose.runtime.derivedStateOf
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.getValue
import androidx.compose.runtime.setValue```


Screen Shot 2021-06-30 at 6.27.16 PM.png

All of my following composable fail after I add that line. Let me check the imports.

Screen Shot 2021-06-30 at 3.28.10 PM.png

Seems to work ok…yea might be something to do with your env/file?

Screen Shot 2021-06-30 at 6.28.29 PM.png

If I comment out that line then it works again.

What does the error say on AS ? (when you hover over `OutlineTextField`)

Restarting android studio did the trick. :sob:

Thank you everyone for checking my sanity.

Stupid question, is this approach preferred over a function/custom getter?

Do you mean regarding usage of `derivedStateOf` ?

Yes, `derivedStateOf` allows the Compose runtime to understand dependent functions and only recompute values if necessary.