I’ve upgraded to <#C01D6HTPATV|compose-desktop> 0....

# compose

[orangy]

I’ve upgraded to #compose-desktop 0.4.0-build183 and started getting this error:

e: …/SnakeLayout.kt: (30, 42): Type inference failed. Expected type mismatch: inferred type is @Composable() (Int, T) -> Unit but (Int, T) -> Unit was expected

Code is kinda like this:

fun <T> SnakeLayout(…,
    content: @Composable (Int, T) -> Unit) {
    Layout(…,
        content = { items.forEachIndexed(content) } // here
    ) { … }
}

If I expand the call to items.forEachIndexed { i, t -> content(i,t) } it works fine. In version 0.4.0-build180 both variants worked.

(posting here, because I believe it is more to do with compiler plugin than desktop lib)

[Dominaezzz]

Somewhere on this channel is a ticket about the compose compiler plugin recently not handling inline functions properly. It's probably the same as this.

[Adam Powell]

Yeah I'd wager that it's the same issue. @Composable functions have extra hidden parameters so passing content to forEachIndexed isn't having the expected results. Use the lambda call syntax instead with braces and explicitly passing the parameters to content and you should be back up and running.

[Adam Powell]

Please feel free to file an issue on the tracker and we'll deduplicate it as needed.