What am I missing here? This should compile, right...

# coroutines

[uhe]

What am I missing here? This should compile, right?

GlobalScope.launch {
            flowOf(1,2,3,4,5)
                .delayEach(500)
                .map { it * it }
                .collect { println(it) } // Type mismatch: inferred type is () -> ??? but FlowCollector<Int> was expected
        }

[thana]

for me it does compile...

[streetsofboston]

This may have improved with the new type inference of Kotlin v1.3.40. Malte may have that newest version, while you may have 1.3.31 or older...

[thana]

even with 1.3.31 is seems to work well: https://pl.kotl.in/RYtHet74G

[Vlad]

Check your imports for kotlinx.coroutines.flow.collect

[uhe]

I tested this with both 1.3.40 and 1.3.31

[uhe]

I'll try the good ol' invalidate caches & restart, I guess

[uhe]

Well I'll be damned, I actually had to manually import the collect extension, because apparently without the import it references Flow::collect, resulting in the compile error.
That's... unfortunate. Thanks @Vlad

[elizarov]

Does it reproduce?

[uhe]

In my project it does. I'll try to reproduce it in a fresh one.

[uhe]

It does actually. I mean, it can be easily remedied by pressing CTRL+Space on the collect method and selecting the extension function instead. It's just that the error was a bit misleading in the beginning, because a different collect method is being referenced by default (the one with @InternalCoroutinesApi in Flow).