Would be nice if extension functions for `Sequence...

# stdlib

[edrd]

Would be nice if extension functions for Sequence were annotated with @Terminal or something like that to allow easier creation of automated checks for expressions that don't do anything because the developer forgot to call a terminal operation. Me and my team just spent ~2 hours trying to figure out why our code wasn't working after replacing a forEach call with map. A detekt rule / IntelliJ inspection would help a lot in this case.

[araqnid]

Like https://errorprone.info/bugpattern/CheckReturnValue

[edrd]

Exactly

[edrd]

https://youtrack.jetbrains.com/issue/KTIJ-7061

[Javier]

You can suggest it in #detekt channel, it is interesting

[louiscad]

I think it's more a language design thing (rather than solely stdlib). The use case seems reasonable, and it also affects Flows and many other APIs, so I'm curious about @elizarov's current stance on that.

[elizarov]

There's an issue for that: https://youtrack.jetbrains.com/issue/KT-12719