Add memoizeSuccess functions to ZIO#10900
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🚀 Preview deployed to Netlify: https://pr-10900--zio-dev.netlify.app |
vagroz
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May 11, 2026
| * [[memoize]] For a variant that caches the result of the effect after its | ||
| * first execution, regardless of success or failure. | ||
| */ | ||
| final def memoizeSuccess(implicit trace: Trace): UIO[ZIO[R, E, A]] = |
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Can we create a helper that flattens the environment from the inner effect into the outer one?
like this:
ZIO[R1, E1, ZIO[R2, E2, A]] => ZIO[R1 & R2, E1, IO[E2, A]]
Of course, this is unrelated to the current PR, but it would simplify writing this kind of code quite a bit:
object A{
val make: RIO[B & Scope, A] = ???
}
class MyService(dep: Task[A]) { ... }
object MyService {
val layer: = ZLayer.scoped(
ZIO.environmentWith[B & Scope]{ r =>
A.make.memoizeSuccess.map { aRio =>
new MyService(aRio.provideEnvironment(r))
}
)
}
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Alternative implementation of #10791 that uses the same codepath as the new interruption handling