How to figure out the functor for cats.Parallel?
Because IntelliJ does not play all that nicely with Cats, I am sometimes explicit about type parameters in my code to avoid ugly red lines. For example, if we assume this gives a red line under IO.pure(x.toString),
List(1, 2, 3).traverse(x => IO.pure(x.toString))
then I can easily add the types and IntelliJ is happy:
List(1, 2, 3).traverse[IO, String](x => IO.pure(x.toString))
Now, with parTraverse it seems a bit more difficult because of the functor parameter:
List(1, 2, 3).parTraverse[IO, ???, String](x => IO.pure(x.toString)) //what is ???
Is there any way to figure out the type of the F[_] parameter here so I can please IntelliJ or is this some partial unification thing and so I'm doomed to ugliness? Thanks
scala intellij-idea implicit scala-cats
edited Nov 13 '18 at 13:12
Andrey Tyukin
26.8k42348
asked Nov 12 '18 at 23:41
Lasf
1,242822
add a comment |
Because IntelliJ does not play all that nicely with Cats, I am sometimes explicit about type parameters in my code to avoid ugly red lines. For example, if we assume this gives a red line under IO.pure(x.toString),
List(1, 2, 3).traverse(x => IO.pure(x.toString))
then I can easily add the types and IntelliJ is happy:
List(1, 2, 3).traverse[IO, String](x => IO.pure(x.toString))
Now, with parTraverse it seems a bit more difficult because of the functor parameter:
List(1, 2, 3).parTraverse[IO, ???, String](x => IO.pure(x.toString)) //what is ???
Is there any way to figure out the type of the F[_] parameter here so I can please IntelliJ or is this some partial unification thing and so I'm doomed to ugliness? Thanks
scala intellij-idea implicit scala-cats
edited Nov 13 '18 at 13:12
Andrey Tyukin
26.8k42348
asked Nov 12 '18 at 23:41
Lasf
1,242822
add a comment |
Because IntelliJ does not play all that nicely with Cats, I am sometimes explicit about type parameters in my code to avoid ugly red lines. For example, if we assume this gives a red line under IO.pure(x.toString),
List(1, 2, 3).traverse(x => IO.pure(x.toString))
then I can easily add the types and IntelliJ is happy:
List(1, 2, 3).traverse[IO, String](x => IO.pure(x.toString))
Now, with parTraverse it seems a bit more difficult because of the functor parameter:
List(1, 2, 3).parTraverse[IO, ???, String](x => IO.pure(x.toString)) //what is ???
Is there any way to figure out the type of the F[_] parameter here so I can please IntelliJ or is this some partial unification thing and so I'm doomed to ugliness? Thanks
scala intellij-idea implicit scala-cats
edited Nov 13 '18 at 13:12
Andrey Tyukin
26.8k42348
asked Nov 12 '18 at 23:41
Lasf
1,242822
Because IntelliJ does not play all that nicely with Cats, I am sometimes explicit about type parameters in my code to avoid ugly red lines. For example, if we assume this gives a red line under IO.pure(x.toString),
List(1, 2, 3).traverse(x => IO.pure(x.toString))
then I can easily add the types and IntelliJ is happy:
List(1, 2, 3).traverse[IO, String](x => IO.pure(x.toString))
Now, with parTraverse it seems a bit more difficult because of the functor parameter:
List(1, 2, 3).parTraverse[IO, ???, String](x => IO.pure(x.toString)) //what is ???
Is there any way to figure out the type of the F[_] parameter here so I can please IntelliJ or is this some partial unification thing and so I'm doomed to ugliness? Thanks
scala intellij-idea implicit scala-cats
scala intellij-idea implicit scala-cats
edited Nov 13 '18 at 13:12
Andrey Tyukin
26.8k42348
asked Nov 12 '18 at 23:41
Lasf
1,242822
edited Nov 13 '18 at 13:12
Andrey Tyukin
26.8k42348
asked Nov 12 '18 at 23:41
Lasf
1,242822
edited Nov 13 '18 at 13:12
Andrey Tyukin
26.8k42348
edited Nov 13 '18 at 13:12
Andrey Tyukin
26.8k42348
edited Nov 13 '18 at 13:12
Andrey Tyukin
26.8k42348
26.8k42348
asked Nov 12 '18 at 23:41
Lasf
1,242822
asked Nov 12 '18 at 23:41
Lasf
1,242822
asked Nov 12 '18 at 23:41
Lasf
1,242822
1,242822
add a comment |
add a comment |
1 Answer
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If you go to the scaladoc api of cats-effects, and search for Parallel instances, it lists you just a single implicit method that produces Parallel[IO, ???], namely Parallel[IO, Par] provided by cats.effect.IO.ioParallel. So, it seems that cats.effect.IO.Par should do the trick:
List(1, 2, 3).parTraverse[IO, Par, String](x => IO.pure(x.toString))
answered Nov 13 '18 at 2:41
Andrey Tyukin
26.8k42348
1
You're the best, man, seriously thanks
– Lasf
Nov 13 '18 at 3:38
add a comment |
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1 Answer
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1 Answer
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active
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votes
If you go to the scaladoc api of cats-effects, and search for Parallel instances, it lists you just a single implicit method that produces Parallel[IO, ???], namely Parallel[IO, Par] provided by cats.effect.IO.ioParallel. So, it seems that cats.effect.IO.Par should do the trick:
List(1, 2, 3).parTraverse[IO, Par, String](x => IO.pure(x.toString))
answered Nov 13 '18 at 2:41
Andrey Tyukin
26.8k42348
1
You're the best, man, seriously thanks
– Lasf
Nov 13 '18 at 3:38
add a comment |
If you go to the scaladoc api of cats-effects, and search for Parallel instances, it lists you just a single implicit method that produces Parallel[IO, ???], namely Parallel[IO, Par] provided by cats.effect.IO.ioParallel. So, it seems that cats.effect.IO.Par should do the trick:
List(1, 2, 3).parTraverse[IO, Par, String](x => IO.pure(x.toString))
answered Nov 13 '18 at 2:41
Andrey Tyukin
26.8k42348
1
You're the best, man, seriously thanks
– Lasf
Nov 13 '18 at 3:38
add a comment |
If you go to the scaladoc api of cats-effects, and search for Parallel instances, it lists you just a single implicit method that produces Parallel[IO, ???], namely Parallel[IO, Par] provided by cats.effect.IO.ioParallel. So, it seems that cats.effect.IO.Par should do the trick:
List(1, 2, 3).parTraverse[IO, Par, String](x => IO.pure(x.toString))
answered Nov 13 '18 at 2:41
Andrey Tyukin
26.8k42348
If you go to the scaladoc api of cats-effects, and search for Parallel instances, it lists you just a single implicit method that produces Parallel[IO, ???], namely Parallel[IO, Par] provided by cats.effect.IO.ioParallel. So, it seems that cats.effect.IO.Par should do the trick:
List(1, 2, 3).parTraverse[IO, Par, String](x => IO.pure(x.toString))
answered Nov 13 '18 at 2:41
Andrey Tyukin
26.8k42348
answered Nov 13 '18 at 2:41
Andrey Tyukin
26.8k42348
answered Nov 13 '18 at 2:41
Andrey Tyukin
26.8k42348
answered Nov 13 '18 at 2:41
Andrey Tyukin
26.8k42348
26.8k42348
1
You're the best, man, seriously thanks
– Lasf
Nov 13 '18 at 3:38
add a comment |
1
You're the best, man, seriously thanks
– Lasf
Nov 13 '18 at 3:38
1
1
You're the best, man, seriously thanks
– Lasf
Nov 13 '18 at 3:38
You're the best, man, seriously thanks
– Lasf
Nov 13 '18 at 3:38
add a comment |
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