Luis Medina lu4nm3
lu4nm3
/ kubernetes-master-aws-iam-policy.json
Created
January 27, 2016 17:08
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| { | |
| "Version": "2012-10-17", | |
| "Statement": [ | |
| { | |
| "Action": "autoscaling:Describe*", | |
| "Effect": "Allow", | |
| "Resource": "*" | |
| }, | |
| { | |
| "Action": "ec2:*", |
lu4nm3
/ esnext_webpack_npm_start_output
Created
December 30, 2016 19:35
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| > [email protected] start /home/escala | |
| > npm run server:dev | |
| > [email protected] server:dev /home/escala | |
| > cross-env NODE_ENV=development npm run webpack-dev-server -- --inline --progress --profile --watch | |
| > [email protected] webpack-dev-server /home/escala | |
| > cross-env BABEL_ENV=node ./node_modules/.bin/webpack-dev-server "--inline" "--progress" "--profile" "--watch" |
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| use futures::StreamExt; | |
| use std::error::Error; | |
| use tokio; | |
| use tokio::macros::support::Pin; | |
| use tokio::prelude::*; | |
| use tokio::time::{Duration, Instant}; | |
| pub fn main() -> Result<(), Box<dyn std::error::Error>> { | |
| let mut multi_threaded_runtime = tokio::runtime::Builder::new() | |
| .threaded_scheduler() |
lu4nm3
/ ex1_mvm.scala
Last active
May 14, 2020 01:07
ex1 - https://medium.com/@lu4nm3/monad-transformers-vs-mtl-d3a1167e2649
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| type IOEither[A] = EitherT[IO, String, A] | |
| type IOEitherOption[A] = OptionT[IOEither, A] |
lu4nm3
/ ex2_mvm.scala
Last active
May 14, 2020 01:26
ex2 - https://medium.com/@lu4nm3/monad-transformers-vs-mtl-d3a1167e2649
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| val getJobStatus: Config => IO[Status] = ??? | |
| def sendAlert(status: Status): Config => IO[Unit] = ??? | |
| // ReaderT[F[_], E, A] is a type alias of Kleisli[F, E, A] so we can use the Kleisli constructor to wrap our functions | |
| val getJobStatusR: ReaderT[IO, Config, Status] = Kleisli(getJobStatus) | |
| def sendAlertR(status: Status): ReaderT[IO, Config, Unit] = Kleisli(sendEmail(status)) | |
| val program: ReaderT[IO, Config, Unit] = for { | |
| status <- getJobStatusR | |
| _ <- sendAlertR(status, user) |
lu4nm3
/ ex3_mvm.scala
Last active
May 14, 2020 01:26
ex3 - https://medium.com/@lu4nm3/monad-transformers-vs-mtl-d3a1167e2649
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| trait MonadReader[F[_], E] { | |
| val monad: Monad[F] | |
| def ask: F[E] | |
| def reader[A](f: E => F[A]): F[A] | |
| } |
lu4nm3
/ ex4_mvm.scala
Last active
May 14, 2020 01:26
ex4 - https://medium.com/@lu4nm3/monad-transformers-vs-mtl-d3a1167e2649
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| def createMonadReader[E](value: E): IO[MonadReader[IO, E]] = { | |
| for { | |
| input <- Ref.of[IO, E](value) | |
| } yield new MonadReader[IO, E] { | |
| val monad: Monad[IO] = Monad[IO] | |
| def ask: IO[E] = input.get | |
| def reader[A](f: E => IO[A]): IO[A] = ask.flatMap(f) | |
| } | |
| } |
lu4nm3
/ ex5_mvm.scala
Last active
May 14, 2020 02:06
ex5 - https://medium.com/@lu4nm3/monad-transformers-vs-mtl-d3a1167e2649
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| def program(R: MonadReader[IO, Config]): IO[Unit] = { | |
| for { | |
| status <- R.reader(getJobStatus) | |
| _ <- R.reader(sendAlert(status)) | |
| } yield () | |
| } |
lu4nm3
/ ex6_mvm.scala
Last active
May 14, 2020 02:06
ex6 - https://medium.com/@lu4nm3/monad-transformers-vs-mtl-d3a1167e2649
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| sealed trait Status | |
| case object Healthy extends Status | |
| case object Degraded extends Status | |
| case object Unavailable extends Status | |
| case class Env(serverUrl: String) | |
| case class SystemState(value: Map[Env, Status]) | |
| def getServerStatus[F[_]](): Env => F[Status] = ??? | |
| def alertAdmin[F[_]](status: Status): Env => F[Unit] = ??? |
lu4nm3
/ ex7_mvm.scala
Last active
May 14, 2020 02:06
ex7 - https://medium.com/@lu4nm3/monad-transformers-vs-mtl-d3a1167e2649
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| final class IndexedReaderWriterStateT[F[_], E, L, SA, SB, A](val runF: F[(E, SA) => F[(L, SB, A)]]) { | |
| def map[B](f: A => B)(implicit F: Functor[F]): IndexedReaderWriterStateT[F, E, L, SA, SB, B] = { | |
| transform { (l, s, a) => (l, s, f(a)) } | |
| } | |
| def transform[LL, SC, B](f: (L, SB, A) => (LL, SC, B)) | |
| (implicit F: Functor[F]): IndexedReaderWriterStateT[F, E, LL, SA, SC, B] = { | |
| IndexedReaderWriterStateT.applyF { | |
| F.map(runF) { rwsfa => |
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