Toby Hobson thobson
thobson
/ example.ts
Created
June 16, 2023 15:26
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| import { Entity } from "electrodb"; | |
| import { client, table } from "../client"; | |
| export const UserEntity = new Entity( | |
| { | |
| model: { | |
| version: "1", | |
| entity: "user", | |
| service: "default", | |
| }, |
thobson
/ home-brew error
Last active
February 5, 2021 15:48
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| # Error | |
| ➜ ~ brew upgrade | |
| Updating Homebrew... | |
| ==> Auto-updated Homebrew! | |
| Updated Homebrew from e98a91378 to 4c8fe984c. | |
| Updated 2 taps (homebrew/core and homebrew/cask). | |
| ==> New Formulae | |
| dasel | |
| Error: undefined method `ohai_stdout_or_stderr' for #<ReporterHub:0x00007fd88a968308> | |
| Please report this issue: |
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| package com.example | |
| import java.text.NumberFormat | |
| import java.time.Instant | |
| import cats.effect.{IO, Sync, Timer} | |
| import fs2.{Chunk, Stream} | |
| import monix.eval.Task | |
| import monix.execution.Scheduler | |
| import monix.reactive.Observable |
thobson
/ cats-mutable-state.scala
Created
December 4, 2019 09:53
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| class TableManager[F[_]](guard: Semaphore[F],)(implicit F: Sync[F], TableOps: TableOps[F]) { | |
| // this feels hacky | |
| private val state = mutable.Map.empty[String, Table] | |
| def tableFor(name: String, createIfMissing: Boolean): F[Table] = guard.withPermit { | |
| state.get(name) match { | |
| case Some(table) => table.pure[F] | |
| case None => for { | |
| newTable <- TableOps.open(buildPath(name), createIfMissing) |
thobson
/ typeclass-library-extension.scala
Created
October 24, 2017 18:36
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| implicit val vehicleLikeTank = new VehicleLike[Tank] { | |
| def drive: String = "driving a big big tank" | |
| } | |
| val tank = Tank(...) | |
| val drivenTank: Tank = Dealership.driveAndReturn(tank) |
thobson
/ typeclass-library-usage.scala
Created
October 24, 2017 18:36
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| import Vehicles._ // import car and bus implementations | |
| val ford = Car("ford") | |
| Dealership.driveAndReturn(ford) // vehicleLikeCar is already in scope due to the import |
thobson
/ typeclass-library-usage.scala
Created
October 24, 2017 18:35
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| trait VehicleLike[A] { | |
| def drive(a: A): String | |
| } | |
| object Vehicles { | |
| implicit val vehicleLikeCar = ... | |
| implicit val vehicleLikeBus = ... | |
| } | |
| object Dealership { |
thobson
/ passback.scala
Created
October 24, 2017 18:28
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| val ford: Car = Car("ford") | |
| // still a Car | |
| val drivenFord: Car = driveAndReturn(ford) |
thobson
/ implicit-vehiclelike.scala
Created
October 24, 2017 18:27
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| implicit val vehicleLikeCar = ... | |
| implicit val vehicleLikeBus = ... | |
| def driveAndReturn[A](vehicle: A)(implicit vehicleLike: VehicleLike[A]): A = { | |
| println(vehicleLike.drive(vehicle)); vehicle | |
| } |
thobson
/ vehiclelike-usage.scala
Created
October 24, 2017 18:27
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| val ford = Car("ford") | |
| val londonBus = Bus("red") | |
| println(vehicleLikeCar.drive(ford)) | |
| println(vehicleLikeBus.drive(londonBus)) |
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