Skip to content

Instantly share code, notes, and snippets.

nafg / SlickMigration.scala
Created October 2, 2022 16:07
View SlickMigration.scala
import scala.concurrent.duration.Duration
import scala.concurrent.{Await, ExecutionContext}
import slick.dbio.DBIO
import org.flywaydb.core.api.migration.{BaseJavaMigration, Context}
abstract class SlickMigration extends BaseJavaMigration {
implicit val executionContext: ExecutionContext =
View GenerateBeanCaseClass.scala
import java.beans.Introspector
import java.nio.file.{Files, Paths}
object GenerateBeanCaseClass extends App {
val typeRenderings = Map[Class[_], String](
classOf[String] -> "String",
classOf[Boolean] -> "Boolean",
classOf[Int] -> "Int"
View PartialState.scala
package chesednow.requests.sjs
import japgolly.scalajs.react.Callback
import japgolly.scalajs.react.vdom.VdomNode
import cats.implicits._
import monocle.{Iso, Prism}
trait PartialStateBase[V] {
type State
nafg / SlickMetaGenPlugin.scala
Last active August 17, 2020 21:59
Simple code generator for Slick using Scalameta rather than strings, as an SBT plugin
View SlickMetaGenPlugin.scala
import java.sql.Types
import scala.annotation.tailrec
import scala.concurrent.Await
import scala.concurrent.duration.Duration
import scala.meta._
import slick.dbio.DBIO
import slick.jdbc.meta.{MColumn, MQName, MTable}
View gist:2d37164b0b5501b417a6002dcaab4303
[1/547] mill.scalalib.ZincWorkerModule.compilerInterfaceClasspath
[2/547] mill.scalalib.ZincWorkerModule.classpath
[4/547] shared_common.js.upstreamCompileOutput
[5/547] shared_common.js.sources
[6/547] shared_common.js.generatedSources
nafg / paramCodec.scala
Last active March 10, 2020 10:55
Deriving circe with Magnolia but only as a fallback
View paramCodec.scala
import scala.language.experimental.macros
import scala.reflect.ClassTag
import io.circe.{Decoder, Encoder, Json}
import magnolia._
class ParamEncoder[T](val underlying: Encoder[T]) extends AnyVal
trait ParamEncoderLowPriority {
type Typeclass[T] = ParamEncoder[T]
nafg / gen-instructions.sbt
Last active April 1, 2020 15:19
Auto-generate your library's install instructions in README
View gen-instructions.sbt
val generateInstallInstructions = taskKey[Unit]("Generate install instructions in")
generateInstallInstructions := {
val info = Def.task((projectID.value, description.value, (publish / skip).value)).all(ScopeFilter(inAnyProject)).value
val lines =
for ((moduleId, descr, noPublish) <- info.sortBy( if !noPublish) yield {
"// " + descr + "\n" +
s"""libraryDependencies += "${moduleId.organization}" %%% "${}" % "${moduleId.revision}""""
nafg /
Last active December 2, 2019 23:02
import scala.util.{Failure, Success}
import $ivy.`io.circe::circe-core:0.12.3`
import $ivy.`io.circe::circe-generic:0.12.3`
import $ivy.`io.circe::circe-parser:0.12.3`
import io.circe.{Decoder, Encoder}
import io.circe.syntax._
import io.circe.parser
import requests.BaseSession
nafg / some.scala
Last active September 9, 2019 14:21 — forked from suni-masuno/some.scala
View some.scala
class SomeClass {
private def get(url: String): Future[Option[String]] =
for {
serviceResponse <- sendGetRequest(url)
} yield maybeBody(url, serviceResponse)
private def maybeBody(url: String, response: HttpResponse[String]): String =
if (response.is2xx) Some(response.body)
else None