Jamie Thompson bishabosha

Language design ❤️

bishabosha / prettyPrint.scala

Last active April 16, 2019 23:49

Dotty tail recursive object pretty print - naive indentation

bishabosha / migrating-package-objects-with-extends.md

Created January 23, 2020 13:40

Migrating package objects with extends clauses

Here is a trait in package p

package p
trait Aliases { type Env = A with B }

In Scala 2, you could do this:

package object p extends Aliases

bishabosha / OpaqueTypeEntities.worksheet.sc

Created March 10, 2021 14:40

Demonstrate using Opaque Type Aliases as evidence parameters to abstract over different storage

	object Notarisation:

	private case object Proven

	opaque type Proof <: Singleton = Proven.type
	given Proof = Proven

	end Notarisation

	import Notarisation.Proof

bishabosha / summon-semigroup-Maybe.scala

Created November 15, 2021 15:20

Summon a Semigroup for Maybe, defined as an enum

	// using scala 3.1.0
	// using lib org.typelevel::cats-core:2.6.1

	package good

	import cats.Semigroup
	import cats.syntax.all.*

	enum Maybe[+A]:
	case Just(a: A)

bishabosha / summon-semigroup-maybe-oldway.scala

Created November 15, 2021 16:00

demonstration that the cats style of type class definition and syntax does not play well with type inference

	// using scala 3.1.0

	package mycats:

	trait Semigroup[A]:
	def combine(a1: A, a2: A): A

	class SemigroupOps[A](a1: A)(implicit ev: Semigroup[A]):
	def combine(a2: A): A = ev.combine(a1, a2)

bishabosha / bishabosha-setup-scala-channel.json

Last active May 5, 2022 19:46

Coursier Channel for Setting up Scala

	{
	"coursier": {
	"repositories": [
	"central"
	],
	"dependencies": [
	"io.get-coursier::coursier-cli:2.1.0-M2"
	]
	},
	"scala-cli" : {

bishabosha / aoc-2021-day22.scala

Last active July 12, 2022 10:49

Advent of Code 2021 Day 22 Neal Wu solution

	// using scala 3.0.2

	package day22


	import scala.util.Using
	import scala.io.Source

	import scala.collection.mutable

bishabosha / aoc-2021-day22-opt.scala

Created December 27, 2021 12:17

Scala Native Optimised Advent of Code 2022 Neal Wu Solution

	// using scala 3.0.2

	package day22Wu


	import scala.util.Using
	import scala.io.Source

	import scala.collection.mutable

bishabosha / tastyUtils.scala

Last active October 19, 2024 13:25

get version of any TASTy file

	//> using scala "3.5.2"
	//> using dep "com.lihaoyi::os-lib:0.11.2"
	//> using dep "com.lihaoyi::sourcecode:0.4.2"
	//> using dep "io.get-coursier:coursier_2.13:2.1.14"
	//> using buildInfo

	// setup with `scala --power setup-ide -with-compiler .`

	import scala.sys.process.*
	import java.nio.file.{Files, Paths, Path}

bishabosha / tastyOfCompiler.scala

Last active February 3, 2022 08:14

get tasty for any compiler version, run with scala-cli 0.1.0

	//> using lib "io.get-coursier:coursier_2.13:2.0.16"

	import scala.sys.process.*
	import java.nio.file.{Files, Paths, Path}
	import java.io.File.pathSeparator as cpSep
	import scala.annotation.threadUnsafe as tu
	import coursier.*

	/** Usage example: `scala-cli tastyOfCompiler.scala -- 3.1.1` */
	@main def printTastyVersion(compiler: String): Unit =