bishabosha’s gists

bishabosha / FlagMirror.scala

Created June 1, 2022 09:28

A Bitfield implementation intended for use with type class derivation on Scala enums

	package tastyquery.util

	import compiletime.constValue
	import compiletime.error
	import compiletime.summonAll

	sealed abstract class FlagMirror[A <: reflect.Enum]():
	outer =>

	opaque type FlagSet = Long

bishabosha / BashScriptTests.out

Created May 19, 2022 18:03

output from on macOS dotty.tools.scripting.BashScriptTests

	sbt:scala3> dist/pack
	... truncated
	sbt:scala3> scala3-bootstrapped/testOnly dotty.tools.scripting.BashScriptsTests
	[info] Passed: Total 0, Failed 0, Errors 0, Passed 0
	[info] No tests to run for scala3-interfaces / Test / testOnly
	[info] Passed: Total 0, Failed 0, Errors 0, Passed 0
	[info] No tests to run for scala3-sbt-bridge / Test / testOnly
	[info] Passed: Total 0, Failed 0, Errors 0, Passed 0
	[info] No tests to run for scala3-library-bootstrapped / Test / testOnly
	[info] Passed: Total 0, Failed 0, Errors 0, Passed 0

bishabosha / derived-plugins.scala

Created May 9, 2022 20:41

Showing how the type class derivation mechanism can be used to add methods to the companion object with low boilerplate from the client side

	trait Plugin:

	type Companion

	val exports: Companion

	object Plugin:
	transparent inline def exports[P <: Plugin](using plugin: P): plugin.exports.type = plugin.exports

	trait Hashable[-T] extends Plugin:

bishabosha / example.scala

Last active February 18, 2022 12:45

ISO Continents and Countries, with lookup

	@main def addContinents(path: String): Unit =
	val lines = scala.io.Source.fromFile(path).getLines
	for case s"$country, $visitors" <- lines.drop(1) do
	continentFromCountry(country) match
	case Some(continent) =>
	println(s"${continent.name}, $country, $visitors")
	case None =>
	Console.err.println(
	"[error] no continent found for country: " + country
	)

bishabosha / ordinalOf.scala

Created January 28, 2022 09:51

Statically get the ordinal of any child of a sum-type in Scala

	import scala.compiletime.ops.int.S
	import scala.compiletime.constValue
	import scala.deriving.Mirror

	object Tuples {
	type IndexOf[Q, T <: Tuple, I <: Int] <: Int = T match {
	case EmptyTuple => -1
	case Q *: ts => I
	case _ *: ts => IndexOf[Q, ts, S[I]]
	}

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 =

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 / 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 / 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 / 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" : {

Jamie Thompson bishabosha