slimsag

Because cross-compiling binaries for Windows is easier than building natively

I want Microsoft to do better, want Windows to be a decent development platform-and yet, I constantly see Microsoft playing the open source game: advertising how open-source and developer friendly they are - only to crush developers under the heel of the corporate behemoth's boot.

The people who work at Microsoft are amazing, kind, talented individuals. This is aimed at the company's leadership, who I feel has on many occassions crushed myself and other developers under. It's a plea for help.

The source of truth for the 'open source' C#, C++, Rust, and other Windows SDKs is proprietary

You probably haven't heard of it before, but if you've ever used win32 API bindings in C#, C++, Rust, or other languages, odds are they were generated from a repository called microsoft/win32metadata.

stewSquared

val steps =
  io.Source.fromResource("2021/day-22-1.txt").getLines.toList.collect {
    case s"$step x=${Range(xs)},y=${Range(ys)},z=${Range(zs)}" =>
      Step(step == "on", Area(xs, ys, zs))
  }

case class Step(on: Boolean, area: Area):
  def countLastTouched(future: List[Step]): Long =
    val overlaps = future.flatMap(_.area.intersect(area))
    val touchedLater = Area.unionSize(overlaps)

stewSquared

val input = io.Source.fromResource("2021/day-17-1.txt").getLines.next()

case class Point(x: Int, y: Int)

object Point:
  opaque type Position <: Point = Point
  opaque type Velocity <: Point = Point
  opaque type Origin <: Position = Position

  def Position(x: Int, y: Int): Position = Point(x, y)

shipilev

1. Generate the file:

$ awk 'BEGIN { for(c=0;c<10000000;c++) printf "<p>LOL</p>" }' > 100M.html
$ (for I in `seq 1 100`; do cat 100M.html; done) | pv | gzip -9 > 10G.boomgz

2. Check it is indeed good:

KATT

Record<string, x | undefined>

Represent maps

// rather than 
const map: {[ key: string ]: string} = {
  foo: 'bar',
}

laughinghan

• any: magic, ill-behaved type that acts like a combination of never (the proper [bottom type]) and unknown (the proper [top type])
  • Anything except never is assignable to any, and any is assignable to anything at all.
  • Identities: any & AnyTypeExpression = any, any | AnyTypeExpression = any
  • Key TypeScript feature that allows for [gradual typing].
• unknown: proper, well-behaved [top type]
  • Anything at all is assignable to unknown. unknown is only assignable to itself (unknown) and any.
  • Identities: unknown & AnyTypeExpression = AnyTypeExpression, unknown | AnyTypeExpression = unknown

• Prefer over any whenever possible. Anywhere in well-typed code you're tempted to use any, you probably want unknown.

japgolly

scalafix

addSbtPlugin("ch.epfl.scala" % "sbt-scalafix" % "0.9.13")

import scalafix.sbt.ScalafixPlugin.autoImport.{scalafixDependencies, scalafixSemanticdb}

scalafixDependencies in ThisBuild += "org.scala-lang.modules" %% "scala-collection-migrations" % "2.1.4",

zyuiop

import java.util.Date

import org.jsoup.Jsoup
import org.jsoup.nodes.Document

import scala.collection.mutable
import scala.io.{AnsiColor, Source}

/**
  * @author Louis Vialar

andywer

React - Functional error boundaries

Thanks to React hooks you have now happily turned all your classes into functional components.

Wait, all your components? Not quite. There is one thing that can still only be implemented using classes: Error boundaries.

There is just no functional equivalent for componentDidCatch and deriveStateFromError yet.

Proposed solution

sualeh

# ========================================================================
# Example of how to extend the SchemaCrawler Docker image. See
# https://github.com/schemacrawler/SchemaCrawler-Docker
# for instructions on how to use.
# ========================================================================

FROM schemacrawler/schemacrawler

USER schcrwlr
WORKDIR /home/schcrwlr