Bunyod

object Entities {

  case class Review(txt: String, userId: Long, id: Long)
  case class User(name: String, id: Long)
  case class ReviewEvent(event: String, reviewId: Long)
  case class FullReview(r: Review, user: User, evts: Seq[ReviewEvent])
}

VictorTaelin

async/await is just the do-notation of the Promise monad

CertSimple just wrote a blog post arguing ES2017's async/await was the best thing to happen with JavaScript. I wholeheartedly agree.

In short, one of the (few?) good things about JavaScript used to be how well it handled asynchronous requests. This was mostly thanks to its Scheme-inherited implementation of functions and closures. That, though, was also one of its worst faults, because it led to the "callback hell", an seemingly unavoidable pattern that made highly asynchronous JS code almost unreadable. Many solutions attempted to solve that, but most failed. Promises almost did it, but failed too. Finally, async/await is here and, combined with Promises, it solves the problem for good. On this post, I'll explain why that is the case and trace a link between promises, async/await, the do-notation and monads.

First, let's illustrate the 3 styles by implementing

Programie

#! /usr/bin/env python3

# This script toggles the PulseAudio output sink of the currently active application (guessed by the currently active X window) between the given output sink and the default output sink.
# The output sink is passed as first argument to the script.
#
# Requirements:
#
# xdotool (on Ubuntu install via "sudo apt install xdotool")
# pulsectl ("sudo pip3 install pulsectl")

prefiks

#!/usr/bin/python3

from bluepy import btle
import sys

class DiscoLH(btle.DefaultDelegate):

    def __init__(self):
        self.devices = []
        btle.DefaultDelegate.__init__(self)

graninas

Haskeller Competency Matrix

See also List of materials about Software Design in Haskell

	Junior	Middle	Senior	Architect
Haskell level	Basic Haskell	Intermediate Haskell	Advanced Haskell	Language-agnostic
Haskell knowledge scope	Learn you a Haskell	Get programming with Haskell	Haskell in Depth	Knows several languages from different categories
	Get programming with Haskell	Haskell in Depth	Functional Design and Architecture
			[Other books on Software Engineering in Haskell](https://github.com/graninas/software-design-in-haskell#B

tsjnachos117

I find the ability to get my android devices' battery info on my desktops via cli to be extremely convenient. I used to be able to this with KDE Connect easily, but things have just changed. Since I can't find any documentation on how to do this, and since I just stumbled on the answer myself, I though I might share what I know here. Please note that in the examples below, I will be using {device-id} as a placeholder for the string that KDE Connect uses to identify to my devices.

That said, I used to be able to get my various devices' battery status through gdbus through the following:

    gdbus call --session --dest org.kde.kdeconnect --object-path /modules/kdeconnect/devices/{device-id} --method org.kde.kdeconnect.device.battery.charge

However on Arch, I now get the following error: Error: GDBus.Error:org.freedesktop.DBus.Error.UnknownInterface: No such interface 'org.kde.kdeconnect.device.battery' at object path '/modules/kdeconnect/devices/b04294f19e8767f5'. I don't get this message on Ubuntu 2

ryleu

This guide is completely irrelevant! You no longer need to follow anything here—doing so may actually harm performance rather than helping it. Please tell whoever linked you here that they need to maintain their own guide, if they want to help people set up newer versions of DXVK / etc.