Krzysztof-Cieslak

//Builder represeting only one entity in DSL

type Child1State = {SomeState : string}

type Child1Builder () =

    [<CustomOperation("set_state")>]
    member __.SetState (st, x) = {st with SomeState = x}

codeniko

Setup Raspbian Buster

I'm using debian 10 as my daily so these are *nix commands. Mac should work with these too but you're on your own if you're using Windows. Goal for me is to make a headless raspberry pi I can SSH into and connect to my network using Ethernet. You should be comfortable in command line if you choose to follow this guide.

1. Go to https://www.raspberrypi.org/downloads/raspbian and download Raspbian lite archive
2. unzip the image
3. Plug in sdcard. Run lsblk to see drives and mount points. Likely, the sdcard will show up in /dev/sda or /dev/sdb and may have some partitions like /dev/sda1 and /dev/sda2.
4. If partitions are mounted, unmount all of them. Ex: umount /dev/sda1 and umount /dev/sda2
5. Copy the raspbian image to the sdcard with sudo dd if=RASPBIAN_IMAGE_FILE.img of=/dev/sda bs=4M
6. Run sync to ensure the written contents are flushed
7. OPTIONAL: To start ssh server on boot, Unplug sdcard and reinsert to remount new partitions. You'll have two with raspbian.

mrange

[F#] Implementing Coroutines (async/await) using continuations

Coroutines or async/await is not a new concept as it was named in 1958 by Melvin Conway. Coroutines had support in languages such as Simula(1962), Smalltalk(1972) and Modula-2(1978) but I think one can argue that coroutines came into mainstream with C# 5(2012) when Microsoft added async/await to C#.

The problem with subroutines

A thread can only execute a single subroutine at a time as a subroutine starts and then runs to completion. In a server environment subroutines can be problematic as in order to service connections concurrently we would usually would start a thread per connection, this was the idiom a few years ago. A thread depending on the operating system and settings needs about 1 MiB of user stack space meaning 1,024 threads needs 1 GiB of for just user stack space. In addition there's the cost of kernel stack space, book-keeping and scheduling of threads. This drives cost of VM/hardwa

-

source /etc/bash_completion.d/git-prompt
GIT_PS1_SHOWCOLORHINTS=true
GIT_PS1_SHOWDIRTYSTATE=true
PROMPT_COMMAND='__git_ps1 "${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w" "\$\[\033[00m\] "'

teamaton

Remove-ItemProperty -Path HKLM:\Software\Microsoft\Fusion -Name ForceLog
Remove-ItemProperty -Path HKLM:\Software\Microsoft\Fusion -Name LogFailures
Remove-ItemProperty -Path HKLM:\Software\Microsoft\Fusion -Name LogResourceBinds
Remove-ItemProperty -Path HKLM:\Software\Microsoft\Fusion -Name LogPath

drmohundro

<#
.Synopsis

Returns the install .NET Framework versions.

.Description

The script looks through the registry using the notes from the below
MSDN links to determine which versions of .NET are installed.

hsiboy

/*
                      d8888  .d8888b.  888b    888             
                     d88888 d88P  Y88b 8888b   888             
                    d88P888 888    888 88888b  888             
      .d8888b      d88P 888 888        888Y88b 888             
      88K         d88P  888 888        888 Y88b888             
      "Y8888b.   d88P   888 888    888 888  Y88888             
           X88  d8888888888 Y88b  d88P 888   Y8888             
       88888P' d88P     888  "Y8888P"  888    Y888             
                                                               

isaacabraham

namespace Newtonsoft.Json.Converters

open Microsoft.FSharp.Reflection
open Newtonsoft.Json
open System

type IdiomaticDuConverter() = 
    inherit JsonConverter()
    
    [<Literal>]

MarkRobertJohnson

#requires -version 2.0
Add-Type @"
public class Shift {
   public static int   Right(int x,   int count) { return x >> count; }
   public static uint  Right(uint x,  int count) { return x >> count; }
   public static long  Right(long x,  int count) { return x >> count; }
   public static ulong Right(ulong x, int count) { return x >> count; }
   public static int    Left(int x,   int count) { return x << count; }
   public static uint   Left(uint x,  int count) { return x << count; }
   public static long   Left(long x,  int count) { return x << count; }

erichexter

Set-ExecutionPolicy -ExecutionPolicy Unrestricted;$a=new-object net.webclient;$a.proxy.credentials=[system.net.credentialcache]::defaultnetworkcredentials;$a.downloadstring('http://bit.ly/OKgXHP')|iex