zacharycarter

Binding to C Libraries with Nim

---

Table of Contents

• Introduction
• C2Nim
• The C Preprocessor
• Pragmas

ellerbrock

Free O'Reilly books and convenient script to just download them.

Thanks /u/FallenAege/ and /u/ShPavel/ from this Reddit post

How to use:

1. Take the download.sh file and put it into a directory where you want the files to be saved.
2. cd into the directory and make sure that it has executable permissions (chmod +x download.sh should do it)
3. Run ./download.sh and wee there it goes. Also if you do not want all the files, just simply comment the ones you do not want.

vlasky

//JavaScript implementation of winding number algorithm to determine whether a point is inside a polygon
//Based on C++ implementation of wn_PnPoly() published on http://geomalgorithms.com/a03-_inclusion.html

function pointInPolygon(point, vs) {
  const x = point[0], y = point[1];
  let wn = 0;

  for (let i = 0, j = vs.length - 1; i < vs.length; j = i++) {
    let xi = vs[i][0], yi = vs[i][1];
    let xj = vs[j][0], yj = vs[j][1];

iximiuz

const http = require('http');

const log = console.log;
console.log = (...args) => {
  log.apply(console, [new Date().toISOString()].concat(args));
};

const port = process.argv[2];
const server = http.createServer((req, res) => {
  console.log('Incoming request');

fnky

ANSI Escape Sequences

Standard escape codes are prefixed with Escape:

• Ctrl-Key: ^[
• Octal: \033
• Unicode: \u001b
• Hexadecimal: \x1B
• Decimal: 27

David-Lor

#!/bin/bash

# This script subscribes to a MQTT topic using mosquitto_sub.
# On each message received, you can execute whatever you want.

while true  # Keep an infinite loop to reconnect when connection lost/broker unavailable
do
    mosquitto_sub -h "127.0.0.1" -t "test" | while read -r payload
    do
        # Here is the callback to execute whenever you receive a message:

niw

Vagrant.configure("2") do |config|
  config.vm.box = "ubuntu/bionic64"

  config.vm.provider :virtualbox do |v|
    v.gui = true
    v.memory = 2048
  end

  # Currently "ubuntu/bionic64" on VirtualBox requires `type: "virtualbox"`
  # to make synced folder works.

alfajrimutawadhi

package main

import (
	"fmt"
	"log"
	"os"

	"github.com/pkg/sftp"
	"golang.org/x/crypto/ssh"
	kh "golang.org/x/crypto/ssh/knownhosts"