emmanuelnk

void lcd2LineDisplay(String UpString, String DownString, int delaytime) {
	//LiquidCrystal_I2C lcd(0x27, 16, 2); //Create a new LiquidCrystal_I2C object if one hasn't been globally created
	//lcd.backlight(); //Turn on backlight everytime the function runs
	lcd.clear();
	delay(500);
	lcd.setCursor(0, 0);
	lcd.print(UpString);
	lcd.setCursor(0, 1);
	lcd.print(DownString);

emmanuelnk

Whether you're trying to give back to the open source community or collaborating on your own projects, knowing how to properly fork and generate pull requests is essential. Unfortunately, it's quite easy to make mistakes or not know what you should do when you're initially learning the process. I know that I certainly had considerable initial trouble with it, and I found a lot of the information on GitHub and around the internet to be rather piecemeal and incomplete - part of the process described here, another there, common hangups in a different place, and so on.

In an attempt to coallate this information for myself and others, this short tutorial is what I've found to be fairly standard procedure for creating a fork, doing your work, issuing a pull request, and merging that pull request back into the original project.

Creating a Fork

Just head over to the GitHub page and click the "Fork" button. It's just that simple. Once you've done that, you can use your favorite git client to clone your repo or j

emmanuelnk

Useful Git commands

This is just stuff that I have put down that I find I use a lot of the time for my own reference.

Latest changes from repo to your machine

$ git pull

emmanuelnk

# first install npx (https://github.com/zkat/npx)

npm install -g npx

# set your npm defaults if you havent already

npm set init.author.name "Your name"
npm set init.author.email "your@email.com"
npm set init.author.url "https://your-url.com"
npm set init.license "MIT"

emmanuelnk

// TL,DR :
// here is a wrapper for PromiseAll that handles rejection and avoids fast fail behavior
const softPromiseAll = arr => {
  return Promise.all(arr.map(
    promise => new Promise(
      resolve => promise.then(resolve).catch(resolve)
    )
  )).then(results => results)
}

emmanuelnk

git branch --merged master | grep -v "\master" | xargs -n 1 git branch -d

emmanuelnk

const fizzbuzz = (min, max) => new Array(max-min+1)
	.fill(0)
	.map((f,i) => console.log(`${((i+1)%3 === 0) ? 'fizz' : ''}${((i+1)%5 === 0) ? 'buzz' : ''}` || i+1))

fizzbuzz(1, 100)

emmanuelnk

// great for fixtures used in tests that need to stay up to date 

// needs moment.js
const moment = require('moment')

const updateTimestamps = (entity, baseTimestamp, path = '', tsFields) => {
  // usage: recusrively updates all Timestamps in a json fixture for tests
  const nowTs = moment().clone().startOf('hour')
  const diff = Math.abs(nowTs.diff(baseTimestamp, 'hours'))

emmanuelnk

# ./my_script.sh --arg1 value1 --arg2 value2 --arg3 value3
# ./my_script.sh -a value1 -b value2 -c value3

#!/usr/bin/env bash
while [[ "$#" -gt 0 ]]; do case $1 in
  -a|--arg1) var1="$2"; shift;;
  -b|--arg2) var2="$2"; shift;;
  -c|--arg3) var3="$2"; shift;;
  *) echo "Unknown parameter passed: $1"; exit 1;;
esac; shift; done

emmanuelnk

# Export the vars in .env into your shell:
export $(egrep -v '^#' .env | xargs)