SunKing2

Reading a Firebase Firestore collection with JavaScript

Create file in current directory called index.js

Do yourself a favor, and instal Bun (a replacement for NodeJS) and run it with Bun

import { initializeApp } from "firebase/app";
import { getFirestore, collection, getDocs, addDoc } from 'firebase/firestore/lite';

SunKing2

asdf cheatsheet

Install Perl and set as current:

asdf plugin-add perl # gotta install for each language
asdf list-all perl  # show all available version #s
asdf install perl 5.38.0
asdf global perl 5.38.0 #(do this!!!, more info below)
asdf plugin list all | grep -i graal # see if there's a plugin for graalvm or graal or something like that

SunKing2

Gotchas in perl 7

Class:
  - you can't just initialize any field using a constructor.
      : it must have :param on it
      field $employee_number: param;
        

SunKing2

set -e
cat > prime.rs <<EOF
#[no_mangle]
pub extern "C" fn is_prime(n: u64) -> bool {
    if n <= 1 {
        return false;
    }
    // check if even
    if n % 2 == 0 {
        return n == 2;

SunKing2

package MyRealArray;
use Moose;
use namespace::autoclean;

has 'arr' => (
    is      => 'rw',
    isa     => 'ArrayRef',
    default => sub { [] },
);

SunKing2

# Sources:
# Mastering Object-Oriented Perl Programming (OOP): Unleashing the Power of OOP in Perl (YouTube, last 2 minutes!!!!)
# Docs for Moose::Meta::Attribute::Native::Trait::Array
#  probably at: https://metacpan.org/pod/Moose::Meta::Attribute::Native::Trait::Array

# GlobalStuff.pm in current directory
package GlobalStuff;
use Moose;

has 'name' => (is=>'ro' , isa=>'Str' , default=>'');

SunKing2

# We'll create Scramble::Game and test it.
# Adapted from book "Perl Medic"  (Chapter on Testing)
h2xs -AXn Scramble::Game
cd Scramble-Game
perl Makefile.PL
make test
mv t/Scramble-Game.t t/01_basics.t
sed -i '/t\/Scramble-Game.t/ d' MANIFEST  # remove .t file from MANIFEST
perl -0777 -i.original -pe 's/\A.*use strict/#\/usr\/bin\/perl\nuse strict/igsm' t/01_basics.t
perl -0777 -i.original -pe 's/^###.*$//igsm' t/01_basics.t

SunKing2

sudo apt-get install -y python3.6 python3-pip virtualenv mongodb
sudo systemctl start mongodb
virtualenv -p /usr/bin/python3.6 --distribute myproject
source myproject/bin/activate
pip install --upgrade pip
python -m pip install pymongo
pip install PyZen
cat > test_mongo.py <<EOL
import unittest
from pymongo import MongoClient

SunKing2

If this link doesn't work, go to next step:
https://github.com/jasmine/jasmine/releases
download latest version of standalone jasmine from that link or search Google for "standalone jasmine".

Follow this tutorial:
https://code.tutsplus.com/tutorials/testing-your-javascript-with-jasmine--net-21229

Here's my version of the code:
// src/convert.js
function Convert(iAmount, sUnitFrom) {

SunKing2

sudo apt-get install -y curl
curl -sL https://deb.nodesource.com/setup_7.x | sudo -E bash -
sudo apt-get update
sudo apt-get install -y nodejs
curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -
echo "deb https://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list
sudo apt-get update && sudo apt-get install -y yarn
yarn init -y
yarn add karma karma-jasmine karma-chrome-launcher jasmine-core 
sudo yarn global add karma-cli