Gaurav2728

Print-friendly Assignment

Instructions:

• Use gitlab private repositories for code and add https://gitlab.com/manu_j as collaborator. Email manu@printfriendly.com once finished.
• You can use a webhook testing platform instead of slack but it should follow the slack webhook payload format.

Coding Challenge:

Create a ruby web application, which accepts webhook requests from github.

Gaurav2728

This is a fork of original gist https://gist.github.com/nrollr/3f57fc15ded7dddddcc4e82fe137b58e, with slight changes on pointing to 5.7 version branch, instead of 8 (latest default of MySQL in Hombrew).

Install MySQL 5.7 on macOS

This procedure explains how to install MySQL using Homebrew on macOS (Sierra 10.12 and up)

Install Homebrew

• Installing Homebrew is effortless, open Terminal and enter :
  $ /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
• Note: Homebrew will download and install Command Line Tools for Xcode 8.0 as part of the installation process.

Gaurav2728

Keybase proof

I hereby claim:

• I am gaurav2728 on github.
• I am gaurav2728 (https://keybase.io/gaurav2728) on keybase.
• I have a public key ASBBEQN2hrMTS5LRF_x76wLLJPALDOW5Bh6cRjtPM4hgXQo

To claim this, I am signing this object:

Gaurav2728

# Assumes:
#   - curl is installed
#   - you have a slack channel with an incoming webhook configured

require 'json'

def notify_slack(webhook_url, channel, username, text, image)
  payload = {
    :channel  => channel,
    :username => username,

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mike@rbci:~$ psql -U postgres
psql (9.0.3)
Type "help" for help.

postgres=# update pg_database set datallowconn = TRUE where datname = 'template0';
UPDATE 1
postgres=# \c template0
You are now connected to database "template0".
template0=# update pg_database set datistemplate = FALSE where datname = 'template1';
UPDATE 1

Gaurav2728

Typing vagrant from the command line will display a list of all available commands.

Be sure that you are in the same directory as the Vagrantfile when running these commands!

Creating a VM

• vagrant init -- Initialize Vagrant with a Vagrantfile and ./.vagrant directory, using no specified base image. Before you can do vagrant up, you'll need to specify a base image in the Vagrantfile.
• vagrant init <boxpath> -- Initialize Vagrant with a specific box. To find a box, go to the public Vagrant box catalog. When you find one you like, just replace it's name with boxpath. For example, vagrant init ubuntu/trusty64.

Starting a VM

• vagrant up -- starts vagrant environment (also provisions only on the FIRST vagrant up)

Gaurav2728

Let's Encrypt with Nginx

Here's how I set up a tiny Nginx/Rails server that uses HTTPS via a Let's Encrypt issued certificate.

https://letsencrypt.paddd.de/

Server

I use the smallest DigitalOcean droplet (512 MB) here, which is built from the "Ubuntu Ruby on Rails on 14.04" image provided by them.

Gaurav2728

Resources for Machine Learning in Ruby

Gems

• liblinear-ruby: Ruby interface to LIBLINEAR using SWIG

• classifier-reborn: Bayesian and LSI classification
  dependencies: GSL

Gaurav2728

require 'test_helper'

class RedemptionCodeTest < ActiveSupport::TestCase

  def setup
    @business = businesses :vinovolo
    @business.enabled_reward_back = true
    @user = users :warren
    @user.punchh_app = punchh_apps :vinovolo
  end

Gaurav2728

struct Vdbe {
  sqlite3 *db;            /* The database connection that owns this statement */
  Op *aOp;                /* Space to hold the virtual machine's program */
  Mem *aMem;              /* The memory locations */
  Mem **apArg;            /* Arguments to currently executing user function */
  Mem *aColName;          /* Column names to return */
  Mem *pResultSet;        /* Pointer to an array of results */
  int nMem;               /* Number of memory locations currently allocated */
  int nOp;                /* Number of instructions in the program */
  VdbeCursor **apCsr;     /* One element of this array for each open cursor */