vikashvikram

# Vikram March 28, 2018
# Based on video on elixir by Derek
# commands to run: iex, c("elix_tut.ex"), M.main
defmodule M do
  def main do
    # string_stuff()
    # math_stuff()
    # compare_stuff()
    # decision_stuff()
    # tuple_stuff()

vikashvikram

#user  nobody;
worker_processes  8;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid        logs/nginx.pid;

vikashvikram

Setting up nginx with passenger for a Ruby on Rails app on Mac OSX

Nginx with passenger is a very popular choice for production and staging environment for rails applications. It is always a good practice to replicate the production and staging environments on our local systems so that we do not have last minute surprises while deploying. Most of the Ruby on Rails developers use Mac OS as their development environment so this document is regarding setting up Nginx with on it for an already existing rails app. The assumption for this doc is that you do not even have ruby installed on your system. So feel free to skip the steps that are not relevant.

Installing Ruby, setting up Rails app, installing gems and nginx

The recommended way to work on a rails app is to use rvm for installing ruby. We need to have multiple versions of ruby and our gems

vikashvikram

# get the sample rails app
# git clone https://github.com/vikashvikram/neo4jrails.git

# in case you are using neo4j with rails app, run follwoing commands to setup
rake neo4j:install[community-latest]

# to start a neo4j server from rails app
rake neo4j:start[development]

# start neo4j shell from a rails app

vikashvikram

# FrankensteinHash is a subclass of Hash
# It lets you create many levels of keys in Hash at one go.
class FrankensteinHash < Hash
  def [](key)
    fetch(key) {|el| self[el] = FrankensteinHash.new}
  end
end

h = FrankensteinHash.new
h["a"]["b"]["c"] = 1 #=> 1

vikashvikram

//: Playground - noun: a place where people can play

import UIKit

var constantString = "Hi"

var str: String? = "Hello, playground"

//str = nil

vikashvikram

var isDone: boolean = false;

//As in JavaScript, all numbers in TypeScript are floating point values.
var height: number = 6;

console.log('isDone: ', isDone);
console.log('height: ', height)

var name: string = "bob";
name = 'smith';

vikashvikram

package main

import (
  "fmt"
  "strconv"
  )

  func Join(arr []int64, str string) string {
    result := ""
    last_index := len(arr) - 1

vikashvikram

package main

import (
  "fmt"
  )

  func GetAllSubsets(arr []int64, size int) [][]int64{
    if len(arr) == size {
      result := [][]int64{arr}
      return result

vikashvikram

package main

import (
  "fmt"
  "bytes"
  )

  func AddOneToEachElement(slice []int) {
    for i := range slice {
      slice[i]++