amolpujari

require "sinatra"
require "oauth2"

DB = {
  site: "http://api.local.com:3000/",
  redirect_uri: "http://oauth2client:1758/callback"
}

get "/" do
  DB[:uid] = params[:uid]

amolpujari

amol_termsheet|fast!$ rf | grep Completed
Spring is not running
20:09:45 web.1       | Completed 200 OK in 5593ms (Views: 2031.4ms | ActiveRecord: 338.0ms)
20:09:50 web.1       | Completed 200 OK in 657ms (Views: 636.6ms | ActiveRecord: 7.4ms)
20:09:58 web.1       | Completed 200 OK in 604ms (Views: 579.4ms | ActiveRecord: 7.9ms)
20:10:08 web.1       | Completed 200 OK in 639ms (Views: 616.0ms | ActiveRecord: 9.8ms)
20:10:11 web.1       | Completed 200 OK in 657ms (Views: 635.3ms | ActiveRecord: 8.5ms)
20:10:17 web.1       | Completed 200 OK in 754ms (Views: 727.1ms | ActiveRecord: 7.7ms)
20:10:19 web.1       | Completed 200 OK in 680ms (Views: 655.1ms | ActiveRecord: 8.6ms)
20:10:20 web.1       | Completed 200 OK in 553ms (Views: 528.5ms | ActiveRecord: 8.5ms)

amolpujari

## Prepare ###################################################################

# Remove RVM
rvm implode

# Ensure your homebrew is working properly and up to date
brew doctor
brew update

## Install ###################################################################

amolpujari

### write your solution here

module M
  def method_m
    puts 'from m...'
  end
end

module N
  def method_n

amolpujari

In Ruby class variables are denoted by `@@`, and instance variables are denoted by `@`

Instance variables 
 - are private to the class instance, cannot be accessed outside class unless shared
 - they cannot be accessed outside class instance methods
 - they get inherited 

Class variables
 - are private to the class instance, cannot be accessed outside class unless shared
 - they cannot be accessed outside class instance methods

amolpujari

While attempting to explain JavaScript's reduce method on arrays, conceptually, I came up with the following - hopefully it's helpful; happy to tweak it if anyone has suggestions.

Intro

JavaScript Arrays have lots of built in methods on their prototype. Some of them mutate - ie, they change the underlying array in-place. Luckily, most of them do not - they instead return an entirely distinct array. Since arrays are conceptually a contiguous list of items, it helps code clarity and maintainability a lot to be able to operate on them in a "functional" way. (I'll also insist on referring to an array as a "list" - although in some languages, List is a native data type, in JS and this post, I'm referring to the concept. Everywhere I use the word "list" you can assume I'm talking about a JS Array) This means, to perform a single operation on the list as a whole ("atomically"), and to return a new list - thus making it much simpler to think about both the old list and the new one, what they contain, and

amolpujari

# This is a custom method to flatten any given array
# this is simple one to read and understand
# by name it means to accept only array, so it is known that passing any other object than array will fail 
def flatten_my_array arr
  new_arr = []
  
  arr.each do |element|
    if element.is_a? Array
      new_arr = new_arr.concat flatten_my_array(element)
      # know that Array#concat is faster way to concat two arrays in ruby

amolpujari

    if investment and investment.deal and investment.deal.annual_return.present?
      return investment.deal.annual_return.to_i
    end

    return 0 if projected_earnings.blank?
    return 0 if percent_profit.blank?
    return 0 if percent_profit.to_f < 1

    year_diff = projected_earnings.last.distribution_date.d_date.year.to_i - DateTime.now.year.to_i

amolpujari

module Liquid
  module Tags
    module SimpleCaptcha
      class HumanTest < ::Liquid::Tag
        include ::ActionView::Helpers::FormTagHelper
        include ::SimpleCaptcha::ViewHelper

        attr_accessor :request, :session

        def render(context)

amolpujari

# Elixir has pipes `|>`. Let's try to implement those in Ruby.
#
# I want to write this:
#
#   email.body | RemoveSignature | HighlightMentions | :html_safe
#
# instead of:
#
#   HighlightMentions.call(RemoveSignature.call(email.body)).html_safe
#