aherve

chess|1 1
chess|2 2
go|1    2
go|2    1

aherve

#!/usr/bin/env ruby
class Reducer
  attr_accessor :key, :game_type

  def initialize(key)
    @key = key
    @player_scores = Hash.new
  end

  def accumulate(splitted_line)

aherve

1 game_log  chess
1 player_log  1 1
1 player_log  2 0
2 game_log  go
2 player_log  1 2
2 player_log  2 5

aherve

1 player_log  1 1
2 player_log  1 2
1 player_log  2 0
2 player_log  2 5
1 game_log  chess
2 game_log  go

aherve

#!/usr/bin/env ruby

class Mapper

  # initialize a mapper with raw data.
  def initialize(line)
    # chomp will remove endline characters
    # split will split the line for every tab character \t
    # strip will remove whitespaces at begining and end of every words
    @data = line.chomp.split("\t").map(&:strip)

aherve

Player_id GameType AverageRank
1         chess    1
1         go       2
2         chess    2
2         go       1

aherve

GameId    Type 
1         chess
2         go  

aherve

PlayerId Score GameId
1        1     1
1        2     2
2        0     1
2        5     2

aherve

async function main () {
  const user = await User.findOne({})
  // execution is paused until a user is found and returned
  console.log(user.email)
}

aherve

import app from '../../app'
import fixtures from '../ourFixtures'
import * as supertest from 'supertest-as-promised'
const request = supertest(app)

describe('Things', () => {
  before(async () => {
    await fixtures.clearDb() // assume clearDb is a function that returns a promise
    await Thing.create({}) // mongoose style
  }))