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namespace :db do | |
desc "Import production data to ENV['to'] database" | |
namespace :import do | |
desc "Import production db to whatever 'ENV['to']' db is set to and s3 sync" | |
task :production => :environment do | |
## example rake db:import:production to=staging s3=true | |
## or no s3 | |
## example rake db:import:production to=staging |
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require "rubygems" | |
require "time" | |
require 'oj' | |
require "awesome_print" | |
require 'pry' | |
class Parser | |
attr_accessor :info_hash | |
def initialize |
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# gem install awesome_print | |
# gem install benchmark | |
# gem install pry | |
require 'awesome_print' | |
require 'pry' | |
require 'benchmark' | |
# Given an array of -2000 to 2000, find all the combinations of numbers that equal 10 | |
class SumOfEach |
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string = "Oversee.NET" | |
counter = 1 | |
string.chars.map do |ch| | |
case counter % 3 | |
when 0 then | |
ch.upcase! | |
else | |
ch.downcase! | |
end | |
counter += 1 if ch.match(/\w/) |
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require 'active_support/core_ext/enumerable' | |
require 'pry' | |
class ProjectEuler | |
attr_accessor :hash, :array | |
def initialize( args = {} ) | |
self.hash = {} | |
self.array = [] | |
end |
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module Boolean | |
end | |
TrueClass.send :include, Boolean | |
FalseClass.send :include, Boolean | |
true.is_a?(Boolean) #=> true | |
module ArrayExtensions | |
def rpermute( possibilities = self.uniq.count, p_array = [], index = 0 ) | |
0.upto( possibilities - 1 ) do |i| |
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# You are being asked to implement classes to manage a tree of nodes. This should be done in Ruby. | |
class TreeNode | |
attr_accessor :value, :key, :children | |
def initialize( args = {} ) | |
self.value = args.fetch(:value, 1) | |
self.key = args.fetch(:key, 'abandoned') | |
self.children = args.fetch(:children, {}) | |
end | |
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# You are being asked to implement classes to manage a tree of nodes. This should be done in Ruby. | |
class TreeNode | |
attr_accessor :value, :key, :children | |
def initialize( args = {} ) | |
self.value = args.fetch(:value, 1) | |
self.key = args.fetch(:key, 'abandoned') | |
self.children = args.fetch(:children, {}) | |
end | |
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require 'pry' | |
require 'benchmark' | |
require 'benchmark-memory' | |
class User | |
def initialize( args = {} ) | |
raise 'user_ids needs to be an array' unless args[:user_ids].is_a?(Array) | |
@user_ids = args[:user_ids] | |
end |
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require 'pry' | |
require 'benchmark' | |
require 'benchmark-memory' | |
class Array | |
def top_occurrence_0(k) | |
counter = Hash.new{ |k, v| k[ v ] = 0 } | |
self.each { |id| counter[ id ] += 1 } | |
counter.sort_by{ |id, counts| -counts }[0, k].map{ |id_count| id_count[0] } |
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