leemour

start_id = Product.maximum(:id) + 1
table = :products
ApplicationRecord.connection.execute("ALTER SEQUENCE #{table}_id_seq RESTART WITH #{start_id}")

leemour

module Fibonacci

  class << self
    def sum_of_even_upto(max)
      upto(max).inject(0) do |sum, item| 
        item.even? ? sum + item : sum  
      end
    end

    def upto(max)

leemour

[1] (pry) main: 0> add = -> (a, b) { a + b }
=> #<Proc:0x007ffde11d72c0@(pry):1 (lambda)>

# Call proc with two arguments
[2] (pry) main: 0> add.(1, 2)
=> 3

# Call proc with one argument
[3] (pry) main: 0> add.(1)
ArgumentError: wrong number of arguments (1 for 2)

leemour

SELECT count(*), DATE_TRUNC( 'month', created_at ) created_date
FROM businesses 
GROUP BY created_date

leemour

namespace :db do
  desc "Backup DB as separate schema"
  task :backup_to_schema, [:created_at] => :environment do |t, args|
    schema = 'copy'
    created_at = args.created_at || 2.years.ago
    ApplicationRecord.connection.execute(
      "DROP SCHEMA #{schema} CASCADE; 
      CREATE SCHEMA copy"
    )
    ActiveRecord::Base.connection.execute "SET search_path TO public, #{schema}"

leemour

class Human
  def initialize(name)
    @name = name
  end

  def read_book(book, page_number)
    page = book.open_page(page_number)
    read(page)
  end

leemour

!function(){function t(){function n(t,e){s=s.concat(RFB.messages.keyEvent(t,e))}var o=e.shift(),s=[],i=o.charCodeAt(),c=-1!=='!@#$%^&*()_+{}:"<>?~|'.indexOf(o),r=XK_Shift_L;c&&n(r,1),n(i,1),n(i,0),c&&n(r,0),rfb._sock.send(s),e.length>0&&setTimeout(t,10)}var e=prompt("Enter text to be sent to console").split("");t()}();

leemour

https://stackoverflow.com/questions/46687645/upgrade-postgresql-from-9-6-to-10-0-on-ubuntu-16-10

leemour

fetch('http://code.jquery.com/jquery-latest.min.js').then(response => response.text()).then(text => { eval(text); console.log($) })

leemour

find app/assets/stylesheets -name "*.css.scss" -exec rename 's/\.css.scss$/.scss/' '{}' \;

#!/bin/sh
for file in $(find ./app/assets/stylesheets/ -name "*.css.scss")
do
    git mv $file `echo $file | sed s/\.css//`
done