spalladino

# Backup
docker exec CONTAINER /usr/bin/mysqldump -u root --password=root DATABASE > backup.sql

# Restore
cat backup.sql | docker exec -i CONTAINER /usr/bin/mysql -u root --password=root DATABASE

ndelitski

clone:
  path: github.com/gogits/gogs

build:
  image: golang:$$GO_VERSION

  environment:
    - TAGS="pam sqlite"

    - BUILD_OS="windows linux darwin freebsd openbsd netbsd"

davidejmancino

nepsilon

Importing and exporting CSV files with PostgreSQL

Let’s see how to use PostgreSQL to import and export CSV files painlessly with the COPY command.

Import CSV into table t_words:

COPY t_words FROM '/path/to/file.csv' DELIMITER ',' CSV;

You can tell quote char with QUOTE and change delimiter with DELIMITER.

masciugo

begin
  require 'bundler/inline'
rescue LoadError => e
  $stderr.puts 'Bundler version 1.10 or later is required. Please update your Bundler'
  raise e
end

gemfile(true) do
  source 'https://rubygems.org'
  gem 'rails', github: 'rails/rails'

kule

# (concern) e.g. for Post model
module UserTrackable

  extend ActiveSupport::Concern

  included do
    before_create :set_created_by
    before_save   :set_updated_by

    belongs_to :created_by, class_name: 'User', foreign_key: 'created_by_id'

hofmannsven

SCSS

• Website: http://sass-lang.com/
• Docs: http://sass-lang.com/guide
• Tutorial: https://www.codecademy.com/learn/learn-sass

Global Setup

Install on OS X: sudo gem install sass

CLI Usage

Version info: sass -v

eliotsykes

require 'rails_helper'

RSpec.describe TodosController, :type => :controller do

  describe "GET #index" do
  #describe "POST #create" do
  #describe "GET #show" do
  #describe "PATCH #update" do (or PUT #update)
  #describe "DELETE #destroy" do
  #describe "GET #new" do

mgamini

  defmodule EmailValidator do
  
    # ensure that the email looks valid
    def validate_email(email) when is_binary(email) do
      case Regex.run(~r/^[\w.!#$%&’*+\-\/=?\^`{|}~]+@[a-zA-Z0-9-]+(\.[a-zA-Z0-9-]+)*$/i, email) do
        nil ->
          {:error, "Invalid email"}
        [email] ->
          try do
            Regex.run(~r/(\w+)@([\w.]+)/, email) |> validate_email

a-chernykh

require 'net/http'

def download_net_http(urls, thread_count)
  queue = Queue.new
  urls.map { |url| queue << url }

  threads = thread_count.times.map do
    Thread.new do
      Net::HTTP.start('our-s3-bucket.s3.amazonaws.com', 80) do |http|
        while !queue.empty? && url = queue.pop