fteem

DataMapper::setup(:default, "sqlite3://#{Dir.pwd}/blog.db")

class Post
  include DataMapper::Resource
  property :id, Serial
  property :title, String
  property :body, Text
  property :created_at, DateTime
  property :updated_at, DateTime
end

fteem

ActiveRecord Terminology  		 	DataMapper Terminology
has_many 	                 	 	has n
has_one 	 	 	 	 	has 1
belongs_to 	 	 	 	 	belongs_to
has_and_belongs_to_many 	 	 	has n, :things, :through => Resource
has_many :association, :through => Model 	has n, :things, :through => :model

fteem

require "rubygems"
require "sequel"

# connect to an in-memory database
DB = Sequel.sqlite

# create an items table
DB.create_table :items do
  primary_key :id
  String :name

fteem

12.1.32. RENAME DATABASE Syntax

RENAME {DATABASE | SCHEMA} db_name TO new_db_name;

This statement was added in MySQL 5.1.7 but was found to be dangerous and was removed in MySQL 5.1.23. It was intended to enable upgrading pre-5.1 databases to use the encoding implemented in 5.1 for mapping database names to database directory names (see Section 8.2.3, “Mapping of Identifiers to File Names”). However, use of this statement could result in loss of database contents, which is why it was removed. Do not use RENAME DATABASE in earlier versions in which it is present.

fteem

mysqldump -u username -p -v olddatabase > olddbdump.sql
mysqladmin -u username -p create newdatabase
mysql -u username -p newdatabase < olddbdump.sql

fteem

12.1.32. RENAME DATABASE Syntax

RENAME {DATABASE | SCHEMA} db_name TO new_db_name;

This statement was added in MySQL 5.1.7 but was found to be dangerous and was removed in MySQL 5.1.23. It was intended to enable upgrading pre-5.1 databases to use the encoding implemented in 5.1 for mapping database names to database directory names (see Section 8.2.3, “Mapping of Identifiers to File Names”). However, use of this statement could result in loss of database contents, which is why it was removed. Do not use RENAME DATABASE in earlier versions in which it is present.

To perform the task of upgrading database names with the new encoding, use ALTER DATABASE db_name UPGRADE DATA DIRECTORY NAME instead (see Section 12.1.1, “ALTER DATABASE Syntax”). 

fteem

  describe ".send_surveys" do

    it "sends those users an email with survey" do
      SurveySender.should_receive(:unsurveyed_users).and_return [user, user2]

      SurveyMailer.should_receive(:send_survey).with(user).and_return mailer = double(:mailer)
      mailer.should_receive(:deliver)

      user.should_receive(:email)
      Rails.logger.should_receive(:info)

fteem

class Student 
  attr_accessor :first_term_home_work, :first_term_test, :first_term_paper attr_accessor,
                :second_term_home_work, :second_term_test, :second_term_paper

  def first_term_grade 
    (first_term_home_work + first_term_test + first_term_paper) / 3 
  end

  def second_term_grade 
    (second_term_home_work + second_term_test + second_term_paper) / 3 

fteem

Randomizer.configure do |config|
  config.from = 100
  config.to = 200
end

fteem

package main

import (
	"container/list"
	"fmt"
)

type CacheItem struct {
	key             string        // Key of item
	value           interface{}   // Value of item