| hash = {a: 23, b: 24, c: 25} | |
| puts hash.values.inject(&:+) == (23+24+25) # >> true |
| class ChangeTableName < ActiveRecord::Migration | |
| def self.up | |
| rename_table :a_tables, :b_tables | |
| end | |
| def self.down | |
| rename_table :b_tables, :a_tables | |
| end | |
| end |
| class Addindex < ActiveRecord::Migration | |
| def self.up | |
| add_index :a_table, :name | |
| end | |
| end |
| class CreateTable < ActiveRecord::Migration | |
| def self.up | |
| create_table :a_tables do |t| | |
| t.column :name1, :integer, :null => false | |
| t.column :name2, :text, :null => false | |
| t.timestamps | |
| end | |
| end | |
| def self.down |
| <div class="video-container"> | |
| <iframe src="http://player.vimeo.com/video/78074896" width="500" height="281" frameborder="0"></iframe> | |
| </div> |
| body { | |
| font-size: 18px; | |
| margin 0 auto; | |
| @media screen and (max-width: 1040px){ | |
| font-size: 16px; | |
| width: 60%; | |
| } | |
| @media screen and (max-width: 600px){ |
| package main | |
| import ( | |
| "encoding/json" | |
| "fmt" | |
| "strings" | |
| ) | |
| const blob = `[ | |
| {"Title":"0redev", "URL": "http//oredev.org"}, |
| package main | |
| import ( | |
| "flag" | |
| "fmt" | |
| "time" | |
| ) | |
| var ( | |
| message = flag.String("message", "Hello!", "What to say") |
sudo apt-get install alien)sudo alien -i oracle-instantclinet*-basic-*.rpmsudo alien -i oracle-instantclinet*-devel-*.rpm| def function(*args) | |
| puts args.join(",") | |
| end | |
| function("a","b","c") | |
| # >> a,b,c |