Getting started:
Related tutorials:
- MySQL-CLI: https://www.youtube.com/playlist?list=PLfdtiltiRHWEw4-kRrh1ZZy_3OcQxTn7P
- Analyzing Business Metrics: https://www.codecademy.com/learn/sql-analyzing-business-metrics
<!-- | |
HTML5 data- attributes using RESTful approach | |
HTML5 specifies extensible attributes like data-foo=“bar” (or as in Twitter Bootstrap data-toggle=“modal”), which poses two problems for Rails. | |
First, if you’re using symbol notation in link_to (for instance) to specify attributes, this fails (dash is not a valid symbol character), so: | |
--> | |
<% link_to('Edit', '../main.html', :class => "btn", :data-toggle => "modal") %> <!-- INVALID!! --> | |
<!-- | |
There are two solutions: |
Getting started:
Related tutorials:
Install ElasticSearch and Java
1 wget https://download.elasticsearch.org/elasticsearch/elasticsearch/elasticsearch-1.0.1.deb
2 sudo dpkg -i elasticsearch-1.0.1.deb
3 sudo update-rc.d elasticsearch defaults 95 10
4 sudo add-apt-repository ppa:webupd8team/java
5 sudo apt-get update
6 sudo apt-get install oracle-java7-installer
7 java -version
Below are the Big O performance of common functions of different Java Collections. | |
List | Add | Remove | Get | Contains | Next | Data Structure | |
---------------------|------|--------|------|----------|------|--------------- | |
ArrayList | O(1) | O(n) | O(1) | O(n) | O(1) | Array | |
LinkedList | O(1) | O(1) | O(n) | O(n) | O(1) | Linked List | |
CopyOnWriteArrayList | O(n) | O(n) | O(1) | O(n) | O(1) | Array | |
# AWS specific install of Docker | |
sudo yum update -y | |
sudo yum install -y docker | |
sudo service docker start | |
sudo usermod -a -G docker ec2-user | |
# exit the SSH session, login again | |
# Docker | |
docker run -d --hostname my-rabbit --name some-rabbit -p 4369:4369 -p 5671:5671 -p 5672:5672 -p 15672:15672 rabbitmq |