riccardo-felipe

How to set-up bash completion on Mac for Docker, Docker Machine and Docker-Compose

Run:

brew install bash-completion

Add the following lines to your ~/.bash_profile:

 if [ -f $(brew --prefix)/etc/bash_completion ]; then

riccardo-felipe

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

riccardo-felipe

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.

riccardo-felipe

Keybase proof

I hereby claim:

• I am riccardo-felipe on github.
• I am riccardof (https://keybase.io/riccardof) on keybase.
• I have a public key ASCc6Ac0ZK0quLuusY6hkRYLzjnnUi5WkEJIa-OzYRWm_go

To claim this, I am signing this object:

riccardo-felipe

# Remove previous installations
sudo apt-get remove vim vim-runtime vim-tiny vim-common

# Install dependencies
sudo apt-get install libncurses5-dev python-dev libperl-dev ruby-dev liblua5.2-dev

# Fix liblua paths
sudo ln -s /usr/include/lua5.2 /usr/include/lua
sudo ln -s /usr/lib/x86_64-linux-gnu/liblua5.2.so /usr/local/lib/liblua.so