These aren't all of them, but I think they are some of the most useful. # making a directory in another directory that doesn't yet exist... FileUtils.mkdir_p '/path/to/your/directory/that/doesnt/exist/yet' # recursively remove a directory and the conten...

Let's create a table that will hold some dummy data. > create table fruits (id serial primary key, name varchar, color varchar); > insert into fruits (name, color) values ('apple', 'red'); > insert into fruits (name, color) values ('ap...

This is how to reshape an array using Python without Numpy. This is a fairly simple task but it can be a little confusing to wrap your head around. I ran into this problem while working with Flask, working with array from form fields. I wanted to us...

Using the system clipboard with tmux on OS X is broken. I really like tmux but having copy and paste is kind of important for me. Here is my attempt to get it back with a simple bash script until I find something better. The approach is to take a named pi...

What is Rack? Rack provides a minimal, modular and adaptable interface for developing web applications in Ruby. By wrapping HTTP requests and responses in the simplest way possible, it unifies and distills the API for web servers, web frameworks, and sof...