How to Remove Your Last Git Commit
Remove your last commit (if you haven't pushed yet)
git reset --hard HEAD~1
To see changes that have been committed and their position in HEAD
git reflog
And to undo your previous reset and advance the cursor to the reference immediately behind the cu...
Written by Sean Behan on 06/17/2012
How To Export A MySQL Database to JSON, CSV and XML with Ruby and the ActiveRecord Gem
It's trivial to export data from a mysql database with Ruby and ActiveRecord. All you have to do is establish a connection and define a class that represents the table.
require 'rubygems'
require 'active_record'
ActiveRecord::Base.establish_con...
Written by Sean Behan on 06/23/2012
Reshape an Array of Form Inputs for Flask with getlist()
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...
Written by Sean Behan on 03/07/2017
Active Record Find Methods
Active Record find methods for selecting range from http://charlesmaxwood.com/notes-from-reading-activerecordbase/
Student.find(:all, :conditions => { :grade => 9..12 })
return a range
Student.find(:all, :conditions => { :grade => [9,11,12] })
will retu...
Written by Sean Behan on 06/17/2012
When the cloud is a good idea
A buddy of mine is a talented, but paranoid System Administrator for a small web company. He refuses to see the truth and the beauty in the wonderful world made possible by cloud computing services like Amazon's EC2. Amazon is not the only game in town. T...
Written by Sean Behan on 06/17/2012
