tutorial – Code Trips & Tips

Python Magic Methods

July 22, 2016

Make your code more pythonic by using magic methods in your classes. … More Python Magic Methods

filecrypt – OpenSSL file encryption

July 13, 2016

overview Uses OpenSSL library to encrypt a file using a private/public key pair and a one-time secret. A full description of the process can be found here. configuration This uses a YAML file to describe the configuration; by default it assumes it is in /etc/filecrypt/conf.yml but its location can be specified using the -f flag. … More filecrypt – OpenSSL file encryption

Using Java 8 Optional and Functional interfaces to reduce boilerplate

May 29, 2016

The code presented here makes judicious use of Optionals, Functionals and the new Streaming interfaces.
It’s all very awesome, and makes me wonder: Java, what took you so long? … More Using Java 8 Optional and Functional interfaces to reduce boilerplate

Using Stout to parse command-line options

May 14, 2015

A new post of mine has just been published on Mesosphere Blog: Almost every program needs to parse some form of command-line argument. Often, this is a pretty large set of possible options, and the management of the various options is usually pretty tedious while adding virtually no value to the program’s functionality. Google’s gflags … More Using Stout to parse command-line options

Python decorators (again)

January 27, 2014

Quite some time ago, I’d posted an entry about Python Class decorators; recently I happened to butt heads (again) against decorators, so I thought I’d have another go at documenting what goes where. As usual, I recommend this post as a very good summary, and I won’t repeat what is already there. In particular, I … More Python decorators (again)

Python Decorators

January 6, 2013

I’ve now been working in Python for more than a year and we have been doing some pretty crazy stuff, especially around decorators and authorization/permissions implementations. Admittedly, Python decorators are one of the bits of the language that can be best defined as ‘magic’ and certainly remains puzzling for someone like me, used to Java … More Python Decorators

Dynamic Pages adds AJAX to your JSF pages

May 7, 2007

I was going through the “Adding Ajax to JavaServer Faces Technology With Dynamic Faces” tutorial, and it occurred to me that it would have been a much more AJAXy solution to have the check on the existence of the User ID to occur when the user moved to the next field (without the need to … More Dynamic Pages adds AJAX to your JSF pages

Code Trips & Tips

Adventures in developing distributed systems in Java and Python