Index of ‘J Language’ Articles

January 19, 2011

Articles, J Language

J: Working with Henry Rich’s Example

Today I’ll report on experience working part way through one piece of Henry Rich’s J program for bowling. Understanding dawns slowly.

We have referred to Rich’s example before. Here it is in its entirety:

NB. Index of each ball that 

January 10, 2011

Articles, J Language

J Learnings

Just recording random discoveries as I work through the EasyJ book. Read if all that interested in how I think ...

January 8, 2011

Articles, J Language

Working Up to J

To do J, you must change the way you think. You must also learn many new words and other parts of speech. Working on part one today ...

May 3, 2006

Articles, J Language

Bowling Vectors

June Kim posted a J Language version of bowling that is very vector-oriented. As an experiment, I coded up a vector-style version in Ruby, TDD of course. It turned out to be kind of interesting.

Recent Articles

Refactoring — Not on the backlog!

There has recently been a lot of noise on the lists, and questions at conferences, about putting refactoring “stories” on the backlog. This is invariably an inferior idea. Here’s why:


When our project begins, the code is clean. The field …

Build it right to build the right thing

You can’t build the right product if you can’t build the product right.

I tweeted that this morning, in response to a Twitter-vibe that was flitting around. I’d like to follow it up here with a bit more meat.

The …

Estimate This! (or not)

My friends and colleagues in the #NoEstimates circles have some good ideas, as I've commented elsewhere. I'm left, though, with a couple of concerns.