By Mboldfield at English Wikipedia [Public domain], via Wikimedia Commons

Call stack complexity

Matthew Sackman wrote “Over on the morning paper, Adrian’s recently covered a number of papers looking at trying to detect bugs in code using slightly unusual means (i.e. not the usual combination of lots of buggy tests and lots of static checks). So that’s been on my mind lately, at least when it gets a chance in between…”

By Btcpg (Own work) [CC BY-SA 4.0 (], via Wikimedia Commons

Practising Software Engineering

Matthew Sackman wrote “A tourist stops a musician on the streets of New York. “Excuse me, can you tell me how to get to Carnegie Hall?” “Of course”, answers the musician, “Practise, practise, practise!” In the book ‘Outliers: The Story of Success’, the author Malcolm Gladwell repeatedly mentions the “10,000-Hour Rule”, claiming that the key to achieving world…”

By Wjablow (Own work) [CC BY-SA 3.0 (], via Wikimedia Commons

The life-changing magic of refactoring

James Uther wrote “I’m really a unix guy, but I have to admit, the whole .NET/SQLserver stack is hugely empowering. An average employee can take it, and with next to no knowledge or experience, but with a lot of determination and time, can write enough code to underpin an entire company. You start with a windows form, place…”

By Jeff Schmaltz, MODIS Rapid Response Team, NASA/GSFC ( [Public domain], via Wikimedia Commons

Let’s Run Science! Part iota;

James Uther wrote “In our last jaunt, we had a look at code that take all the various measurements of temperature that have been taken over the last few hundred years, and pull them together into something we can usefully run stats on. The headline finding of all this is that on average, the planet has warmed over…”

Honeycomb, 2001, Gavin Mackintosh, South Molton, UK. Creative Commons, via WikiCommons.

Java multi methods new home

David Ireland wrote “I’ve split Java multi-methods out of LShift’s Java library. That’s mostly because Guava has equivalents for just about everything else in the library, but the multi-methods part is still unique, as far as I’m aware. You can find it here. You can raise tickets there as well. For more information, see the original post. Here’s…”

By Tangopaso (Self-photographed) [Public domain], via Wikimedia Commons

Memory matters – even in Erlang

Marek Majkowski wrote “Some time ago we got an interesting bug report for RabbitMQ. Surprisingly, unlike other complex bugs, this one is easy to describe:  At some point basic.get suddenly starts being very slow – about 9 times slower!”

My thoughts on real time full-text search

Marek Majkowski wrote “Usually, search engines can look through data outdated by a few days. But Twitter search seems to be returning real time search results. That’s why it’s interesting how it works. In this post I’ll present a short introduction to full-text search engines and my private thoughts about a possible implementation of a better one. Let’s…”

OMeta for Scheme

Tony Garnock-Jones wrote “Speaking of OMeta/JS [old link:] and OMeta in general, I’ve implemented an OMeta for Scheme. Currently it runs in MzScheme, but it should be fairly portable, with dependencies only on a handful of commonly-implemented SRFIs. I intend to properly libraryise it — making it into a proper MzScheme module — and to port it…”

Adding distributed version control to TiddlyWiki

Tony Garnock-Jones wrote “After my talk on Javascript DVCS at the Osmosoft Open Source Show’n’tell, I went to visit Osmosoft, the developers of TiddlyWiki, to talk about giving TiddlyWiki some DVCS-like abilities. Martin Budden and I sat down and built a couple of prototypes: one where each tiddler is versioned every time it is edited, and one where…”

TiddlyWiki, Quining, and Smalltalk

Tony Garnock-Jones wrote “Yesterday I visited Osmosoft, the developers of TiddlyWiki, to chat about getting some DVCS-like functionality into TiddlyWiki. Jeremy mentioned in passing that TiddlyWiki is, if you squint, a slightly cheating kind of a Quine. It struck me this morning that TiddlyWiki has strong similarities to another famous almost-Quine, the Smalltalk system. TiddlyWiki is a composition…”