Language style… Fitting in 21 Sep 2022 This article first appeared in PragPub back in 2016. This, what you hold in your hand, was almost the twelth article in my series on modern functional programming, which appeared…
Games Mahjong – the best game you don’t play (and maybe should) 9 Jul 20209 Jul 2020 In recent months, I've fallen to a particular addiction - to the game of Mahjong. I like a range of games, from venerable heavy-weights like Go, through modern classics like…
Uncategorized Motherhood and apple pie 23 Jan 2018 I'm full of flu and feeling quite grumpy, so what better time to unload on something that often annoys me? Today's target is that aura of "righteousness" that leads some people…
Uncategorized The FP Anthology book has just been printed! 2 Aug 2017 I'm slightly pleased to announce that Programming: A PragPub Anthology has now been printed! My box of free copies arrived last week, fortunately coinciding with a parental visit (and gave me…
Uncategorized My older articles in PragPub 2 Aug 201721 Sep 2022 UPDATE: the original links no longer work, but some of the PragPub content from a range of authors is being added to Medium, see https://medium.com/@pragpub. See https://medium.com/search?q=callaghan+pragpub for a list…
Uncategorized I’ve written part of a book! 19 May 2017 I'm pleased to announce that some of my earlier articles for the PragPub magazine will be published in a new anthology, which is available in Beta (e-Book) now and due to be…
Articulacy… Roman Numerals 17 Dec 2015 I was recently at a FP-ish meetup group in Newcastle, and one topic of discussion is how to TDD the Roman Numerals kata. Note: for regular readers, TDD is generally…
Uncategorised I’m not writing a book 7 Apr 2015 You might have noticed, still no book. Sorry about that. It got shelved early in 2014 for a number of reasons. A bit of running out of steam after a…
Uncategorized I’m writing a book! 1 Aug 2013 I'm rather delighted to confirm that I'm now writing a book! You might have seen my articles in the Pragmatic Programmers' in-house magazine. (If not, start with this one from August 2012. There's eleven…
Uncategorized Mind the gap please 16 Apr 2013 Or, how all programming language evolution charts are incomplete. Or even, how so many of you are looking the wrong way! Just a quick moan this time. No doubt you've all…