I had been looking forward to this User Meeting for a whole host of reasons, mainly because there would be a whole lot of new experiences; I’d never been to Scotland before, I’d never been in one room with quite so many smart APLers, and I’d never been to a work related conference. There was an opportunity for a lot … Read More

I often got frustrated with puzzles as a child. Not in the sense that I couldn’t do them, but that I would never be satisfied until I could find a solution. It’s that kind of persistence which led me to propose this problem:Sliding puzzles (Read about them on Wikipedia), like the one pictured above, are something I remember from my … Read More

I was working on phase one of the Dyalog Problem Solving contest for students, and I came across a problem that gave me a bit of trouble: Write a dfn that takes vectors as its left and right arguments and returns them “meshed” into a single vector formed by alternately taking successive elements from each argument. The arguments do not … Read More

The journey there Crawley to Bramley isn’t supposed to be the most complicated journey in the world, yet somehow it turned out to be for us. My mum decided that she’d take me up there to spare me the pain of public transport. With conductor strikes and England’s train system being a bit of a mess in general, I tried … Read More