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Simple Lambda Interpreter Written in F♮

F-natural is alive and well and living at https://github.com/billhails/PyScheme Here s a gist of an interpreter for a tiny lambda language, written in F? View the code on Gist.

F Natural is Back

After a long hiatus I started teaching myself Python, and as a warm-up I wrote a little lambda interpreter in it. I was blown away by how convenient and quick it was in Python, and the project has kind of snowballed to the point where I have most of my previously only vapourware F♮ functional Continue reading F Natural is Back

Singletons are NOT an anti-pattern

I get annoyed sometimes when beautiful patterns like the Null Object Pattern get dismissed out of hand because they use singletons. There is nothing wrong with singletons in themselves, the problem, and the anti-pattern, is when people use singletons to store global state. A good singleton, like the Null Object, keeps no (mutable) state and Continue reading Singletons are NOT an anti-pattern

A Story I Have to Tell

because it s true, and because it s funny, or at least with forty years of perspective parts of it seem funny, it didn t seem very funny at the time As kids growing up in the North East of England in the seventies, we were the original vinyl generation. Music was our life. Not just Continue reading A Story I Have to Tell

Blender Tip – Perspective Clouds

The problem: how to texture a sky sphere with procedural clouds so that the clouds appear to recede into the distance at the horizon, rather than just being wrapped around the sphere. I searched around without luck for a way to do this, before realising that it s so easy to do, however the maths isn t going Continue reading Blender Tip Perspective Clouds

She’s Not Real

This is version 2, better hair, v1 is on Flickr somewhere.

Surprise!

Morbid? I guess, fun though.

Life Just Handed Me a Yellow Card

That s what my GP said when he told me to ring 999 for an ambulance last Wednesday morning, 8:30am, 10th December 2014, after I phoned the surgery complaining of chest pains. For those of my friends that don t already know, I d better say up front that I am now perfectly well and back at home. Within less than five minutes of Continue reading Life Just Handed Me a Yellow Card

Ice Age art

I ve only just discovered the wonderful Nature Videos channel on Youtube. I m trying not to spam, but this is absolutely astonishing.

Gentle giants of the Cambrian