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Landmark Trust stay at Whiteford Temple
First stay in a Landmark Trust property in Callington, Cornwall
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Weekend in Brighton
Spent two days visiting Brighton with my friend Arrie having (spectacular) coffee, great food, long chats, and taking some nice photos.
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Belgravia walk
Definitely one my favourite areas of London, a few snaps from an afternoon walk with friends.
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Moorgate to Spitalfields
Quick photo-walk on a Saturday from Moorgate on our way to Spitalfields market for hand pulled noodles and soup dumplings, ending on Bricklane with a hot chocolate from Dark Sugars.
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White Cliffs of Dover Day Trip
A great day trip idea, it's just over a 2 hour drive from North London, and depending on what time you leave you may have time for a stop over in Canterbury on the way back.
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Returning to Iceland on our 10 year anniversary
Jenn and I returned to the land of fire and ice, this time for a road trip around the ring road to celebrate 10 years of commitment to partnership
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Respecting user preferences for color scheme and contrast
I had a lot of fun building this new site and catching up on learning some CSS media queries. Here's how I used CSS custom properties and a basic system to support both a dark-mode and a high-contrast mode for my new site.
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Cherry Blossoms in Greenwich Park
Nice photo-walk despite the rain and the fact that we unknowingly went on the day of an organised marathon through the park. A collection of photos for a year long project photographing the architecture and flowers of London.
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Magnolia's in hampstead
A collection of photos for a year long project photographing the architecture and flowers of London, this was an after-work walk with Jen around our neighborhood to capture some of the blooming Magnolia's.
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Belgravia, London photo walk
A collection of photos for a year long project photographing the architecture and flowers of London, one of our first walks of the year.
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How to authenticate a user without a username, password, or database
Latest presentation October 2019, Onfido, London; previously on September Abstractions II, Pittsburgh, USA; first in February 2019, Rubyfuza & friends, Cape Town, South Africa
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5 Useful things you can do with tmux
A friend at work (it’s you Yedida) asked why I use tmux instead of a regular terminal, so I thought I’d share my reasons here and explain some of the things it can do that regular terminal emulators typically can’t.
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Play is a validated activity for learning
Play is a validated activity through which learning occurs. I’ve noticed in my own journey that I’ve learnt things I couldn’t have learnt in any other way than by simply having the curiosity and drive to try and “figure things out”.
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If it's not a tradeoff it's a mistake
Whenever I need to make a decision I use a model because in software, every decision has a tradeoff. I find that using a model is extremely valuable as it helps put polarising views into perspective. For kicks, let’s discuss choosing a javascript framework (yikes).
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Software estimation in hours with Scrum
Software estimation is difficult, and that's why I'd like to share a process that has worked for me, based on some other really smart people's thoughts. The gist of it: List what needs to be done in tasks of no larger than 4 hours. Then place them in groups according to how they can be tested by someone else.
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Diagnosing cancer with machine learning
Many years ago, I gave a talk on how to diagnose cancer with machine learning. I shared this talk locally in South Africa, and twice in the USA. It was a roller coaster ride, and this why I did it...
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The Dino Deep Work Policy
Getting things done when your team needs you is tough. This is my experience on a strategy that has worked for me: on notifications, focus, deep work, and being intentionally, fully present in every moment.
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The horizon of software development estimation
How far into the future should a team estimate software development? To provide insights into this somewhat tricky and frustrating question, I have devised what I believe to be a useful metaphor that I want to share with you - I call it the horizon of software development estimation.
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Platform45: Our Agile Design & Development Journey
August 2017, Agile Africa, Johannesburg, South Africa
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View objects in Ruby with SimpleDelegator
View objects are given little love in Ruby because of Rails' lack of a true view layer in it's architecture. Let's look at some view object patterns that can help you scale your server rendered views.
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Diagnosing Cancer with Machine Learning
Latest presentation August 2015 at Madison+ Ruby, Madison, WI, USA; previous June 2015 at Ruby Nation Silver Spring, MD, USA; and February 2015 at RubyFuza, Cape Town, South Africa
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dotfiles, vim, & tmux
dotfiles are a developers configuration files that make them feel at home working on a machine. Here are mine.
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Software Design Patterns in C++ & UML
OOP software is a complex game attempting to manage mutable state. There are well known patterns for common problems, you probably know them but don't know they had a fancy name. Here are some examples in C++.
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Computer Scientist's Responsibility
Work on something that matters to the world. A developer has the ability to do this, so they should also carry some responsibility to seeing this actually happen.
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Evolving Investment Strategies Using Genetic Programming
Evolve an investment strategy represented as a decision tree, referred to as the phenotype, using genetic programming, wait what?. This illustrates for a specific period, fundamental indicators winning out over technical indicators.
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Vulnerability Detection System
Everyday our devices share data on public networks. The SWAP system uses active and passive scanning techniques, determines if a device is running compromised software, and blocks it from accessing the network, bummer.