An amazingly detailed map of the London transport network, this time showing detailed lines and platforms.
Jul 11th: If you use AWS Lightsail and want to collect metrics for memory usage (or anything else) using CloudWatch, it's a bit tricky. So I wrote a little tutorial on getting it set up.
May 7th: It turns out you can make a browser based chat client without using any JS or forcing page reloads. Truly amazing/evil. Probably not practical, but does show a clever mechanism for allowing some dynamic data flow with JS disabled.
May 6th: The source code to every Infocom text adventure is now on github. It's all in ZIL, which you can learn about here. Time to replay the HHGTTG game!
May 5th: It sounds like privacy works similar to the sadly defunct Final, but woks as a layer on top of your existing card. Has anyone tried it?
May 3rd: A great piece on pessimism, attitude and code quality
An amazingly detailed map of the London transport network, this time showing detailed lines and platforms.
Jan 2nd: Wrapped up my reading list for 2018, with some great additions
How to build a working combination safe in LEGO - a clever and tiny mechanism
Dec 26th: i think i was reading about SSX Tricky (2001) when I came across Snow, which is in an open beta right now
Dec 26th: at some point i'm going to upgrade my BBQ thermometer from my 2 channel one to this 4 channel beast [via myles]
This is the personal website of Cal Henderson, Slack co-founder & CTO.
I give occasional talks, write code and sometimes articles.
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