Plant UML

Software designers sometimes need to present UML sequence diagrams like this one. This kind of thing is absurdly fiddly to draw with most graphics packages. But there’s a language called PlantUML that allows us to write them as text and render them in various software tools, including WordPress with the plugin called PlantUML Renderer. The … Read more

Jupyter on Raspberry pi

Jupyter is an excellent free open source package for literate programming, especially in Python. It’s nice because it keeps a good record of what you try in experimental programming. And it’s easy to tidy up your work when you figure out what you’ve done, and store or publish it. It’s also sweet because it’s a … Read more

Avoiding Amazon

It’s hard to avoid the Amazon behemoth even if you prefer to send your business to other companies. And, there’s not a whole lot an individual householder can do to spread the wealth around because, not much wealth. But here are a few things you can do. Most importantly: try to think of yourself as … Read more