How and why to use custom error types in JavaScript — Handling errors well can be tricky. How Error() historically worked in JavaScript hasn’t made this easier, but using the Error class introduced in ES6 can be helpful Throwing errors in JavaScript JavaScript supports try/catch/finally but the Error object it uses works differently from Exceptions in other languages and it doesn’t provide a way to…

Do claims of bias in BBC Question Time panel have merit? — Update: This analysis was referenced in The Economist. The BBC has been fighting back against accusations of bias in the selection of political guests. Such accusations are not new, but do they have merit? In an attempt to defend the impartiality of the show the BBC Press Team recently published…

Working around Cross Origin restrictions during development — Making requests to HTTPS APIs from HTTP sites running on localhost can be a pain, especially as browsers keep changing how they expose the option. Browser Settings The only way to turn off Cross Origin Restrictions in Chrome is to turn off the feature completely when starting the browser by passing arguments…

From GitHub to Docker Hub to Docker Swarm — Configuring automated deployment of an image to Docker Hub every time a change is pushed to a specific GitHub branch (or when a new release is tagged) is easy to do with Docker Hub user interface. Docker Hub will automatically configure your GitHub repository to trigger this for you and…

Docker Swarm is a great way to deploy Docker Containers on AWS or Azure, both of which are supported cloud providers for Docker Community Edition (CE) and Enterprise Edition (EE). A common admin task can be needing to run a command on all nodes on a cluster, either for monitoring…