Posts and notes

If you’re a current follower of this blog then you may already know that I’m a bit of a fan of using plain text accounting for managing finances. I mainly use the Ledger text file format and CLI tool for bookkeeping and reporting on finances. This works great, and I can quickly and … Read more (7 minute read)

The problem with image uploads Many services - including web and mobile apps - allow for their users to upload imagery. This could be to enable users to upload an avatar image or perhaps create a gallery of image files. Either way, many photos contain some degree of sensitive metadata information as … Read more (7 minute read)

Python’s Flask framework is an easy and excellent tool for writing web applications. Its in-built features and ecosystem of supporting packages let you create extensible web APIs, handle data and form submissions, render HTML, handle websockets, set-up secure account-management, and much more. … Read more (8 minute read)

Over the last few months, I’ve started to use Weka more and more. Weka is a toolkit, written in Java, that I use to create models with which to make classifications on data sets. It features a wide variety of different machine learning algorithms (although I’ve used the logistic … Read more (2 minute read)

The Heroku Dev Center is a repository of guides and articles to provide support for those writing applications to be run on the Heroku platform. I recently contributed an article for carrying out Direct to S3 File Uploads in Python, as I have previously used a very similar approach to interface with … Read more (1 minute read)

I wanted a way in which users can seamlessly upload images for use in the Heroku application discussed in previous posts. Ideally, the image would be uploaded through AJAX as part of a data-entry form, but without having to refresh the page or anything else that would disrupt the user’s … Read more (2 minute read)