Exploring Dependent Types in Idris

Exploring Dependent Types in Idris

When I’m not coding the "impossible" at Art+Logic, I take a lot of interest in new programming technologies and paradigms; even if they’re not yet viable for use in production, there can often be takeaways for improving your everyday code.

My current fascination is the Idris programming language, a research language built around making dependent types practical. This is a quick primer on what dependent types are, how they work in Idris, and how they can change the way you think about types in other languages; we’ll assume no prior knowledge of Idris or of purely functional languages in general, but a basic familiarity with functional programming will make things easier to follow.

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Legacy Vulnerabilities AKA Software Senescence

Legacy Vulnerabilities AKA Software Senescence

Does your business still have an XT computer in the back office because it’s running that one version of some database software that your business depends on? Yeah, we know there is. Most modern software doesn’t work like that.

If you aren’t keeping your custom software up with the changing computing environment, it will fail not necessarily because it has flaws, or the hardware can no longer meet the demand, but because the support your software relies upon has changed.

Let’s look at the vulnerabilities you must manage so that your software does not reach its end of life before losing its inherent usefulness.
 

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Asynchronous Python – A Real World Example

Asynchronous Python – A Real World Example

Introduction

We have a customer that developed a hardware device to make physical measurements. Some years ago we wrote a suite of software tools for the customer: a tablet application for configuring the hardware device, a django web server to receive uploaded XML documents generated by the device, and a user-facing web application (using the same django server), providing reporting and data analytics.

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