How much metadata is in a photo?

A few days ago I wrote about the privacy implications of metadata in a PDF. This post will do the same for photos. You can see the metadata in a photo using exiftool. By default cameras include time and location data. I ran this tool on a photo I took

The Borwein integrals

The Borwein integrals introduced in [1] are a famous example of how proof-by-example can go wrong. Define sinc(x) as sin(x)/x. Then the following equations hold. However where δ ≈ 2.3 × 10−11. This is where many presentations end, concluding with the moral that a pattern can hold for a while

How To Build A Digital JavaScript Drum Kit For Beginners

An Introduction to Node.js Multithreading

Learn how to move processing of long-running JS code to another thread using workers, child processes, clustering,and more. Continue reading An Introduction to Node.js Multithreading on SitePoint.

Chris’ Corner: More Like Scalable Vector Goodness

I’m going to do an SVG issue here, because I find that technology persistently interesting. It’s a bit of a superpower for front-end developers who know how it works and can leverage it when needed to pull of interesting effects. For example, this compelling line drawing scroll effect is powered

Can a programming language implement time travel?

Computer science deals with concurrency, but what about simultaneity?

Avoiding Multiprocessing Errors in Bash Shell

  Suppose you have two Linux processes trying to modify a file at the same time and you don’t want them stepping on each other’s work and making a mess.  A common solution is to use a “lock” mechanism (a.k.a. “mutex”). One process “locks the lock” and by this action

How to Boost WordPress Security and Protect Your SEO Ranking

Learn tips and strategies to identify and address common WordPress security issues to protect your website and search rankings. Continue reading How to Boost WordPress Security and Protect Your SEO Ranking on SitePoint.

This-way-up and Knuth arrows

I was looking today at a cardboard box that had the “this way up” symbol on it and wondered whether there is a Unicode value for it. Apparently not. But there is an ISO code for it: ISO 7000 symbol 0623. It’s an international standard symbol for indicating how to

Understanding How ChatGPT Maintains Context

The concept of context in conversation is crucial, as it allows for coherent and meaningful exchanges. But how does ChatGPT keep context? Continue reading Understanding How ChatGPT Maintains Context on SitePoint.