Category Archives: Operating System

An operating system (OS) is a collection of software that manages computer hardware resources and provides common services for computer programs ( Wikipedia )

XML Lint Validation Shared Encoding Tutorial

There are a lot of web applications we’ve been involved with that … try to avoid (what we are most “peeved” by, as an issue) gobbledegook when dealing with non-ascii content we try, encoding wise, to corral towards UTF-8 encoding … Continue reading

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XML Lint Validation Browsing Tutorial

Yesterday’s XML Lint Validation Tutorial had us starting out on a discovery tour of XML Lint, yesterday … starting with an HTML or XML URL of interest incoming data way … and today, we add onto that … a local … Continue reading

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XML Lint Validation Tutorial

Do you remember when we discussed the Sanitizer API, talked about at Sanitizer API Primer Tutorial, regarding it as a web application HTML (and more) validation tool? Well, we’ve based a new “validator” of HTML or XML using the XML … Continue reading

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NetNewsWire Web Feed macOS Safari Primer Tutorial

In the same “RSS feed” feel of FeedBurner Web Feed Primer Tutorial, the other day … on this macOS MacBook Air … using … Safari web browser … we had occasion to type into the address bar … https://www.rjmprogramming.com.au/ITblog/tag/document/feed/ to … Continue reading

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Animated GIF Slide Extraction Primer Tutorial

Would you believe … the extraction of an HTML video element still is not too hard using that HTML video element object as the first parameter to a [canvasContext].drawImage method call (as you might recall reading the recent Canvas DrawImage … Continue reading

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Curl HTTP Request Methods Querying Primer Tutorial

We’re not allowed to start a blog posting with “Did you know?” … that would be just so bad?! But … Did you know? That wonderful curl tool can help you … ↘️ 👩🏼‍💻 ↙️ … yes, you, find out … Continue reading

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Making of Canvas Drag and Drop Ephemeral Tutorial

Some recent tutorials called Canvas Drag and Drop Primer Tutorial and Canvas Drag and Drop Less Ephemeral Tutorial involved animated GIF presentations with slides created via the macOS Screenshot desktop application utility (ie. in /Applications/Utilities folder) we talked about with … Continue reading

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Find English Highlighted Words Game Primer Tutorial

Yesterday’s Event Calendar Collaboration Textarea Highlight Linking Tutorial gave us an idea for an English Word Game based on the use of the “/usr/share/dict/words” inbuilt, in our case, English, dictionary you get to look up for free on macOS and … Continue reading

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