A very chilling Executive Action on Donald Trump's first day in office

A crazy thing has happened to the U.S., reality TV star Donald J Trump has been elected President. He brought within him into power a litany of people who are hell-bent on Conservative causes - pretty much all the Cabinet Secretary's are people who'd previously promised to destroy the agencies they were appointed to lead, for example.

Troubles with Asynchronous code flows in JavaScript, and the async/await solution of ES-2017

Asynchronous coding is one of those powerful tools that can bite, if you're not careful.

New Book: Asynchronous JavaScript with Promises, Generators and async/await

es-2015-16-17-promises-generators-and-async-await-2-1000.jpgThe JavaScript language is changing, and among the changes are three new features which will revolutionize the way we wri

Asynchronous array operations in ES7 JavaScript async/await functions

A glaring problem with the most excellent async/await feature in JavaScript is all the existing coding structures that only work with synchronous code. In an async/await function it's trivially easy to write a simple "for" loop that contains whatever async/await calls you want. But as soon as you try "Array.forEach" with an async callback function it will fail miserably. That's because this function, like so many existing interfaces which take a callback function, assumes the callback is synchronous.

Useful reading to understand the Promises, Generators and the async/await feature for Node.js/JavaScript

The long-awaited async/await feature for JavaScript promises to make our lives much easier. Instead of asynchronous JavaScript programming being tricky and error-prone, with async/await our code will look like regular synchronous code we write in other languages, but will accommodate asynchronous code execution while retaining the single-threaded nature of JavaScript.

Putin's Russia gains three friendly heads of state in last week's elections

landscape-1450461032-putin-index.jpgWe're all shocked, astonished, etc, that Donald Trump won the 2016 US Presidential Elections. The prospect of Donald Trump as US President goes completely against the grain, and is not what'd been expected, but at the same time we shouldn't be surprised. It did happen, and we must look for an effective way to deal with this fact, including fighting strongly against all the crazy stuff that we know is coming.

Memory-efficient CSV transformation in Node.js

nodejs-dark.pngThose of us who consume/edit/modify/publish CSV files must from time to time transform a CSV file. Maybe you need to delete columns, rearrange columns, add columns, rename volumes, or compute some values taking one CSV file and producing another. In my case, I have a raw CSV file with no column headers that's organized in a way which makes sense for one team in our company, but we need that same data organized a different way, with different column names and containing selected fields.

The advent of async/await for Node.js - Node.js v7 has now arrived

nodejs-dark.pngWith today's first release of Node.js version 7, we now have async/await as a base feature of the platform. This is a significant milestone that wasn't even mentioned in the commit message. The async/await feature is so important that I'm preparing a short book to discuss JavaScript asynchronous programming patterns, that highly features async/await.

Click here for more Node.js programming advice

Make a bash script detect the directory it's stored in, to access data there

You may need to write a bash shell script that accesses data stored alongside the script, while your current working directory might be elsewhere. In my case the shell script needed to use Node.js scripts stored next to the shell scripts -- the shell script acting to simplify running the Node.js scripts. The "data" to be accessed in this case is the Node.js scripts, plus the support modules required to run them. You may have other data like a list of hostnames or who-knows-what.

The basic outline is

Easily import your CSV data into MySQL with Node.js

It's convenient to import a CSV file into a spreadsheet to crunch numbers. CSV's (comma-seperated-values) and it's brethren (TSV, for tab-separated, etc) are widely used to deliver information. You'll see CSV downloads available all over the place, whether it's your stock broker or bank, or a government agency, and on and on. Spreadsheet programs like LibreOffice Calc offer direct import of these files, and then as a spreadsheet you've got a zillion tools available to crunch numbers, make graphs, etc.

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