When building network libraries for Node.js, as we do at work, one quite quickly comes by Node's Buffer type. A Buffer gives access to a memory region in a quite raw form, allowing to handle raw data and allowing to interpret binary streams. The Buffer interface predates ES6 TypedArrays and has some optimizations.

Two optimisations are notable:

For one the slice() method does not copy data, but returns a view on the underlying data. This makes it quite efficient to work on a window of the data, but when writing one has to be careful. Simple example:

const buffer = Buffer.from("hello"); …

IS NULL, IS NOT NULL, truthiness among other assertions on MySQL and PostgreSQL

People like to complain about JavaScript, how can one thing be equal to the other, i.e. null == undefined evaluates to true unless you use the triple equals ===. Other dynamic typed languages have its peculiarities, such as Ruby where 0 == true evaluates to true, the reason for Ruby is that considers 0 as a value and any value evaluates to true.

How about SQL? The answer is… it depends.

Which database are you using?

Some may be more forgiving, like MySQL doing casts for you all over the place, or more strict like PostgreSQL where you can only compare the truthiness of something of the same type.

I stopped freelancing on upwork in 2011. I used to be a part-time freelancer on upwork (previously known as oDesk) from 2008 to 2011 besides my full-time job. Since 2011, I have been developing my own Indie mobile apps which is a great success for me and in my career.

I am still earning very good passive income from my own portfolio apps, today I will discuss why I have started freelancing again.

1. Indie Developing

There is a saying:

If you walk alone you can go faster
If you walk in group you can go further

MySQL 8.0 and the Document Store highlight brand new client tools such as the Shell and Connector/Node.js, both providing a JavaScript implementation of the X DevAPI. Although, for most cases, the public interface tends to be similar on both (barring some small details), there is one notable exception.

The way you handle result sets in a Node.js app using Connector/Node.js is a bit different from the way you do it using an interactive session or a non-interactive JS script in the Shell.

Executing an operation in the MySQL server …

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First of all, thanks to everyone who attended my sessions at the recent Oracle OpenWorld and Code One in San Francisco. It was a great privilege to be allowed to make a number of presentations.

All of the workbooks and scripts from the hands-on labs (HOL) and the slides from the talks have been made available at OpenWorld’s and Code One’s session catalogues. You can download the files by using the OpenWorld catalog searching for my name or the session number (see below). Click on the download icon for each of the presentations you are interested in.

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The MySQL Development team is proud to announce a new version of the MySQL Shell which in addition to the usual bug fixes and enhancements to the existing components,  offers new features we expect are quite useful in your day to day work.…

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It can be hard to recall all the details of how a program and API work. The usual way to handle that is to look at the manual or a book. Another – and in my opinion – nice way is to have built-in help, so you can find the information without changing between the program and browser. This blog discuss how to obtain help when you use MySQL Shell.

MySQL Shell is a client that allows you to execute queries and manage MySQL through SQL commands and JavaScript and Python code. It is a second generation command-line client with additional WebOps support. If you have not installed MySQL Shell yet, then you can download it from MySQL’s community downloads, Patches & Updates in …

MySQL Connector/Node.js is a new Node.js driver for use with the X DevAPI. This release, v8.0.11, is the first general availability release of the MySQL Connector/Node.js 8.0 series.

The X DevAPI enables application developers to write code that combines the strengths of the relational and document models using a modern, NoSQL-like syntax that does not assume previous experience writing traditional SQL.

MySQL Connector/Node.js can be downloaded through npm (see https://www.npmjs.com/package/@mysql/xdevapi for details) or from https://dev.mysql.com/downloads/connector/nodejs/.

To learn more about how to write applications using the X DevAPI, see http://dev.mysql.com/doc/x-devapi-userguide/en/. …

MySQL Connector/Node.js is a new Node.js driver for use with the X DevAPI. This release, v8.0.9, is the third development release of the MySQL Connector/Node.js 8.0 series.

The X DevAPI enables application developers to write code that combines the strengths of the relational and document models using a modern, NoSQL-like syntax that does not assume previous experience writing traditional SQL.

MySQL Connector/Node.js can be downloaded through npm (see https://www.npmjs.com/package/@mysql/xdevapi for details) or from https://dev.mysql.com/downloads/connector/nodejs/.

To learn more about how to write applications using the X DevAPI, see http://dev.mysql.com/doc/x-devapi-userguide/en/. For more …

MySQL Connector/Node.js is a new Node.js driver for use with the X
DevAPI. This release, v8.0.8, is the second development release of the
MySQL Connector/Node.js 8.0 series.

The X DevAPI enables application developers to write code that combines
the strengths of the relational and document models using a modern,
NoSQL-like syntax that does not assume previous experience writing
traditional SQL.

MySQL Connector/Node.js can be downloaded through npm (see
https://www.npmjs.com/package/@mysql/xdevapi for details) or from
https://dev.mysql.com/downloads/connector/nodejs/.

To learn more about how to write applications using the X DevAPI, see
…