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Tips & Guides to Help You Get the Tech Job You Want
Blog about technology, virtual machines, vmware, Infrastructure and Operation, DevOps
Cloud Computing
Career Advice
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tech  tutorials  guides 
4 days ago by leew680
The Node.js Event Loop, Timers, and process.nextTick()
The event loop is what allows Node.js to perform non-blocking I/O operations — despite the fact that JavaScript is single-threaded — by offloading operations to the system kernel whenever possible.

Since most modern kernels are multi-threaded, they can handle multiple operations executing in the background. When one of these operations completes, the kernel tells Node.js so that the appropriate callback may be added to the poll queue to eventually be executed. We'll explain this in further detail later in this topic.
javascript  nodejs  article  guides 
4 days ago by davidgasperoni
Bite size command line!
Puzzled by ps? Flummoxed by find? Always wondered about awk? The Bite Size Command Line zine is here to help! Every page takes a command line tool and explains the most important things to know about it. What's in the zine. You'll get a 24-page PDF that you can download, read on your computer, and print into a booklet if you want to! Commands you'll learn about: grep, find, xargs, awk, sed, tar, ps, top, sort, uniq, head, tail, less, kill, cat, lsof, and various SUPER USEFUL bash tricks. Print directions: The "print version" is formatted so that when you print it on your printer, it will fold correctly. (printing it out and giving copies to your friends is totally allowed! :)) You'll need to: * make sure it's set to "landscape". * print double sided. * choose "long edge" (not "short edge"). You can find me on Twitter at and my email address is
terminal  guides  pdf  download 
5 days ago by davidgasperoni
Electronics 2000 - Hobby Electronics - Software, Calculators, Technical Data, Pin-outs, Beginners Guide, Forum, Links...
Electronics 2000, for electronics hobbyists, engineers and students. Online calculators, software downloads, technical data, beginners guide, pinouts, forum, links and more
electronics  Resources  Reference  Guides  Howto  Technical  Pinout  OnlineCalculator  Software  forum 
5 days ago by abetancort
Getting started with Onion Omega2 and Golang – Alvaro Viebrantz – Medium
The Omega2 is a powerful device made by the people of It's basically a computer that comes packed with built-in Wi-Fi, running a Linux Operating System based on OpenWRT, has many general purpose inputs and outputs, and comes with a powerful processor, all of this in a really small package, hoping that you build awesome IoT projects with it. The board is based on the MediaTek MT7688 processor (with a MIPS architecture) running at 580Mhz, comes with 64MB of RAM and 16MB of flash storage. It also has a version called Omega2 Plus that comes with the double of ram and storage. You can see more details at the Onion docs. I will show you here how to use Go programming language (or Golang) to program the Omega2. It's a simple, high-level language, with plenty of packages that can be used in your projects, awesome support for cross compiling and a small footprint. Our demo project, when compiled, generates a binary file just for the Omega architecture with a size of just 1MB, using external packages and more. So let's get started.
golang  go  onion  iot  internetofthings  onionio  walkthroughs  guides  tutorials 
6 days ago by dlkinney
Render Props - React
The term “render prop” refers to a simple technique for sharing code between React components using a prop whose value is a function.

A component with a render prop takes a function that returns a React element and calls it instead of implementing its own render logic.
react  programming  guides 
6 days ago by liberatr
D3 is not a Data Visualization Library – Elijah Meeks – Medium
along with key functionality that lets you do data visualization, D3 also consists of other functionality that is only tangentially related to data visualization.
javascript  visualization  dataviz  guides 
11 days ago by liberatr
The Perfect Wall | Building Science Corporation
The perfect wall is an environmental separator—it has to keep the outside out and the inside in. In order to do this the wall assembly has to control rain, air, vapor and heat. In the old days we had one material to do this: rocks. We would pile a bunch or rocks up and have the rocks do it all. But over time rocks lost their appeal. They were heavy and fell down a lot. Heavy means expensive and falling down is annoying. So construction evolved. Today walls need four principal control layers—especially if we don’t build out of rocks. They are presented in order of importance:

a rain control layer
an air control layer
a vapor control layer
a thermal control layer

A point to this importance thing here, if you can’t keep the rain out don’t waste your time on the air. If you can’t keep the air out don’t waste your time on the vapor.
construction  guides 
14 days ago by liberatr
React & Redux in TypeScript (@piotrwitek)
This guide is a living compendium documenting the most important patterns and recipes on how to use React (and it's Ecosystem) in a functional style with TypeScript and to make your code completely type-safe while focusing on a conciseness of type annotations so it's a minimal effort to write and to maintain types in the long run.
redux  react  typescript  guides 
14 days ago by shannonlucas

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