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tar + gz -> multi core (via pigz)

tar cvf - *.xml | pigz -v > xml.tar.gz

#tar #gz #pigz #archive #core #commands #linux

MySQL 5.6 implements an additional set of functions that can help create geo-enabled applications with MySQL. Alexander Rubin details some mobile app uses.

#mysql spatial extentions #mysql

Magnificent app which corrects your previous console command.

#cli #python

The OpenSSL docs are the official guide to OpenSSL options. But external, task-based documentation is often used instead, particularly for the task of making a Certificate Signing Request to get an SSL certificate.

Most guides to making a Certificate Signing Request are out of date.

#linux #ssl

There's a boom taking place in the field of image detection. If you're an artist, now is as great time to learn about the technology so you can take advantage of falling prices and new technology.

#image hashing #fingerprinting

Photobooth is supported in all browsers that support navigator.getUserMedia.

#javascript #jquery #camera #video

HornetsEye is a real-time computer vision library for the Ruby programming language. HornetsEye is maybe the first free software project providing a solid platform for implementing real-time computer vision software in a scripting language. The platform potentially could be used in industrial automation, robotic applications, and human computer interfaces.

#ruby #video #graphics

Need to monitor a Linux-based server from a Windows-based computer? It's easier than you might think.

#.net #ssh #linux

Can you still remember the first program you ever wrote? The first program you ever wrote in your current favorite language? How far you've come and how much you've learned since then? I think it's...

Fun with Ruby

#ruby

Play tic-tac-toe in your Terminal

Fun with Ruby

#ruby

Let's look at how to to utilize image fingerprinting to perform near-duplicate image detection.

#python #image hashing #fingerprinting

codelinks

function addEvent(elem, event, fn){ if(elem.addEventListener){ elem.addEventListener(event, fn, false); }else{ elem.attachEvent("on" + event, function(){ return(fn.call(elem, window.event)); }); } }

And then you can use it like this, for example, to put the cursor at the end of the input text.

#javascript

Some of the hardest problems a Java Developer will ever have to face are classpath errors: ClassNotFoundException, NoClassDefFoundError, Jar Hell, Xerces Hell and company.

#jave #jruby

Most often noted is true parallelism on multi-core processors (with no global interpreter lock). We’ve all already heard and some of us know first-hand that JRuby is fast.

Instead here, we would like to cover a less mentioned fact: what JRuby brings to the Ruby community.

#jruby

#mysql #ruby

IF YOU ONLY REQUIRE a few attributes from a table, rather than instantiating a collection of models and then running a .map over them to get the data you need, it’s much more efficient to use .pluck to pull back only the attributes you need as an array. The benefits are twofold: better SQL performance and less time and memory spent in Rubyland.

#ruby #rails #active record

Python in 4 hours.

#python

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