Benchmarkjs : a very small tool to compare speed

By LiBePosted on Wednesday 29 November 2017Cat G33k, ProgrammesLeave a comment

Wanting to quickly figure out which way is the fastest ? Want to see median times in µs ? Download that module : https://gist.github.com/libetl/952e026f889be1cc7cdb3b42767ea845 And call benchmark that way : (copy/paste that code, change 'forThisWork' - what to measure, 'theContestants '- who to measure, and 'seedInit' - what data should it use) benchmark({theContestants: {naive: seed… Read More »

How to crash javac (jdk8) for free

By LiBePosted on Friday 13 October 2017Cat G33k, ProgrammesLeave a comment

This simple snippet can cause javac (from the JDK 8) to crash : public class TestExtendConsumer { @FunctionalInterface public interface NumberConsumer< E extends Number> extends java.util.function.Consumer< E>{void accept(E number);} private static < E extends Number> void extend(E number) { System.out.println(number); } public static void main(String[] args) { NumberConsumer numberConsumer = TestExtendConsumer::extend; numberConsumer.accept(1); } } Impressive.… Read More »

Raw js imported as a real module

By LiBePosted on Saturday 16 September 2017Saturday 16 September 2017Cat G33k, ProgrammesLeave a comment

Modern javascript libraries are all made of modules. They can be plugged inside any project : web, server, batch or program. That would be really straightforward to include any dependency as a single line of configuration inside a package.json file. Unfortunately, some teams want to expose web javascript code in a raw format : no… Read More »

How to parse a phone number

By LiBePosted on Thursday 31 August 2017Tuesday 5 September 2017Cat G33k, ProgrammesLeave a comment

There are tons of different writings for a phone number. The simplest one is the spoke one. A list of numbers that can identify several targets in the world. It is not unique because of the country indicator that is used for disambiguation, what we call the "international format". Even after that, behind a phone… Read More »

Tableau de visualisation SNCF (sorry, post in french only)

By LiBePosted on Monday 31 July 2017Wednesday 2 August 2017Cat G33k, ProgrammesLeave a comment

Je dois dire que je suis un habitué de l'app fusion de la sncf sobrement appelé "SNCF" https://play.google.com/store/apps/details?id=com.sncf.fusion. Et rien à dire, elle est plutôt complète puisqu'elle offre la possibilité de visualiser les horaires par gare ou par ligne, où que l'on se trouve. Elle permet aussi d'avoir toutes les infos "publiées" (donc pas toutes… Read More »

How to split an input text into arguments

By LiBePosted on Friday 30 June 2017Friday 30 June 2017Cat G33k, ProgrammesLeave a comment

Hi dear Apache commons-cli lover, You know certainly how to parse a list of arguments into options. But possibly you may want to provide the same as a pure JVM method ; what about the : callWith(String theArgs) ? Might sound impossible with a commons-cli library. You probably have thought about splitting around whitespace tokens,… Read More »

react & react native at once : 1 app = 1 program ?

By LiBePosted on Wednesday 31 May 2017Wednesday 31 May 2017Cat G33k, ProgrammesLeave a comment

One question everyone is likely to ask one day, while using the react framework, is : "can I use the same app on a browser AND on a mobile device without rewriting the app ?" In other words, is the principle "write once, run everywhere" respected ? The short answer is no, and the longer… Read More »

Webpack2 : an example, a real one ?

By LiBePosted on Thursday 27 April 2017Thursday 27 April 2017Cat G33k, ProgrammesLeave a comment

"Has this ever happened to you ?" -> You work in a non open minded company, or a company willing to make some progress, but behind in tech. -> The front part of your stack is in (Java/PHP/Python/You name it) + (naive javascript or some former trendy framework like jquery / backbone / handlebars), and… Read More »

Write Java code that even your CEO can read (https://github.com/libetl/ideaomatic)

By LiBePosted on Wednesday 29 March 2017Wednesday 29 March 2017Cat G33k, ProgrammesLeave a comment

Were you trying to write boilerplate code in Java lately ? List Read More »

How to colorize an xml by code

By LiBePosted on Thursday 2 March 2017Thursday 2 March 2017Cat G33k, ProgrammesLeave a comment

The following class will help you to do that. You can easily transform this : <?xml version="1.0" encoding="UTF-8"?> <kcfg xmlns="http://www.kde.org/standards/kcfg/1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.kde.org/standards/kcfg/1.0 http://www.kde.org/standards/kcfg/1.0/kcfg.xsd"> <kcfgfile name=""/> <group name="com.librehat.yahooweather"> <entry name="woeid" type="String"> <default></default> </entry> <entry name="interval" type="Int"> <default>60</default> </entry> <entry name="celsius" type="Bool"> <default>true</default> </entry> <entry name="fahrenheit" type="Bool"> <default>false</default> </entry> <entry name="ms" type="Bool"> <default>false</default> </entry> <entry name="kmh" type="Bool">… Read More »