Tag: lang:en - Articles:
This article aims to describe a tricky situation that can often occur when using Promise.all(), and a simple solution to this problem. The context The MDN page for Promise.all() provides the following description of this function: The Promise.all() static method takes an iterable of promises as input …
Read More
A very short blog post to share some minimal code snippets on how to quickly and easily setup Gitlab CI pipelines to run static code analysis tools on C++ code and Jenkins pipelines (or any Groovy code). Linting C++ code with clang-tidy clang-tidy is a clang-based C++ linter tool that …
Read More
Pylint is a great static code analyser for Python code. I have been using it for several years, in various projects, and it's simple to use yet very powerful. I even contributed to Pylint by submitting a new rule a few years ago : implicit-str-concat. For an introduction to Pylint, you …
Read More
I wrote my latest post on fpdf2 almost a year ago. As we just released a new version, v2.7, this is the time to mention some recent additions to this library! 😊 This article will present some of the major features introduced between v2.5.3 & v2.7.3 of …
Read More
Illustration from realpython.com The other day, while working on fpdf2, I used @dataclass, a nice decorator that came in the standard library with Python 3.7, to quickly define a class that mostly stored data. Then a question came to my mind: is the __slots__ memory optimization compatible with …
Read More
Escaping the madness par Martina Lexi - CC BY-NC-SA Psi*Run de Meguey Baker, traduit en français par Alexis Lamiable, est un jeu que j'adore. Je l'ai déjà évoqué ici à plusieurs reprises. La semaine dernière, j'ai eu l'occasion de faire une session de ce jeu de rôle avec quelques amis …
Read More
Following last week animated PDF adventure, I have been reading a series of one page dungeons... And yesterday I had the opportunity to play the best one in my opinion: The Sky-Blind Spire by Michael Prescott. It has everything I love on one page: a maze to explore, mysteries to …
Read More
Last week, while translating John Harper's micro-TTRPG World of Dungeons: Turbo Breakers, I discovered the wonderful world of one page dungeons, starting with Michael Prescott splendid production at trilemma.com and also the yearly One Page Dungeon Context. While crawling through the OPDC 2021 entries, I discovered a great map …
Read More
(English speakers : go to BoardGameGeek to find the variant in English) Rumble in the Dungeon est ma dernière belle découverte ludique ! C'est un jeu très court (20-30 min par partie) pour 3 à 6 joueurs, alliant hasard, tactique et un peu de bluff, avec la possibilité d'enjoliver chaque action avec …
Read More
Recently at work, at SNCF Connect & Tech, we needed to expose some static documents as HTTP endpoints: a GET /version that would provide some information about the application version as JSON, and a GET /openapi/yaml that would return the OpenAPI 3 specification of our HTTP API as YAML. We …
Read More
Today I made a small addition to a Javascript library I sometimes use to generate nonograms. This tool can now build a solvable grid in the form of a valid QR Code that, once decoded, reveals some text: The nonogram size will depend on the hidden text size, but even …
Read More
fpdf2 is a simple & fast PDF creation library for Python that I have been maintaining since mid-2020. In this article, I'm going to present some of the new features that landed since my last post on the subject. Hence, this will cover versions 2.5.0, 2.5.1 & 2 …
Read More
There are some notable recent addition to my page Images sous licences libres: Meg James - mostly CC BY-NC-SA - fantasy & furries a queer agender digital artist in southeast Washington State, mostly doing art and comics Dead man in a dead land She came from the bog Compliments to the chef Summer …
Read More
I recently discovered some really beautiful pieces of generative art on r/generative. In the same spirit as a precedent article on glitch art, I want to share some of my favorites: Everything's Fine by Kenny Vaden Genuary Day 25 - Perspective by tasty_plots Semi epihyperderpflardioids by piterpasma - HD 720p version …
Read More
I very recently joined , and it seems great! Even if its new system makes difficult to talk to new people. One things that annoys me a little though, is that I often get matches for people too far away from where I live, even with the distance filter set in …
Read More
(English speakers : go to BoardGameGeek to find the variant & companion web-app for this excellent game) 5 Minute Dungeon est une très belle découverte de Noël ! Il s'agit d'un jeu coopératif basé sur la vivacité, avec comme thématique l'exploration d'un donjon de fantasy (façon dungeon-crawler / PMT). Pourquoi c'est bien ? Parce …
Read More
Last month, I realized late that October was hacktoberfest month! This online event is a month-long celebration (October 1-31) of open source software run in partnership with different software companies, with a focus on encouraging contributions to open source projects. While I participated in the 2019 edition as a contributor …
Read More
The other day, while watching La Carte aux trésors at my elderly neighbor's house, I casually played peg solitaire on a board she has. After many failures at trying to get rid of all pawns but one, I started to wonder about the mathematics & algorithmics behind that game... Back home …
Read More
Ce blog voit l'apparition d'une nouvelle page permanente : Images libres de droits. Cette page recense des site web, des illustrateurs, des icônes et des polices de caractères libres de droits. Depuis octobre 2018, j'ai rassemblé une liste d'artistes dont j'apprécie le travail et qui placent leurs œuvres sous licence Creative …
Read More
I have been amazed recently at the diversity of contributors on the fpdf2 project, coming from all around the world! Then I thought it would be nice to visualize this diversity by building a world map of all contributors locations. There it is: Click on the image to access an …
Read More
Today I finally took the time to put up a live demo website for Hesperides! https://hesperides.herokuapp.com Hesperides is an open source tool dedicated to configuration management: it stores applications properties and mustache templates for configurations files. It is strongly hierarchized based on few main concepts: modules, applications …
Read More
fpdf2 is a minimalist PDF creation library for Python that I am maintaining. With the release yesterday of its v2.4.0, I'm going to present some of its notable new features since the latest minor version. https://github.com/pyfpdf/fpdf2/ Doc: https://pyfpdf.github.io/fpdf2/ JPEG images …
Read More
When was the last time you wanted to play again an old video game? Personally, I don't usually re-play video games. I'm always more tempted to try a new interesting one found on WarpDoors. I have the impression that this is common to most video game players, whether the prefer …
Read More
Undying Dusk is a video game in a PDF format, with a gameplay based on exploration and logic puzzles, in the tradition of dungeon crawlers. A curse set by the Empress keeps the world in an eternal dusk. You have recently found shelter in an eerie monastery. Featuring: ~ 200 000 …
Read More
(English PDF rules at the bottom) Il y a quelques années, lors du festival Paris est Ludique, nous avions testé une petit jeu qui nous avait bien plu : La Route Des Vignes de Eilif Svensson & Kristian Amundsen Østby, édité en France par Matagot. Pour une description du jeu, je vous …
Read More
Today, I am happy to announce version 2.3.0 of fpdf2, code name: Unbreakable! https://github.com/pyfpdf/fpdf2/ Doc: https://pyfpdf.github.io/fpdf2/ Why Unbreakable? As a tribute to M. Night Shyamalan movie Because using fpdf2, your Python code can never break! ... Just kidding, I would be …
Read More
fpdf2, the library I mentioned in my previous post, cannot parse existing PDF files. However, other Python libraries can be combined with fpdf2 in order to add new content to existing PDF files. This page provides several examples of doing so using pdfrw, a great zero-dependency pure Python library dedicated …
Read More
Today, I am happy to announce a new version 2.2.0 of fpdf2 ! https://github.com/pyfpdf/fpdf2/ Doc: https://pyfpdf.github.io/fpdf2/ During the last few months, I contributed a few improvements to fpdf2, David Ankin fork of PyFPDF, the user-friendly Python library to generate PDFs: from …
Read More
Linkback protocols are an old breed. They were born in a time where MySpace, Wikipedia & WordPress had just been launched, and Friendster was more popular than this new website called Facebook. Diagram source: PPRuNe article on linkbacks The latest linkback protocol, Webmention, is relatively recent though, as it became a …
Read More
The FOSDEM'20 (Free & Open Source Developers’ European Meeting) conference is: a free event for software developers to meet, share ideas and collaborate It took place last week-end at the Université Libre de Bruxelles, and I had the chance to attend it. Sincere thanks to my employer, oui.sncf, for financing …
Read More
(English version below) Il y a trois ans, j'évoquais sur ce blog quelques variantes pour le jeu de société Pandémie. Voici le moment de vous en présenter deux que j'ai confectionné récemment, et dont les playtests étaient suffisamment amusants pour que je les mette en page, afin de les partager …
Read More
At work, we needed to retrieve the full list of jobs a given Jenkins instance was hosting. Our first solution was to use the jenkinsapi Python package: import xml.etree.ElementTree as XmlElementTree from jenkinsapi.jenkins import Jenkins def get_all_jenkins_jobs(server_url): jenkins = Jenkins(server_url, lazy=True, timeout=30, username=os …
Read More
Iframes not supported. Click on the link below to access the graphs. The iframe above displays some graphs I've built last week, in order to get some insight on some GitHub projects issues & pull requests evolution. They are directly inspired by nf-core project activity statistics. Click here to open those …
Read More
Last week-end was the 30th anniversary of one of my best friends. For the occasion, I wanted to craft him a small puzzle with a custom secret drawing, as a reminder of some shared memories. I came upon Erik & Martin Demaine's creation for CSAIL 2006, a print & play puzzle based …
Read More
(scroll below for the English version) Hier, en compagnie de trois fidèles playtesteurs vétérans, j'ai eu l'occasion de jouer pour la première fois à Dungeon Heart, mon coup de cœur de la Pamphlet Dungeon Jam. Très franchement, le jeu était carrément à la hauteur de mes attentes, et je crois …
Read More
Yesterday I was crafting some puzzles for my girlfriends, and I was looking for letter-based ones where I a secret word would be revealed once solved. With this same goal, I had already once worked on an open-source JS word search generator: https://lucas-c.github.io/wordfind/ (pour les francophones …
Read More
Over the past years, on software programming projects where my end users where developers (other than myself or my team), I have tried to follow the advice of this website : keepachangelog(.com) A changelog is defined by Wikipedia as : a log or record of all notable changes made to a …
Read More
In June this year, Sean McCoy published a tabletop RPG called Mothership. It has recieved tons of positive reviews, including /r/rpg December's Game of the Month award: It's a d100 sci-fi/horror system, perfect for running Alien or Event Horizon, but it is most importantly exceptionally well designed. Every …
Read MoreI just added a favicon to this site, representing a glider of Conway's Game of Life. This GIF was made with a Python script. The source code is on GitHub, and uses Zhao Liang's gifmaze.py. Feel free to reuse the code to make you own favicons 😉 article img { transform …
Read More
Almost a year ago, GitHub introduced security alerts. They are an awesome feature. They function as notifications you receive whenever a vulnerability affecting one of your project dependencies. But long after receiving a notification, how to list all security alerts affecting your repositories ? I didn't found an out-of-the box solution …
Read More
Some time ago, I used the overblog platform in order to create a blog for a long trip in Ireland. Despite being sometimes very slow, it was overall a good platform, very easy to grasp for beginners. The blog is now old and unused, but before destroying it I wanted …
Read More
Being currently on a bike tour in Europe for several week, without computer nor smartphone, I don't have the opportunity to post much on this blog. Still, I'd like to mention a discovery I just made from an Internet café here in Budapest : the Hearts and clubs website. Curated by …
Read More
Yesterday I've stumbled upon a very surprising bug in some Python 2 code, related to the use of the __del__ method in a vendor library we employ at work. Here is some minimal code that reproduces the issue I met: class MyClass: def __init__(self): raise RuntimeError('Woops') def __del__ …
Read More
When I migrated this blog to Pelican, I noted one thing that I missed from Ghost: tags autocompletion, to help reusing tags I already defined in other articles. Because nowadays I mostly use Notepad++ or vim to write my blog posts, I found out an easy solution that works for …
Read More
At work we have a component not yet migrated to Python 3, and we recently had some difficulties diagnosing a problem with the MySQL connector. Because we were catching the mysql.connector.errors.Error and raising a custom exception, we were loosing the underlying stacktrace and hence couldn't troubleshoot the …
Read More
flask httpie requests simplejson botocore scrapy docker-compose ansible What are those diagrams ? They show dependencies between the internal modules of various well-known Python libraries. They goal is to provide a global overview of a Python project architecture, as a map of modules & packages, the top-level code abstractions. Note that all …
Read More
This week I discovered the fantastic glitch art Reddit community (for a little more context on glitch art, wikipedia has a page). These are the pieces I love the most (click on them to find the source): This one above reminds me of The Great Wave off Kanagawa. Like many …
Read MoreOn my personnal server, I used to send myself alerts by email using the handy standard mail command. However, recently it appeared that my server became categorized as "spammer" by some online service providers, due to the alerts frequency (a little bit more than one per day). Hence, I got …
Read More
Daniel Linssen, aka managore, is a fantastic indie game developer. I already mentioned one of his games, HopSlide, in a previous blog post (FR). Now that it's clear that I am totally unbiased about this incredible game maker, lets talk about his latest games ! WalkieTalkie This first one simply amazes …
Read More
In the last years, cmder became my default console when I needed a cmd.exe-compatible Windows console. Very often, I have a cmder window with a set of tabs under my standard Windows user, and another that I launch as admi, to switch on/off some services, e.g …
Read More
This post may just look like a good excuse to show some holiday pictures (and really it is), sorry about that :) I was in London last week, and I had the chance to make a tour of some great street art spots around Liverpool Street station, thanks to Fabrizio Gallozzi …
Read MoreI ended up not using this code, but it may be useful to others: mock_setup_provider.py: import sys from unittest.mock import Mock class MockSetupProvider(Mock): def __init__(self, *args, **kwargs): super().__init__(*args, **kwargs) self.captured_setup_requires = set() def setup(self, *args, **kwargs): self.captured_setup_requires.update(kwargs.get('setup_requires')) setup_extractor …
Read More
Hello all. This is an open request : does anyone know about equitable non-smart phones or laptops, ideally long lasting and for the laptops: easily repairable with open-source componants ? I know about Fairphone, but I couldn't find anything similar for simpler "feature phones". By the way, I stumbled upon their cost …
Read MoreSince Spring 4.1, it is really easy to enable JSONP on an API controller: @RestController @RequestMapping(value = "/") public class MyController { @ControllerAdvice static class JsonpAdvice extends AbstractJsonpResponseBodyAdvice { public JsonpAdvice() { super("callback"); // name of the query parameter to use } } @RequestMapping(value = "/", method = RequestMethod.GET) public MyAPIResult getStuff(...) { ... } } There is no RFC …
Read More
What do you think of the following innocuous Python code ? from gevent import monkey monkey.patch_all(thread=False, select=False) import requests requests.get('http://i-do-not-exist.com') print('THIS WILL NEVER BE PRINTED !!!') Guess what ? The string message will never get printed :( Simply remove the monkey.patch_all line and you'll …
Read More
Last week, my father asked me if I could make a backup of an old lovely voicemail message he had, recorded by my sister when she was a kid. I wrote a short Python script to accomplish this using Twilio: twiml_url = 'https://handler.twilio.com/twiml/EH9515e9e0d2fb81f27d75a493225ae703' client = Client(os …
Read More
In this blog post, I'm going to demonstrate how to reuse WiseMapping HTML+JS rendering engine to easily visualize... text-based mindmaps like this one have many benefits they are readable as-it-is they don't require any tool to be edited [they follow the UNIX tenets](http://www.ru.j-npcs.org/usoft …
Read More
This week I wrote a small Python script, that can generate a mindmap from a simple indented text input like this: Winter december january february Spring march april may Summer june july august Autumn september october november The command: ./graphviz_mindmap.py seasons.txt. The results, with various layout parameters: Another …
Read More
Recently I lost a lot of time on this. Hence I want to share a working solution, even if i cannot take the time to detail the issue. I'm taking about writing reusable code for Jenkinsfiles : https://jenkins.io/doc/book/pipeline/shared-libraries/ One cannot simply use Groovy HTTPBuilder, because …
Read More
Today I've been struggling to understand why this does not work in Firefox, but is OK in Chrome: Here …
Read More
I love reveal.js. I've been using it for years. But the other day, I was badly bitten by its requirement on a local HTTP server. What happenned was that I was invited to make a short presentation in a youth and cultural center. I had prepared some slides with …
Read MoreDue to a long standing bug, no history file will be kept of the commands you enter in an interactive shell when using a Python 3 virtualenv. I found out a simple workaround. Simply put the following in your ~/.pythonrc : import atexit, os, readline, sys if sys.version_info >= (3, 0 …
Read More
Today, I did some tests on a server where an old version of our project was deployed. At some point, I needed to identify which version of the code was there, and I wrote a pretty shell function to figure this out. Yeah, I know what your thinking : there must …
Read More
Last week, I made up a basic TCP server in Python, to receive log lines. To split log lines, I used the ascii line feed ascii character : \n aka 0xa in hexadecimal. But then I wondered : could this byte appear elsewhere in the UTF8-encoded strings of text I was sending …
Read More
...in just one command : cd path/to/your/git/repo cat .git/hooks/pre-rebase #!/bin/sh echo -n \$'\x1b[36m' # start coloration (cyan) curl -s https://raw.githubusercontent.com/jenkinsci/chucknorris-plugin/master/src/main/java/hudson/plugins/chucknorris/FactGenerator.java | sed '1,/FACTS = {/d;s/^ \+"//;s/"..\?$//;/^$/,$d' | shuf …
Read MoreIn any UNIX shell, the following will always work out of the box: browserify src/main/lib/js/*.js > out-bundle.js But of course, not under Windows. And browserify does not accept directory names as primary parameter, nor wildcard globbing patterns. There is a pending issue & pull request aiming to …
Read More
Did you ever got this infamous error message in Firefox debug console (with CSS error messages enabled) ? downloadable font: Layout: DFLT table doesn't satisfy the spec. for script tag DFLT (font-family: "MyBeautifulFont" style:normal weight:normal stretch:normal src index:1) source: http://W.X.Y.Z/fonts/myfont …
Read More
Python generators are awesome. Why ? their syntax is simple an concise they lazily generate values and hence are very memory efficient bonus point: since Python 3 you can chain them with yield from Their drawback ? They can be iterated only once, and they hide the iterable length. I took an …
Read MoreA year ago, I built a small JS lib using D3.js to visualize JSON-defined genealogy trees. At the beginning of the year, I added a new feature using flex-calendar and moment-ferie-fr : a birthday calendar using the same JSON genealogy definition and miniature images. I added this calendar to the …
Read MoreFirst, lets mention Git Bash (aka msysgit) : the old version was a PITA to extend with additional packages (e.g. adding common C libs like libxml), and the new one (renamed Git for Windows), is based on MSYS2, but does not include a package manager. Hence, we were left with …
Read More
... and the standard UNIX tool zipinfo cannot display them ! So here is Python one-liner to extract them, and other useful meta informations: python -c "import json, sys, zipfile; json.dump([{k: str(getattr(i, k)) for k in zipfile.ZipInfo.__slots__} for i in zipfile.ZipFile(sys.argv[1]).infolist …
Read MoreI'm not really crazy about Yeoman's grunt-usemin : I find painful the way it enforces a unique pipeline, with its preliminary useminPrepare task and :generated targets. But on the project I'm working on, we made the choice to use it early on, and we're sticking with it for now. And this …
Read MoreSay you are generating a colored diff output with the standard difflib Python package: diff = difflib.ndiff(file1_lines, file2_lines) print('\n'.join(diff)) Now, I'll show you how to write a simple color_diff function that you can use to color your diff like this: diff = difflib.ndiff(file1_lines, file2_lines) diff …
Read More
Simply add the following class to your project. It will be automatically registered at start-up if you use the @EnableAutoConfiguration annotation : @ControllerAdvice // Makes this the default behaviour of all controllers @ConditionalOnProperty(prefix = "app", name = "disable-default-exception-handling") class GlobalControllerExceptionHandler { @ExceptionHandler(Exception.class) // Catch any exception @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR) // Returns an error code …
Read MoreDeux lectures complètement décorellées à partager: Aujourd'hui, pour justifier leurs [les comédiens] droits, on parle d'économie. En 2004, le rapport Guillot remis au ministre de la culture et de la communication, dans l'émotion suscitée par l'annulation du festival d'Avignon, souligne qu'en 2003 "la valeur ajoutée dégagée par le secteur du …
Read More
This evening I faced a really annoying bug: while able to exit Family View by entering my PIN in Steam.exe, I could not do so when trying to access the Steam website. I simply could not pass the page "Adults, enter your PIN below to exit Family View." Neither …
Read More
First, install PHP debugging extensions for gdb, for example: debuginfo-install php-5.6.8 # if you use yum aptitude install php5-dbg # if you use aptitude Then simply: php_version=5.6.8 php_script_pid=$(pgrep -f $php_script_name) curl https://raw.githubusercontent.com/php/php-src/PHP-$php_version/.gdbinit >> ~/.gdbinit gdb -p …
Read MoreThe timeit module is useful for micro benchmarks, but does not allow to measure execution time of large snippets, as it requires the code tested to fit in a string. Hence, I went looking for a context or decorator-based solution. And I found this bug report commented by Guido van …
Read More
I've lost quite some time on this error recently : Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaAutoConfiguration.class]: Invocation of init method failed; nested exception is java.lang.AbstractMethodError: org.hibernate.jpa.boot …
Read MoreJust some handy accessors for the brower console : var myScope = $('#directive > select.or').scope() var $rootScope = $('body').scope() // if has the 'ng-app' attribute var myController = $('#directive > select.or').controller() var injector = $(document.body).injector() var myService = injector.get('myServiceName') And there are 3 handy pre-commit hooks : - repo: local hooks …
Read More
Pourquoi, mais pourquoi faut-il 3 lignes en Java pour juste extraire un groupe d'une expression régulière qui "match" ??? Matcher matcher = Pattern.compile("o?k(b|i)s+").matcher("kiss"); matcher.matches(); assert matcher.group(1) == "i"; En Python: assert re.match("o?k(b|i)s+", "kiss").group(1) == "i …
Read More
I'd like to introduce you to an awesome git companion : pre-commit hooks by Yelp. Git hooks are scripts that git executes before or after events such as: commit, push, and receive. Git hooks are a built-in feature, but git does not offer much support for them: if there is a …
Read MoreI recently worked on a short website project using Django & Heroku. It was my very time using this Python framework, and I really liked it ! This is a compendium of tips & tricks that I, as a Django beginner, found quite useful : Django enhanced shell To install it : pip install django-extensions …
Read More
Die shell script, DIE ! In this post, I'll show how easy it ease to convert fragile shell scripts to Python scripts, using sh.py. I'll use as an example a simple script to check your HTML code from the command-line, using the W3C validator. Now you ask me, why the …
Read MoreSometimes, it's useful to print some source code on paper. And PDF is a very common file format, that you can be sure your printer will accept, and that will let you preview the final page layout. But how to quickly perform syntax-coloring and export to PDF ? I've been experimenting …
Read More
Disclaimer: this post was heaviliy inspired by the 2 following gists: color_log.py using termcolor recipes colorlog.py using colorama I loved the simplicity of the first, not having to manipulate any of the logging internal API, but I prefer colorama over termcolor. Without further ado, there is my solution …
Read More
In a nutshell: SUN=$SAUCE_USERNAME; SAK=$SAUCE_ACCESSKEY curl -u $SUN:$SAAK https://saucelabs.com/rest/v1/$SUN/jobs?format=csv \ | perl -wpe 's/\r$//' \ | xargs -I{} curl -u $SUN:$SAK -X DELETE "https://saucelabs.com/rest/v1/$SUN/jobs/{}"
Read More
Pytest is a very complete test framework for Python. I like how you can write a basic unittest.TestCase and the py.test test runner command will inject all its magic at runtime, without you having to directly import anything: awesome separation of concerns. This modularity comes at a cost …
Read MoreSince July 2014, Substack great cross-browsers testing tool testling has been unavailable. Today I was looking for an alternative to use with ecovoit, my carpooling search engine. Saucelabs is a very interesting solution, and is free for open-source projects. Now I found 2 tools to easily launch your Javascript TAP …
Read More
Under Windows, CPython is shipped with a very useful py command. PEP-397 describes in details its behaviour, and its C implementation can be found in the CPYthon Mercurial repository. There has already been a lenghty discussion in the "python-ideas" mailing list to write a Linux equivalent. I agree with what …
Read More
A month ago, I wanted to automate queries to a website that is using the PHPSESSID cookie to keep track of sessions. I struggled a lot and couldn't find any documentation covering the behaviour I was observing. But yesterday I finally found a solution ! In hope it could help others …
Read More
Consider the following Python expression: print("".join(set("ABCDE"))) What do you think it produces ? Not necessarily "ABCDE". Right, but you would expect the result to be consistent, isn't it ? $ for i in {1..3}; do python2.7 -c 'print("".join(set("ABCDE")))'; done ACBED ACBED ACBED Great ! ... But with …
Read MoreThis post is only relevant to you if you use browserify. For a good introduction to this powerful Javascript bundling tool, check this doc. First of all, I'd like to take my hat off to James Hallyday and Peteris Krumins who have built such amazing tools as browserify, testling and …
Read MoreI'm happy to introduce you with genealogic-d3, a Javascript visualization library to nicely display genealogy trees that I've been working on during the past 3 days. I'm quite satisfied by the result. You'll find a live demo you can play with at https://chezsoi.org/lucas/genealogic-d3/skywalker.html I …
Read MoreInspired by this tweeter post by Marcus Lagergren and the JS1K competition, here is a valid Javascript code snippet for you obfuscated code lovers: ｰ=!+[]+!+[]+!+[]+!+[],ߺ=ｰ+ｰ,ǀ=ߺ+ߺ,ꓹ=!+[]+[],ǃ=!+[]+!+[]+!+[],ᚐ=ꓹ[+[]],ꓹ=ᚐ+ꓹ[ǃ]+(![]+[])[ǃ]+ᚐ,ᚐ=/,/[ꓹ]+[],ꓹ=ǀ+ߺ+!+[]+!+[],ꓹ=ᚐ[ǃ]+ᚐ …
Read MoreThis post aims to introduce a very useful tool to debug low-level issues in Python, how to enhance it and finally how to solve two annoying common problems. 1. Debugging Python with gdb All the basics are there : https://wiki.python.org/moin/DebuggingWithGdb Tl;dr : gdb -p $(pgrep -f …
Read MoreI've got many post ideas in the past two weeks, but none of them made it to the blog yet. While those scribbles are maturing, there is a short hack for the wonderful datepicker pluging for bootstrap.js. Given a datepicker initialized on a like this: $('#date-picker …
Read MoreTo illustrate my previous post and keep images at a reasonable size, I had to shrink down the top GIF from 14Mb to 3.2Mb. Usually, online GIF converters will provide the ability to lower down the image dimensions. Another solution to reduce its size is to simply skip some …
Read More
I truly think Etherpad is an amazing piece of software. Not so much for its code base quality than for its extraordinary range of usages. Now, while I'm still unsure if todo-lists are useful or a complete waste of energy, I'm convinced that keeping a developer logbook / diary / journal has …
Read MoreDo you know the pv command ? It's really nifty. There are a few use cases: echo "You can simulate on-screen typing just like in the movies" | pv -qL 10 # Show the incoming TCP packets rate: tcpdump tcp -w - | pv -btr >/dev/null # Show the maximum throughput between two machines: # (provided …
Read MoreJust relaying the information about this "ShellShock" vulnerability: RedHat security blog post the full disclosure on seclists.org This seems to affect Apache, sshd, DHCP clients and even potentially git. TL;DR here is how to check your Bash version env x='() { echo Never called; }; echo YOUR BASH IS VULNERABLE …
Read MoreI was asked the other day by my grand-mother in law to try to recover her photos from a diaporama video she created years ago. The diaporama was made of a succession of photos, occupying the whole screen for a moment and then transitioning with various effects to the next …
Read MoreI often find myself grep-ing for information in system or application log files. And often, by combining pipes, I end up generating a flow of values that is sometimes difficult to interpret. In this post I'll show you a quick-and-dirty but handy solution to get basic statistical quantities from …
Read More
As a tabletop RPG game master, whenever I need to imagine a universe background for a scenario, I need illustrations to picture myself the atmosphere, and get some inspiration. I usually simply surf the web from blog to blog, or spend some time on inspirational websites like DeviantArt, Tumblr, Unurth …
Read More
