Blog Archive

• Feb 11, 2024 • Roger Ferrer Ibáñez • loops, compilers, programming, overflow

  Subtleties with loops

• Jan 5, 2024 • Roger Ferrer Ibáñez • systemd, linux, processes

  Mitigate runaway processes

• Dec 24, 2023 • Bernat Ràfales • aws, testing, lambda, docker

  Locally testing API Gateway Docker based Lambdas

• Sep 3, 2023 • Roger Ferrer Ibáñez • ssh, notifications, dbus, systemd, linux

  Graphical notifications for long-running tasks

• Feb 4, 2023 • Roger Ferrer Ibáñez • gtk, gobject, gnome, cpp, cplusplus

  Writing GObjects in C++

• Jan 15, 2023 • Roger Ferrer Ibáñez • gtk, gobject, gnome, cpp, cplusplus

  Wrapping GObjects in C++

• Aug 4, 2022 • Bernat Ràfales • ruby, testing, github-actions, rspec

  Bisecting flaky tests with rspec and GitHub Actions

• Jan 3, 2022 • Roger Ferrer Ibáñez • SOCKS, proxy, ssh

  OpenSSH as a SOCKS server

• Dec 31, 2021 • Roger Ferrer Ibáñez • distributed, compilation, cluster, HPC, scientific

  Distributed compilation in a cluster

• Aug 22, 2021 • Roger Ferrer Ibáñez • vectors, raspberry pi 1, llvm, compilers, arm

  Fun with vectors in the Raspberry Pi 1 - Part 9

• Aug 15, 2021 • Roger Ferrer Ibáñez • vectors, raspberry pi 1, llvm, compilers, arm

  Fun with vectors in the Raspberry Pi 1 - Part 8

• Jul 31, 2021 • Roger Ferrer Ibáñez • vectors, raspberry pi 1, llvm, compilers, arm

  Fun with vectors in the Raspberry Pi 1 - Part 7

• Jul 11, 2021 • Roger Ferrer Ibáñez • vectors, raspberry pi 1, llvm, compilers, arm

  Fun with vectors in the Raspberry Pi 1 - Part 6

• Jul 10, 2021 • Roger Ferrer Ibáñez • vectors, raspberry pi 1, llvm, compilers, arm

  Fun with vectors in the Raspberry Pi 1 - Part 5

• Jun 27, 2021 • Roger Ferrer Ibáñez • vectors, raspberry pi 1, llvm, compilers, arm

  Fun with vectors in the Raspberry Pi 1 - Part 4

• Jun 26, 2021 • Roger Ferrer Ibáñez • vectors, raspberry pi 1, llvm, compilers, arm

  Fun with vectors in the Raspberry Pi 1 - Part 3

• Jun 25, 2021 • Roger Ferrer Ibáñez • vectors, raspberry pi 1, llvm, compilers, arm

  Fun with vectors in the Raspberry Pi 1 - Part 2

• Jun 25, 2021 • Roger Ferrer Ibáñez • vectors, raspberry pi 1, llvm, compilers, arm

  Fun with vectors in the Raspberry Pi 1 - Part 1

• Mar 1, 2021 • Roger Ferrer Ibáñez • c++, raii, clang-tidy, locks

  RAII, locks and clang-tidy

• Nov 22, 2020 • Roger Ferrer Ibáñez • linux, libraries, programming

  Process-wide information and Linux key management

• Jul 15, 2020 • Bernat Ràfales • ruby, sidekiq

  Logging Sidekiq job arguments in Sidekiq 6

• Jun 20, 2020 • Roger Ferrer Ibáñez • compilers, llvm, risc-v

  Forgotten memories (2)

• Jun 20, 2020 • Roger Ferrer Ibáñez • compilers, llvm, risc-v

  Forgotten memories (1)

• Jun 6, 2020 • Roger Ferrer Ibáñez • dns, dhcp

  Create your own local domain and DHCP with dnsmasq

• Jun 6, 2020 • Roger Ferrer Ibáñez • ssh

  Using SSH Certificates

• Mar 10, 2019 • Roger Ferrer Ibáñez • Fortran

  Fortran and modules

• Dec 22, 2018 • Roger Ferrer Ibáñez • compilers, Fortran

  Walk-through flang – Part 8

• Oct 5, 2018 • Bernat Ràfales • Uncategorized • aws, go, serverless

  Serverless framework: a small example

• Aug 25, 2018 • Roger Ferrer Ibáñez • compilers, Fortran

  Walk-through flang – Part 7

• May 31, 2018 • Bernat Ràfales • Uncategorized • go, testing

  Setting and deleting cookies in Go

• May 19, 2018 • Bernat Ràfales • Uncategorized • apache, devops

  Redirect parts of your website to different applications with Apache

• Mar 18, 2018 • Roger Ferrer Ibáñez • compilers, Fortran

  Walk-through flang – Part 6

• Nov 19, 2017 • Roger Ferrer Ibáñez • Uncategorized

  A very simple memory pool in C++11

• Nov 5, 2017 • Roger Ferrer Ibáñez • AArch64

  Exploring AArch64 assembler – Chapter 9

• Oct 7, 2017 • Roger Ferrer Ibáñez • compilers, Fortran

  Walk-through flang – Part 5

• Sep 3, 2017 • Roger Ferrer Ibáñez • compilers, Fortran

  Walk-through flang – Part 4

• Jul 29, 2017 • Roger Ferrer Ibáñez • compilers, Fortran

  Walk-through flang – Part 3

• Jun 17, 2017 • Roger Ferrer Ibáñez • compilers, Fortran

  Walk-through flang – Part 2

• Jun 17, 2017 • Roger Ferrer Ibáñez • compilers, Fortran

  Walk-through flang – Part 1

• Jun 15, 2017 • Roger Ferrer Ibáñez • Uncategorized

  10 years of Think In Geek

• May 31, 2017 • Roger Ferrer Ibáñez • compilers

  Compilers as a memory error detectors

• May 29, 2017 • Roger Ferrer Ibáñez • AArch64

  Exploring AArch64 assembler – Chapter 8

• May 21, 2017 • Bernat Ràfales • Uncategorized

  A small Telegram Bot in Go

• Apr 17, 2017 • Roger Ferrer Ibáñez • Raspberry Pi

  ARM assembler in Raspberry Pi – Chapter 27

• Apr 2, 2017 • Roger Ferrer Ibáñez • compilers

  Whose is this optimization?

• Mar 19, 2017 • Roger Ferrer Ibáñez • AArch64

  Exploring AArch64 assembler – Chapter 7

• Feb 25, 2017 • Roger Ferrer Ibáñez • Fortran

  Compilation of array expressions in Fortran

• Jan 14, 2017 • Roger Ferrer Ibáñez • compilers, Fortran

  Introduction to the gfortran array descriptor

• Dec 3, 2016 • Roger Ferrer Ibáñez • compilers

  How (not) to write a C++ front end – Part 3

• Nov 27, 2016 • Roger Ferrer Ibáñez • AArch64

  Exploring AArch64 assembler – Chapter 6

• Nov 13, 2016 • Roger Ferrer Ibáñez • AArch64

  Exploring AArch64 assembler – Chapter 5

• Oct 30, 2016 • Roger Ferrer Ibáñez • Raspberry Pi

  ARM assembler in Raspberry Pi – Chapter 26

• Oct 23, 2016 • Roger Ferrer Ibáñez • AArch64

  Exploring AArch64 assembler – Chapter 4

• Oct 23, 2016 • Roger Ferrer Ibáñez • AArch64

  Exploring AArch64 assembler – Chapter 3

• Oct 8, 2016 • Roger Ferrer Ibáñez • AArch64

  Exploring AArch64 assembler – Chapter 2

• Oct 8, 2016 • Roger Ferrer Ibáñez • compilers

  How (not) to write a C++ front end – Part 2

• Oct 8, 2016 • Roger Ferrer Ibáñez • compilers

  How (not) to write a C++ front end – Part 1

• Oct 8, 2016 • Roger Ferrer Ibáñez • AArch64

  Exploring AArch64 assembler – Chapter 1

• Sep 5, 2016 • Roger Ferrer Ibáñez • compilers, GCC

  A tiny GCC front end – Part 11

• Sep 4, 2016 • Roger Ferrer Ibáñez • compilers, GCC

  A tiny GCC front end – Part 10

• Jan 31, 2016 • Roger Ferrer Ibáñez • compilers, GCC

  A tiny GCC front end – Part 9

• Jan 30, 2016 • Roger Ferrer Ibáñez • compilers, GCC

  A tiny GCC front end – Part 8

• Jan 19, 2016 • Roger Ferrer Ibáñez • compilers, GCC • gcc, tiny

  A tiny GCC front end – Part 7

• Jan 17, 2016 • Roger Ferrer Ibáñez • compilers, GCC • gcc, tiny

  A tiny GCC front end – Part 6

• Jan 16, 2016 • Roger Ferrer Ibáñez • compilers, GCC • gcc, tiny

  A tiny GCC front end – Part 5

• Jan 10, 2016 • Roger Ferrer Ibáñez • compilers, GCC • gcc, tiny

  A tiny GCC front end – Part 4

• Jan 8, 2016 • Roger Ferrer Ibáñez • compilers, GCC • gcc, tiny

  A tiny GCC front end – Part 3

• Jan 6, 2016 • Roger Ferrer Ibáñez • compilers, GCC • gcc, tiny

  A tiny GCC front end – Part 2

• Jan 5, 2016 • Roger Ferrer Ibáñez • compilers, GCC • compilers, frontend, gcc, tiny

  A tiny GCC front end – Part 1

• Nov 20, 2015 • Roger Ferrer Ibáñez • compilers

  Toying with GCC JIT – Part 3

• Nov 18, 2015 • Roger Ferrer Ibáñez • compilers

  Toying with GCC JIT – Part 2

• Nov 14, 2015 • Roger Ferrer Ibáñez • compilers

  Toying with GCC JIT – Part 1

• Aug 17, 2015 • Roger Ferrer Ibáñez • compilers

  A simple plugin for GCC – Part 3

• Aug 16, 2015 • Roger Ferrer Ibáñez • compilers

  A simple plugin for GCC – Part 2

• Aug 16, 2015 • Roger Ferrer Ibáñez • compilers

  A simple plugin for GCC – Part 1

• Jul 4, 2015 • Roger Ferrer Ibáñez • Raspberry Pi • arm, assembler, pi, raspberry

  ARM assembler in Raspberry Pi – Chapter 25

• Feb 26, 2015 • Roger Ferrer Ibáñez • Uncategorized • arrays, c language, language, standard c, standardc

  When an array is not an array

• Jan 9, 2015 • Roger Ferrer Ibáñez • Raspberry Pi • arm, assembler, raspberry

  ARM assembler in Raspberry Pi – Chapter 24

• Jan 3, 2015 • Roger Ferrer Ibáñez • linux • debian, fixes, opensource, packages, ubuntu

  Read DVDs with bogus permissions in Ubuntu

• Jan 2, 2015 • Roger Ferrer Ibáñez • Raspberry Pi

  ARM assembler in Raspberry Pi – Chapter 23

• Dec 20, 2014 • Roger Ferrer Ibáñez • Raspberry Pi • arm, assembler

  ARM assembler in Raspberry Pi – Chapter 22

• Aug 23, 2014 • Roger Ferrer Ibáñez • Raspberry Pi

  ARM assembler in Raspberry Pi – Chapter 21

• Aug 20, 2014 • Roger Ferrer Ibáñez • Raspberry Pi

  ARM assembler in Raspberry Pi – Chapter 20

• Jun 9, 2014 • Bernat Ràfales • Uncategorized • javascript, jquery, tinymce

  TinyMCE checkbox toggler for jQuery

• May 24, 2014 • Roger Ferrer Ibáñez • Raspberry Pi

  ARM assembler in Raspberry Pi – Chapter 19

• May 11, 2014 • Roger Ferrer Ibáñez • Raspberry Pi

  ARM assembler in Raspberry Pi – Chapter 18

• May 10, 2014 • Bernat Ràfales • Uncategorized • ansible, apache, aws, centos, devops, ec2, passenger, rails, rbenv, ruby, ruby on rails, sysadmin

  How to create and configure EC2 instances for Rails hosting with CentOS using Ansible

• Feb 12, 2014 • Bernat Ràfales • Uncategorized • bash, mysql, scripting

  Check progress of a mysql database import

• Nov 20, 2013 • Roger Ferrer Ibáñez • Raspberry Pi

  ARM assembler in Raspberry Pi – Chapter 17

• Nov 15, 2013 • Bernat Ràfales • Uncategorized • ruby, ruby on rails, rubyzip

  Create a temporary zip file to send as response in Rails

• Aug 23, 2013 • Roger Ferrer Ibáñez • Raspberry Pi

  ARM assembler in Raspberry Pi – Chapter 16

• Aug 11, 2013 • Roger Ferrer Ibáñez • Raspberry Pi

  ARM assembler in Raspberry Pi – Chapter 15

• Jul 10, 2013 • Bernat Ràfales • Uncategorized • gems, ruby on rails, single table inheritance

  acts_as_list gem and single table inheritance in Rails

• Jun 8, 2013 • Bernat Ràfales • Uncategorized • centos, check_mk, devops, linux, nagios, sysadmin

  Check_MK, software updates and mount options alarms

• May 12, 2013 • Roger Ferrer Ibáñez • Raspberry Pi

  ARM assembler in Raspberry Pi – Chapter 14

• May 12, 2013 • Roger Ferrer Ibáñez • Raspberry Pi

  ARM assembler in Raspberry Pi – Chapter 13

• Apr 27, 2013 • Bernat Ràfales • Uncategorized • capybara, paypal, ruby on rails, testing

  Capybara, pop up windows and the new PayPal sandbox

• Mar 28, 2013 • Roger Ferrer Ibáñez • Raspberry Pi • arm, assembler, pi, raspberry

  ARM assembler in Raspberry Pi – Chapter 12

• Mar 16, 2013 • Roger Ferrer Ibáñez • Raspberry Pi • arm, assembler, branches, function, function call, functions, pi, predication, raspberry

  ARM assembler in Raspberry Pi – Chapter 11

• Feb 7, 2013 • Roger Ferrer Ibáñez • Raspberry Pi • arm, assembler, function, function call, functions, pi, raspberry, stack

  ARM assembler in Raspberry Pi – Chapter 10

• Feb 2, 2013 • Roger Ferrer Ibáñez • Raspberry Pi • arm, assembler, function, function call, functions, pi, raspberry

  ARM assembler in Raspberry Pi – Chapter 9

• Jan 27, 2013 • Roger Ferrer Ibáñez • Raspberry Pi • addresses, arm, assembler, indexing modes, pi, postindex, preindex, raspberry

  ARM assembler in Raspberry Pi – Chapter 8

• Jan 26, 2013 • Roger Ferrer Ibáñez • Raspberry Pi • arm, assembler, indexing modes, pi, raspberry

  ARM assembler in Raspberry Pi – Chapter 7

• Jan 20, 2013 • Roger Ferrer Ibáñez • Raspberry Pi • arm, assembler, control structures, pi, raspberry

  ARM assembler in Raspberry Pi – Chapter 6

• Jan 19, 2013 • Roger Ferrer Ibáñez • Raspberry Pi • arm, assembler, branches, pi, raspberry

  ARM assembler in Raspberry Pi – Chapter 5

• Jan 12, 2013 • Roger Ferrer Ibáñez • Raspberry Pi • arm, assembler, debugger, gdb, pi, raspberry

  ARM assembler in Raspberry Pi – Chapter 4

• Jan 11, 2013 • Roger Ferrer Ibáñez • Raspberry Pi • arm, assembler, load, pi, raspberry, store

  ARM assembler in Raspberry Pi – Chapter 3

• Jan 10, 2013 • Roger Ferrer Ibáñez • Raspberry Pi • arm, assembler, pi, raspberry

  ARM assembler in Raspberry Pi – Chapter 2

• Jan 9, 2013 • Roger Ferrer Ibáñez • Raspberry Pi • arm, assembler, pi, raspberry

  ARM assembler in Raspberry Pi – Chapter 1

• Dec 26, 2012 • Bernat Ràfales • Uncategorized • apache, security

  Fast and easy way to block bots from your website using Apache

• Dec 12, 2012 • Bernat Ràfales • Uncategorized • mac os x, mountain lion, node.js

  Node.js packages in Mountain Lion

• Nov 17, 2012 • Bernat Ràfales • Uncategorized • iterm, mac os x, shell

  Mac OS X, iTerm and the meta key

• Nov 5, 2012 • Bernat Ràfales • Uncategorized • apple

  Why I will never buy an Apple product again

• Aug 8, 2012 • Roger Ferrer Ibáñez • Uncategorized

  Common linking issues in C++

• Jul 29, 2012 • Roger Ferrer Ibáñez • Uncategorized • classes, cplusplus, functions, specializations, templates

  Crazy stuff in C++ (1)

• Jul 29, 2012 • Bernat Ràfales • Uncategorized • gmail, google, mail, ruby, smtp

  Sending emails using Google Mail with Ruby

• Jul 16, 2012 • Bernat Ràfales • Uncategorized • cache, ruby on rails, varnish

  Ruby on Rails, Varnish and user dependent content

• Jun 11, 2012 • Bernat Ràfales • Uncategorized • enumerator, fizzbuzz, rspec, ruby

  A Ruby implementation of the FizzBuzz test using the Enumerator class

• Jun 7, 2012 • Bernat Ràfales • Uncategorized • git, tags

  Push git tags to a remote repository

• Feb 1, 2012 • Bernat Ràfales • Uncategorized • irb, ruby, ruby on rails, wirble

  Give your Ruby console a dash of colour

• Jan 24, 2012 • Bernat Ràfales • Uncategorized • gui, Java, ruby, ruby on rails, rubymine, xmonad

  Fix Java GUI applications in xmonad

• Jan 24, 2012 • Bernat Ràfales • Uncategorized • activerecord, databases, github, rails, ruby, ruby on rails

  Ruby on Rails Many To Many associations with multiple databases

• Dec 2, 2011 • Bernat Ràfales • Uncategorized • ruby on rails, ubiquo

  Creating your own Job Managers in Ubiquo

• Nov 21, 2011 • Bernat Ràfales • Uncategorized • haskell, linux, xmonad

  Simple guide to configure xmonad, dzen2 and conky

• Oct 20, 2011 • Bernat Ràfales • Uncategorized • enumerable, ruby, ruby on rails

  Iterate over a collection in groups, and other things

• Jul 4, 2011 • Bernat Ràfales • Uncategorized • activerecord, array, ruby, ruby on rails

  Easily select random records in rails

• Jun 16, 2011 • Bernat Ràfales • Uncategorized • addtoany, footer, php, wordpress

  WordPress AddToAny plugin

• Jun 16, 2011 • Bernat Ràfales • Uncategorized • fixtures, ruby, ruby on rails, serialize, yaml

  Fixtures and serialized attributes in Ruby on Rails

• May 19, 2011 • Bernat Ràfales • Uncategorized • archlinux, xmonad

  Installing xmonad in ArchLinux

• Apr 15, 2011 • Bernat Ràfales • Uncategorized • adobe air, air, html, javascript

  Handling resizing in Adobe Air with HTML

• Mar 29, 2011 • Bernat Ràfales • Uncategorized • autocomplete, javascript, jquery, jqueryUI

  Limiting the suggestions on jQueryUI Autocomplete widget

• Mar 11, 2011 • Bernat Ràfales • Uncategorized • bars, html, javascript, jquery

  jQuery Bars plugin

• Mar 9, 2011 • Bernat Ràfales • Uncategorized • jsonp, rails, ruby, ruby on rails

  Create your own JSONP Proxy using Ruby on Rails

• Feb 18, 2011 • Bernat Ràfales • Uncategorized • archlinux, dropbox, gnome, linux, nautilus

  Installing dropbox and dropbox-nautilus in ArchLinux

• Dec 14, 2010 • Bernat Ràfales • Uncategorized • c#, MVC

  Routing a hiearchical path in ASP.NET MVC

• Dec 2, 2010 • Bernat Ràfales • Uncategorized • .net, c#

  Get the number of days in a month in .NET

• Nov 24, 2010 • Bernat Ràfales • Uncategorized • ajax, c#, javascript, jquery, MVC

  Execute javascript code every time a form is loaded via Ajax.BeginForm

• Nov 16, 2010 • Bernat Ràfales • Uncategorized • c#, jquery, json, MVC

  Creating and consuming JSON data in MVC 2

• Oct 12, 2009 • Bernat Ràfales • Uncategorized • c#, programming tips

  C#, the "and" operators and lazy evaluation

• Jul 9, 2009 • Bernat Ràfales • Uncategorized • c#, nunit, unit testing

  Creating and testing a Linked List based Queue in C# using Nunit

• Jun 8, 2009 • Bernat Ràfales • Uncategorized • ajax, asp, javascript, jquery

  Disabling UpdatePanels when an asynchronous postback in progress

• Mar 11, 2009 • Bernat Ràfales • Uncategorized • .net, c#, ironpython, ironruby, python, ruby

  Using IronPython to extend your .NET applications

• Nov 18, 2008 • Aleix López • Uncategorized • .net, c#, programming tips

  Full view of ComboBox drop-down list components in C# 3.0

• Nov 13, 2008 • Bernat Ràfales • Uncategorized • security, sql server

  Controlling the commands executed with xp_cmdshell on SQL Server 2005

• Jul 16, 2008 • Bernat Ràfales • Uncategorized • .net, c#, Java, programming tips

  C# and the StringBuilder class

• Sep 23, 2007 • Bernat Ràfales • Uncategorized • sql server, tips and tricks

  Repeatable read and deadlocks in SQL Server

• Sep 8, 2007 • Javier Segura • Uncategorized • bash, ruby, ruby on rails, tips and tricks

  Killing all rails logs with one Ctrl+C?

• Jul 29, 2007 • Bernat Ràfales • Uncategorized • c#, design patterns, programming tips

  The Double Check Design Pattern

• Jul 27, 2007 • Javier Segura • Uncategorized • programming tips, ruby

  Ruby Quiz

• Jul 9, 2007 • Javier Segura • Uncategorized • curiosities, intelligence, spam

  The madness of captchas

• Jul 8, 2007 • Bernat Ràfales • Uncategorized • ipod, itunes

  Managing the music between iTunes and the iPod

• Jul 4, 2007 • Bernat Ràfales • Uncategorized • mac os, software

  Sofa Control, or how to operate your Mac from the sofa

• Jun 30, 2007 • Bernat Ràfales • Uncategorized • linux, mac os, parallels, ubuntu

  Ubuntu 7.04, Mac OS X and Parallels howto

• Jun 28, 2007 • Javier Segura • Uncategorized • apple, firefox, tips and tricks

  Avoid firefox message: Install missing plugins

• Jun 27, 2007 • Javier Segura • Uncategorized • programming tips, ruby, tools

  Customizing IRB

• Jun 23, 2007 • Bernat Ràfales • Uncategorized • ajax, firebug, firefox, javascript

  Developing Javascript involved web applications with Firebug

• Jun 22, 2007 • Javier Segura • Uncategorized • ruby on rails, subversion

  Subversioning a Rails App

• Jun 19, 2007 • Bernat Ràfales • Uncategorized • bind, dhcp, linux, networking

  Create your own local domain with DHCP and BIND

• Jun 17, 2007 • Javier Segura • Uncategorized • gadgets, ipod, sports

  Nike + iPod

• Jun 15, 2007 • Bernat Ràfales • Uncategorized • programming tips, visual studio

  Code Snippets in Visual Studio 2005

• Jun 15, 2007 • Bernat Ràfales • Uncategorized

  Think in Geek!