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20 Oct 2011 SVG and m4 fractals »

Yesod logo made in SVG and m4

tl;dr: How to use m4 to increase the power of deficient languages. Two examples: improve xslt syntax and make fractal with svg.

xml was a very nice idea about structuring data. Some people where so enthusiastic about xml they saw it everywhere. The idea was: the future is xml. Then some people believe it would be a good idea to invent many xml compatible format and also programming languages with xml syntax.

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4 Oct 2011 Yesod excellent ideas »

Title image

tl;dr:

Yesod is a web framework which recently reached the maturity for which you should consider to use it. Before telling you why you should learn Haskell and use yesod, I will talk about ideas yesod introduced and I didn’t saw in other frameworks before.

Type safety

Let’s start by an obligatory link from xkcd:

SQL injection by a mom

When you create a web application, a lot of time is spent dealing wit...

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28 Sep 2011 Higher order function in zsh »

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tl;dr: some simple implementation of higher order function for zsh.

Why is it important to have these functions? Simply because, the more I programmed with zsh the more I tended to work using functional programming style.

The minimal to have better code are the functions map, filter and fold.

Let’s compare. First a program which convert all gif to png in many different directories of different projects.

Before ⇒

# for each directory in project...

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28 Sep 2011 Programming Language Experience »

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tl;dr: My short and higly subjective feelings about programming languages I used.

BASIC

Title image The language of my firsts programs! I was about 10, with an MO5 and Amstrad CPC 6128 and even with my Atari STe. This is the language of GOTOs. Ô nostalgia. Unfortunately this might be the only interesting part of this language.

Today this language is obsolescent. It is not even good to learn programming....

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25 Aug 2011 Learn Vim Progressively »

Über leet use vim!

tl;dr: Want to learn vim (the best text editor known to human kind) the fastest way possible. I suggest you a way. Start by learning the minimal to survive, then integrate slowly all tricks.

Vim the Six Billion Dollar editor

Better, Stronger, Faster.

Learn vim and it will be your last text editor. There isn’t any better text editor I know. Hard to learn, but incredible to use.

I suggest you to learn it in 4 steps:

  1. Survive
  2. Fe...

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alternate reality

Bazaar

blacklist

branches

bzr

Cappuccino

Cocoa

colors

comments

DCVS

dcvs

diverged

drm

editor

format

framework

functional

golfed

higher order functions

ideas

indecidability

iTunes

mandelbrot

multi-language

Objective-C

password

philosophy

Programming

protection

science

SVG

svn

tutorial

wav

workflow

XML

XSLT

yesod

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Two words about the content

Here you'll can find mostly technical articles. Some are just reminder of technical tips. But some are long and technically detailled articles.


I do my best to traduce each page in french and in english. It not always easy. English is not my natural language. I make many errors, orthographic, grammatical, typographical…

Thanks not to judge me based on these errors! And don't forget content is more important than presentation!

The first impression I'll let you if we meet in real life should be different from the one I let you based on my website.

I wish you to find something useful or interesting on this website.

Copyright ©, Yann Esposito
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