2014-06-27 — Article of 700 words Programming Haskell Hakyll Foundation Photography
This is the second post about the photography portfolio website project. If you want to find out more about the project, you could read the first post. In this post I will explain the initial setup of the project, and the creation of a bare home page for the site.
Read more...2014-01-30 — Article of 800 words Programming Haskell Hakyll Foundation Photography
I’m starting a new project to create a photography portfolio web site and I want to document its progress in a series of posts. I’ll write them for personal reference, but I will be glad if they will be useful for someone else.
This first post is about the rationale for the project and the initial plan.
Read more...2013-02-08 — Article of 800 words Programming Git Unison mr Robocopy TrueCrypt Backup
I use a Windows desktop at work, another one at home, and a Linux laptop during commuting. The laptop is for personal projects and the home desktop is for photo management and retouching. Many of the files are shared, so I have to synchronize them among computers. Moreover I want to have an up-to-date copy of the files in my home NAS, from where I can make a backup.
Read more...2012-05-18 — Article of 700 words Programming Haskell
I had a little repetitive task to automate in my
mt-euler project:
creating a pdf from a series of Literate Haskell files
using lhs2TeX and xelatex.
Looking for something like make or rake, but written in Haskell, I found Shake.
I used it and I was well pleased with the result.
Read more...2012-04-20 — Article of 700 words Programming Haskell Project Euler
Link to Project Euler problem 4
A palindromic number reads the same both ways. The largest palindrome made from the product of two 2-digit numbers is $9009=91\times99$.
Find the largest palindrome made from the product of two 3-digit numbers.
WARNING Solution ahead. Don’t read more if you want to enjoy the benefits of Project Euler and you haven’t already solved the problem.
Read more...2012-04-12 — Article of 800 words Programming Haskell Project Euler
Link to Project Euler problem 3
The prime factors of 13195 are 5, 7, 13 and 29.
What is the largest prime factor of the number 600851475143?
WARNING Solution ahead. Don’t read more if you want to enjoy the benefits of Project Euler and you haven’t already solved the problem.
Read more...2012-04-10 — Article of 200 words Programming Haskell Project Euler
Link to Project Euler problem 2
Each new term in the Fibonacci sequence is generated by adding the previous two terms. By starting with 1 and 2, the first 10 terms will be: 1,2,3,5,8,13,21,34,55,89, …
By considering the terms in the Fibonacci sequence whose values do not exceed four million, find the sum of the even-valued terms.
WARNING Solution ahead. Don’t read more if you want to enjoy the benefits of Project Euler and you haven’t already solved the problem.
Read more...2012-04-08 — Article of 300 words Programming Haskell Project Euler
Link to Project Euler problem 1
If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23.
Find the sum of all the multiples of 3 or 5 below 1000.
WARNING Solution ahead. Don’t read more if you want to enjoy the benefits of Project Euler and you haven’t already solved the problem.
Read more...2012-04-05 — Article of 500 words Programming Web Ruby Octopress
Some days ago I published this web site. Now I want to share some information on why and how I made it.
Read more...2011-10-18 — Quote Quote Programming
What if you want to learn the way of the analyst, anyway? Remember, a skilled analyst is not an expert in a specific domain (although he tends to grow into an expert in several domains). He’s not the person you pay to get answers. He’s the person you pay to get better questions (and so, indirectly, better answers). The skilled analyst will ask different questions, explore different avenues, and find out different facts. So the essential skills would be observation, knowledge of large class of problems, classification, and description.
2011-07-29 — Quote Quote Business Programming
If the business process you are supporting is part of your competitive advantage you should build custom software, if not you should buy a package and adjust your business process to fit the way the package works.
2011-06-28 — Quote Quote Programming
The irony of our fixation on artificially created crises is that deep, long-term problems – which arguably should be considered crises – are ignored. The most important of these surely relates to security — too much of our software is susceptible to attack, and too few users understand how to use software in a way that minimises security risks.
2011-06-28 — Quote Quote Programming
Unfortunately, ignorance in the basic use of computers is considered not only acceptable but the norm amongst the majority of computing and software professionals. The resulting loss in efficiency is vast and a rather sad indictment of our field.
2011-04-30 — Quote Quote Learning Programming
Researchers have shown it takes about ten years to develop expertise in any of a wide variety of areas, including chess playing, music composition, telegraph operation, painting, piano playing, swimming, tennis, and research in neuropsychology and topology. The key is deliberative practice: not just doing it again and again, but challenging yourself with a task that is just beyond your current ability, trying it, analyzing your performance while and after doing it, and correcting any mistakes. Then repeat. And repeat again.
HaskDeep is a command line tool, written in Haskell, that computes file hashes traversing recursively through a directory structure. Known hashes are saved to file and they can be used to verify the original files or a copy of them.
Read more...Exercises to learn Haskell programming language.
Read more...Solution to Project Euler problems with Literate Haskell.
Read more...