A tutorial a little different this time. I talk about tools and programming languages for developing data mining applications.
Start a discussion about "the best programming language" is an excellent way to fill an evening computer. The underlying question is "what is the language that develops applying the most powerful, fastest ... ".
Very good boy, the atmosphere quickly becomes stormy, or even harmful. Some people, very charming for the most part, behave passionate, even passionate, rise on their high horse (tagada, tagada) in Assen arguments sometimes completely irrational. I know whereof I speak, I am when I let myself go. Yet, ultimately, in deciding what kind of debate would be pretty easy. It sufficient to characterize the problems that we seek to solve, write an equivalent code in different languages, and study the behavior of l'exécutable généré. C'est ce que nous allons faire dans ce didacticiel en nous plaçant dans deux situations couramment rencontrées lors de la programmation d'algorithmes d'exploration de données. On verra que le résultat n'est pas du tout celui qu'on attendait (si on en attendait un, ouh là là je vois déjà certains bondir), loin de là.
Tout d'abord, corrigeons un abus de langage (si je puis dire), la performance n'est pas une affaire de langage, mais plutôt une affaire de technologie et de compilateur. Nous le verrons, le même code source, compilé avec des outils différents, peut aboutir à des exécutables avec des comportements très différents. We will study in this paper: C # with Visual C # Express Edition of Microsoft Pascal using Borland Delphi 6.0, Pascal with the Free Pascal Compiler 2.2.4 Lazarus 0.9.28, C + + with Borland C + + Builder 4, C + + with Dev C + + (compiler G + +) ; executed via Java JRE1.6.0_19 Windows (Eclipse development tool I used). All these tools except Borland C + + Buile 4, are available free on the net. For all, I have selected the options that optimize the compilation speed.
Performance is evaluated by measuring the time calculations executables launched through the shell outside the IDE (Integrated Development Environment) to avoid interference. My machine is multi-heart, user time and CPU time are almost the same. We content ourselves with the first. Each program is run 10 times. We calculate the average.
Keywords: programming language, c + +, C #, Delphi, pascal, java
Tutorial: fr_Tanagra_Programming_Language.pdf
Source Code: programming_language.zip
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