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Faire du-code-centre-sur-l-humain devoxx

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Présentation de Yannick Grenzinger au Devoxx France 2012 : Faire du code centré sur l'humain

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Faire du-code-centre-sur-l-humain devoxx

  1. 1. Faire du code centré sur l’humain ! par Yannick Grenzinger @ygrenzinger 1
  2. 2. Faire du codecentré surl’humain difficile de faire du code Pourquoi est il si qu’un autre humain puisse facilement comprendre et maintenir ? Parce que nous avons tous notre vision du monde ! Mais les concepts du design et de l’utilisabilité peuvent nous aider ! 2
  3. 3. Yannick Grenzinger•@ygrenzinger•Développeur chez Objet Direct•avec une passion pour la psychologie, l’agilité et l’expérience utilisateur (UX)en général•Blog UX : http://ux-fr.com•http://about.me/yannick.grenzinger 3
  4. 4. “Always code as if the guy who ends up maintaining your code will be aviolent psychopath who knows where you live.” Martin Golding 4
  5. 5. 5
  6. 6. Le modèle mental du code Modèle mental – codeur original ≠ Modèle mental - mainteneur 6
  7. 7. Les ergonomes ont déjà trouvé des solutions pour les objets de tous les jours ! Design centré sur l’utilisateur 7
  8. 8. Voir le code comme un objet ? = 8
  9. 9. Créons de bonnes affordances 9
  10. 10. Les concepts 10
  11. 11. Associations symboliques Dans le code : le nommage les patterns … 11
  12. 12. Associations naturelles Behaviour driven development: • Given [condition] • When [action] • Then [resultat] 12
  13. 13. Contraintes Evitons le code générique: • main (String[] args){ … } • void changeValeur( Object o, String nomChamp, Object val) 13
  14. 14. Visibilité Evitons ce genre de piège : @Service Class MonService { @Scheduled void chaqueMatin() { reveilleToi(); } @Transactional void reveilleToi() { … } } 14
  15. 15. Codons pour l’erreur code défensif Trace d’erreurs claires et complètes 15
  16. 16. Standardisez ! Faites des opérations similaires pour des tâches similaires 16
  17. 17. La boucle de feedback • Test Driven Development • Intégration continue • Déploiement continu Permettent d’accélérer le feedback ! 17
  18. 18. Documentez ! “Good code is its own best documentation.” Steve McConnell Mais ne laissez pas le développeur seul face à votre génie ;) 18
  19. 19. En appliquant ces concepts Votre modèle mental = Celui du mainteneur + documentation 19
  20. 20. Vous aurez un code plus facile à comprendre plus lisible plus maintenablecentré sur l’humain ! 20

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