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Menu Principal / Informatiques / Bureautique / Microsoft Excel / Comprendre et gérer les dates sous Excel et en VBA


Comprendre et gérer les dates sous Excel et en VBA


Le but de ce tutoriel est d'expliciter la gestion et l'interprétation des dates (et heures) par Excel : nous n'aborderons donc ici ni les fonctions, ni les formats en dehors du minimum nécessaire au sujet. Nous nous efforcerons aussi de lever toutes les ambiguïtés possibles, ce qui devrait éclairer les comportements inattendus (mais pas illogiques) à travers les différents emplois de date.

Pour aborder ce type de sujet, on est obligé de faire mention à certains moments de noms ou de notions qui ne seront explicités que plus tard : il est donc important dans ce type de documents, de faire une première lecture globale, sans s'attarder sur des points inconnus ou précis, ceci afin de se familiariser avec l'ensemble, puis d'attaquer l'étude attentive proprement dite (exemple : Numéro de série dans le contexte de ce document).

Il peut sembler paradoxal par moment d'illustrer des approches déconseillées, mais le but ici est de décrire et ainsi de faire comprendre un phénomène qu'on aurait vite fait de qualifier de bogue quand il surgit.

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