Concept de branche, divergence + illustrations

imgs/branches.eps

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+showpage
+%%Trailer
+end
+%%EOF

presentation.tex

@@ -179,6 +179,89 @@ The key's randomart image is:
 
 \subsection{Principe}
 
+\begin{frame}{Principe}
+
+	\begin{block}{}
+	\enquote{Git permet de maintenir plusieurs versions différentes en parallèle}
+	\begin{flushright}
+		\textit{Nous, il y a deux semaines}
+	\end{flushright}
+	\end{block}
+
+	\Pause
+
+	Concrètement, tous les commits ne sont pas nécessairement sur la même \textbf{branche} de l'arbre.
+
+	\begin{center}
+	\includegraphics[width=.7\linewidth]{./imgs/branches.eps}
+	\end{center}
+
+	\textit{Le sens des flèches n'est pas chronologique ! Chaque commit pointe vers son père.}
+
+\end{frame}
+
+\begin{frame}{Création d'une divergence -- cas 1}
+	\begin{center}
+		\includegraphics[width=.4\linewidth]{./imgs/divergence.png}
+	\end{center}
+
+	\begin{block}{Analyse}
+		\begin{itemize}
+			\item C2 et C3 ont tous les deux C1 comme père;
+			\item C2 et C3 introduisent des modifications différentes après C1;
+			\item ici, C2 et C3 sont sur \textbf{deux branches différentes de C1};
+		\end{itemize}
+	\end{block}
+\end{frame}
+
+\begin{frame}{Création d'une divergence -- cas 2}
+	\begin{center}
+		\includegraphics[width=.3\linewidth]{./imgs/divergence_2.png}
+	\end{center}
+
+	\begin{block}{Analyse}
+		\begin{itemize}
+			\item C4 et C5 ont tous les deux C3 comme père;
+			\item C4 et C5 introduisent des modifications différentes après C3;
+			\item C4 est sur une branche \textbf{différente de C3};
+			\item C5 est sur \textbf{la même branche que C3}.
+		\end{itemize}
+	\end{block}
+\end{frame}
+
+\begin{frame}{Création d'une divergence}
+	\begin{block}{}
+		\centering
+		\enquote{Mais pourquoi est-ce qu'on fait ça ?}
+	\end{block}
+
+	\Pause
+
+	\begin{itemize}
+		\item pour isoler les travaux en cours
+		\item pour enregistrer des versions spécifiques
+	\end{itemize}
+
+	\Pause
+
+	\begin{block}{}
+		\centering
+		\enquote{Et c'est quoi la différence entre le cas 1 et le cas 2 ?}
+	\end{block}
+
+	\Pause
+
+	En théorie, pas grand chose à part la couleur :
+	\begin{itemize}
+		\item c'est une divergence dans les deux cas;
+		\item dans le cas 1, il est encore possible de faire un commit sur la branche jaune après C1.
+	\end{itemize}
+	En pratique avec git :
+	\begin{itemize}
+		\item ça dépend des modifications apportées et du sens que vous donnez à vos branches.
+	\end{itemize}
+
+\end{frame}
 
 \subsection{Application}