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Josep Silva 2019-11-18 09:30:09 +00:00
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Secciones/motivation.tex
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@ -7,14 +7,14 @@
\section{Motivation} \section{Motivation}
\label{sec:motivation} \label{sec:motivation}
Program slicing~\cite{Wei81} is a debugging technique which, given a line of Program slicing~\cite{Wei81} is a debugging technique \deleted{which}\added{that}, given a line of
code and a variable of a program, simplifies such program so that the only parts code and a \added{set of} variable\added{s} of a program, simplifies such program so that the only parts
left of it are those that affect the value of the selected variable. left of it are those that affect \added{or are affected by} the value\added{s} of the selected variable\added{s}.
\begin{example}[Program slicing in a simple method] \begin{example}[Program slicing in a simple method]
If the following program is sliced on line 5 (variable \texttt{x}), the If the following program is sliced on \added{(line 5, variable \texttt{x})} \deleted{line 5 (variable \texttt{x})}, the
result would be the program of the right, with the \texttt{if} block result would be the program of\josep{at?} the right, with the \texttt{if} block
skipped, as it doesn't affect the value of \texttt{x}. skipped, as it \added{does not}\deleted{doesn't} affect the value of \texttt{x}.
\label{exa:program-slicing} \label{exa:program-slicing}
\begin{center} \begin{center}
\begin{minipage}{0.49\linewidth} \begin{minipage}{0.49\linewidth}
@ -40,8 +40,8 @@ void f(int x) {
\end{center} \end{center}
\end{example} \end{example}
Slices are an executable program whose execution will produce the same values Slices are \deleted{an} executable program\added{s} whose execution \deleted{will} produce\added{s} the same values
for the specified line and variable as the original program, and are used to for the specified line and variable as the original program, and \added{they} are used to
facilitate debugging of large and complex programs, where the data flow may not facilitate debugging of large and complex programs, where the data flow may not
be easily understandable. be easily understandable.