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    49 \noindent  | 
    49 \noindent  | 
    50 The official Scala compiler can be downloaded from  | 
    50 The official Scala compiler can be downloaded from  | 
    51   | 
    51   | 
    52 \begin{quote} | 
    52 \begin{quote} | 
    53 \url{http://www.scala-lang.org} | 
    53 \url{http://www.scala-lang.org} | 
    54 \end{quote} | 
    54 \end{quote}  | 
    55   | 
    55   | 
    56 \noindent  | 
    56 \noindent  | 
    57 I found a convenient IDE for writing Scala programs is Microsoft's  | 
    57 I found a convenient IDE for writing Scala programs is Microsoft's  | 
    58 \textit{Visual Studio Code} (VS Code) which runs under MacOSX, Linux and | 
    58 \textit{Visual Studio Code} (VS Code) which runs under MacOSX, Linux and | 
    59 obviously Windows.\footnote{Unlike \emph{Microsoft Visual Studio}, which | 
    59 obviously Windows.\footnote{Unlike \emph{Microsoft Visual Studio}, which |