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|    246 \rule{11cm}{0.3mm} |    246 \rule{11cm}{0.3mm} | 
|    247 \bigskip |    247 \bigskip | 
|    248  |    248  | 
|    249 \begin{lstlisting}[language=Scala, numbers=none, xleftmargin=-7mm] |    249 \begin{lstlisting}[language=Scala, numbers=none, xleftmargin=-7mm] | 
|    250 def is_legal(dim: Int, p: Path, x: Pos): Boolean =  |    250 def is_legal(dim: Int, p: Path, x: Pos): Boolean =  | 
|    251   ......some_really_long_condition..... |    251   !......some_really_long_condition..... | 
|    252 \end{lstlisting}\pause |    252 \end{lstlisting}\pause | 
|    253  |    253  | 
|    254  |    254  | 
|    255 \end{frame} |    255 \end{frame} | 
|    256 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%  |    256 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%  |