Return to Spreadsheet_Ternary_Operator.tex CVS log

Up to [LON-CAPA] / loncom / html / adm / help / tex

Annotation of loncom/html/adm/help/tex/Spreadsheet_Ternary_Operator.tex, revision 1.2

1.2     ! bowersj2    1: \label{Spreadsheet_Ternary_Operator}
1.1       bowersj2    2: The ?'s and :'s seen in the spreadsheet cells are part of compact notation for an if-then-else clause. Something like:
                      3: 
                      4: \texttt{( B2 > 16 ? 'passing grade' : 'failing grade')}
                      5: 
                      6: can be translated into:
                      7: 
                      8: \texttt{if (B2 > 16 ) \{ \\
                      9:   \hspace*{16pt}     \$temp = 'passing grade';\\
                     10:   \} else \{ \\
                     11:   \hspace*{16pt}     \$temp = 'failing grade'; \\
                     12:   \} \\
                     13:   \$temp;\\
                     14: }
                     15: 
1.2     ! bowersj2   16: The nicest part of the \texttt{( ? : )} operator (aside from its
        !            17: compactness) is the way it automatically returns the value you want
        !            18: without having to use any temporary variables.