note LanX <i> > Regarding your footnote, supposing i didn't need 0 for false, how would i do it? And how else can you represent false? </i><P> Just use the product of a doubled negation to get clear booleans!¹<P> Perl's definition of false covers different data types and context cases.<P> from [doc://perldata]<P> <c> A scalar value is interpreted as TRUE in the Boolean sense if it is not the null string or the number 0 (or its string equivalent, "0"). The Boolean context is just a special kind of scalar context where no conversion to a string or a number is ever performed. </c><P> (Null string here means either empty string <c>""</c> or <c>undef</c>)<P> from [doc://perlsyn]<P> <c> Truth and Falsehood The number 0, the strings '0' and '', the empty list "()", and "undef" are all false in a boolean context. All other values are true. Negation of a true value by "!" or "not" returns a special false value. When evaluated as a string it is treated as '', but as a number, it is treated as 0. </c><P> <!-- Node text goes above. Div tags should contain sig only --> <div class="pmsig"><div class="pmsig-708738"> <p>Cheers Rolf </div></div><P> ¹) in this case <c> my @cell_contents = map { !!$_ } @$array_ref[3..10];</c><P> for me the most readable alternative! 1010917 1010920