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$ perl -e '$n=3; print "$n: "; for (my $i=0; $i<$n; $i++) { print $i,"
+ "} print "\n"'
3: 0 1 2

$ perl -e '$n=3.14; print "$n: "; for (my $i=0; $i<$n; $i++) { print $
+i," "} print "\n"'
3.14: 0 1 2 3

   Because each operand is evaluated in integer form, "2.18 .. 3.14" w
+ill
   return two elements in list context.

      @list = (2.18 .. 3.14); # same as @list = (2 .. 3);