topdifferent Calculation of matrixes
Return value
tableau
Parameters
a
in
required
b
in
required
Examples
a = [2,4,6,8]
b = [6,1,3,2]
different(a,b) = [ 4, 8] ; Elements in A but not in B
Version history
Version
$Id: different.pro 134 2006-07-07 10:19:08Z navarro $
History
http://www.dfanning.com/tips/set_operations.html
Known issues
Restrictions
The empty set is denoted by an array with the first element equal to
-1.
These functions will not be efficient on sparse sets with wide
ranges, as they trade memory for efficiency. The HISTOGRAM function
is used, which creates arrays of size equal to the range of the
resulting set.