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  2. MIDRANGE-L
  3. December 2001

Re: array handling

A new way of dealing with this potential performance problem was recently
introduced. - V5R1 added the %LOOKUP built-in-function which allows you to
specify a fourth optional parameter specifying the maximum number of
compares to perform.

If you set this parameter to the current number of elements loaded, you
ensure that no unneccessary compares are performed if the lookup might end
unmatched.

Best regards,
Carsten Flensburg


> Now you run into the problem of unused elements.  Let's say you make your
> array 1000 elements long, but you only use 20.  In that case, most of the
> time is spent chceking unused elements.

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