Copyright 1999 CERN - European Organization for Nuclear Research.
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It is provided "as is" without expressed or implied warranty.
Example: forEach() methods often use procedure objects. To signal to a forEach() method whether iteration should continue normally or terminate (because for example a matching element has been found), a procedure can return false to indicate termination and true to indicate continuation.
firstfirst argument passed to the procedure.
secondsecond argument passed to the procedure.