is(n) [incr Tcl] is(n)

NAME
       is - test argument to see if it is a class or an object

SYNOPSIS
       iiss option ?arg arg ...?


DESCRIPTION
       The  iiss command is used to check if the argument given is a class or an
       object; depending on the option given. If the argument if  a  class  or
       object,  then  1 is returned. Otherwise, 0 is returned.  The iiss command
       also recognizes the commands wrapped in the itcl ccooddee ccoommmmaanndd..

       The option argument determines what action is carried out by  the  com-
       mand.  The legal options (which may be abbreviated) are:

       iiss ccllaassss command
              Returns 1 if command is a class, and returns 0 otherwise.

              The  fully  qualified name of the class needs to be given as the
              command argument. So, if a class resides in  a  namespace,  then
              the  namespace  needs  to be specified as well. So, if a class CC
              rreessiiddeess iinn aa nnaammeessppaaccee NN,, tthheenn  tthhee  ccoommmmaanndd  sshhoouulldd  bbee  ccaalllleedd
              lliikkee:: iiss NN::::CC
                  or iiss ::::NN::::CC

       iiss object ?-ccllaassss className? command
              Returns 1 if command is an object, and returns 0 otherwise.

              If  the  optional "-ccllaassss" parameter is specified, then the com-
              mand will be checked within the context of the class given. Note
              that  className  has  to  exist.  If  not, then an error will be
              given. So, if className is uncertain to be  a  class,  then  the
              programmer will need to check it's existance beforehand, or wrap
              it in a catch statement.

              So, if cc is an object in the class CC, in namespace N then  these
              are the possibilities (all return 1): set obj [N::C c] is object
              N::c is object c is object $obj is object [code c]


KKEEYYWWOORRDDSS
       class, object




itcl                                  3.3                                is(n)