File: exists.cat

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scilab 2.6-4
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exists            Scilab Group            Scilab Function            exists
NAME
   exists - checks variable  existence
  
CALLING SEQUENCE
 exists(name [,where])
PARAMETERS
 name       : a character string
            
 where      : an optional character string with default value 'all'
            
DESCRIPTION
   exists(name) returns 1 if the variable named name exists and 0 otherwise.
    Caveats: a function which uses exists may return a result which depends
  on the environment!  exists(name,'local') returns 1 if the variable named
  name exists in the local environment of the current function and 0
  otherwise.   
  
EXAMPLE
 deff('foo(x)',..
 ['disp([exists(''a12''),exists(''a12'',''local'')])'
  'disp([exists(''x''),exists(''x'',''local'')])'])
 foo(1)
 a12=[];foo(1)
SEE ALSO
   isdef, whereis, type, typeof, macrovar