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Status Future consideration
Workspace COBOL Compilers
Categories z/OS
Created by Guest
Created on Jul 30, 2024

RELATED IDEAS

Allow OMITTED parameters in function identifier.

The COBOL 2002 standard allows for the OMITTED keyword to be specified as a parameter to a function identifier. This should be allowed for Enterprise COBOL. It could be implemented in a manner similar to specifying OMITTED as a parameter in a CALL (BY REFERENCE), or it could be implemented along with the use of the OPTIONAL keyword on the procedure division using phrase, along with the omitted-argument (data-name IS OMITTED) condition.

Idea priority Medium
  • Admin
    Basil Kanneth
    Reply
    |     Sep 24, 2024

    This idea is being accepted. It will be updated further once put into plan. Thanks.

  • Guest
    Reply
    |     Aug 26, 2024

    Regarding the comment from "Guest" on July 31, 2024, are you asking for just allowing of omitted trailing arguments (leaving trailing optional arguments out of the function call, rather than having trailing OMITTED parameters? Or something else? If the former, that is already part of the COBOL standard, which I would expect IBM to implement.

  • Admin
    Basil Kanneth
    Reply
    |     Aug 26, 2024

    This idea is being investigated further.

  • Guest
    Reply
    |     Jul 31, 2024

    Hi,

    In addition to the management of OMITTED parameters, would it be possible to implement the management of "multiple signatures" at the level of functions prototype?

    That is to say, to be able to declare several prototypes for the same function name, and:

    • either declare as many implementations as prototypes with an exact correspondence of the parameters in number, positions and types,
    • or have an automatic management of OMITTED parameters at the implementation level when the prototype does not use a parameter, probably with some restrictions.

    The program would call the function through one of the function prototypes, and depending on the parameters passed the compiler would select automaticly the corresponding implementation.

    This is a bit like what exists today with standard intrinsic functions, some of which accept a variable number of arguments, or different types of arguments.
     

    Thanks.

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