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Status Not under consideration
Workspace IBM i
Categories Languages - RPG
Created by Guest
Created on Mar 6, 2019

Allow multiple definitions in a Dcl-s statement

A very usefull future I found in other languages is multiple variable definition in one line of code:

Dcl-s a b c int(10);

is clearly faster and shorter than:

Dcl-s a int(10);
Dcl-s b int(10);
Dcl-s c int(10);


Use Case:

nd


Idea priority Medium
  • Guest
    Reply
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    Mar 8, 2019

    Colons are not the problem: let the developers be free to choose what they prefer.

  • Guest
    Reply
    |
    Mar 8, 2019

    Colons are not the problem: let the developers be free to choose what they prefer.

  • Guest
    Reply
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    Mar 7, 2019

    IBM does not intend to provide a solution to this request at this time, so it is being closed.

    For languages such as C and Java, style guidelines often recommend against defining multiple variables in the same definition. For example, http://www.informit.com/articles/article.aspx?p=2133373&seqNum=2.

    As an aside, as suggested by Matt's comment, the syntax for this would require colons to separate the names being defined::

    Dcl-s a : b : c int(10);

  • Guest
    Reply
    |
    Mar 7, 2019

    I'm not a fan of this at all. I think it will become harder to read and you could easily confuse variables.

    Plus, with the example provided you could easily cut and past the data definition section and just paste after you define the variable name.

    Jason

  • Guest
    Reply
    |
    Mar 6, 2019

    Nice idea - but it does make me nervous. I can envisage problems as this could so easily be misread:

    Dcl LastCustomer Name Char(50); // Two separate variables declared

    Dcl LastCustomerName Char(50); // One variable declared
    Dcl LastCustomer_Name Char(50); // One variable declared

    Dcl LastCustomer:Name Char(50); // Might be better - two separate variables declared

    Hmmm - on balance I think it safest to declare each variable separately; clear and easy to maintain with no opportunity for misinterpretation

  • Guest
    Reply
    |
    Mar 6, 2019

    Don't other languages require a token separator when declaring variables? This example confuses keyword tokens from variable tokens.