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Status Not under consideration
Workspace PL/I Compilers
Created by Guest
Created on Feb 1, 2019

RELATED IDEAS

init for alias

If you define an alias you may want some default init values for that type.
If you would can add the init attribute to the type definition and use the value(::) keyword on the allocation, similar to define structure, you can use specific init values for an defined alias.

Idea priority Low
  • Guest
    Reply
    |     Sep 5, 2019

    We are rejecting this because this breaks the intent of the DEFINE ALIAS statement which is to define a data type since the INIT and VALUE attributes are not data type attributes. Also, we suspect that the most common INIT value would be zero or '' or SYSNULL (depending on the type) and specify INIT( '' ) or INIT( ''b ) on the declare would do this for almost all types

  • Guest
    Reply
    |     Jul 10, 2019

    don't get the question.
    so if i want an init i have to code it. if i dont' code it, it won't init.

    the init should also work in "cascaded" structs:

    define alias acc_nr_t dec fixed(11) init(0);
    define struct 1 account_t,
    2 type acc_nr_t init(value(:acc_nr_t:)),
    2 amount dec fixed(13,2) init(0);

    dcl my_account type account_t init(value(:account_t:));
    ...
    //later on
    my_account = value(:account_t:);

  • Guest
    Reply
    |     Feb 7, 2019

    This is reasonable, but in the example

    define alias size_T bin(31) fixed init(42);
    dcl defaultSize type size_T init(value(:size_T:));

    one could argue if the INIT on the declare should be needed - or should it just come from the type definition?

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