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Status Not under consideration
Workspace PL/I Compilers
Created by Guest
Created on Jun 3, 2019

RELATED IDEAS

New builtin to replace ''

Initializing large structures, especially in procedures that are called many times, using '' is something that should rightly be frowned upon, and wherever possible, such initialisations should be done only once, saving the initialised structure in an equivalent-sized char(n), and moving that back to the structure for subsequent initialisations.

Idea priority Low
  • Guest
    Reply
    |     Jun 13, 2019

    As the comment below ways, this might make the language more complicated than needed. However, if an RFE were opened to allow '' to be assigned to AREAs, ENTRYs, and OFFSETs (as it is allowed today to be assigned to POINTERs and HANDLEs, this might be very useful in allowing more structures to be initialized via = ''

  • Guest
    Reply
    |     Jun 12, 2019

    The "do ' ' once, copy the memory to a buffer and use the buffer to re-init" sounds a bit antiquated to me, i know that we had this in our coding guidelines once.
    I'm not aware that the ''-init is a major performance problem for us, but this might differ from system to system.
    Nowadays we try to use DEFINE and the VALUE(:XX:) wherever possible which is imho the more elegant way.
    In general i advocate to use the existing functionality before introducing something new as adding options sometimes make it harder to find the right solution ;-),
    just my 0.02€, johann

  • Guest
    Reply
    |     Jun 10, 2019

    How smart can we make this? Maybe `empty(my_struct)` sets CHAR members to '', numeric members to 0, BIT members to '0'B, etc. That would be very handy!

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