Re: *INZSR - I still love you!!! -- RPG400-L

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Bartell, Aaron L. (TC) wrote:

RPG isn't the only language that has initialize type functions that only
execute the first time they are called.  When I was programming Java
Servlets awhile ago I used a init method to create a pool of iSeries
connections.  I only wanted that to execute when the Java class was first
loaded by Tomcat and the init methods were my ticket.  I am sure there are
many other languages out there with the same thing.  Constructors (in any
language) would also be a comparable to *INZSR. . .

To put it short *INZSR adds functionality to RPG.  If you need it you can
use it, but make just make sure you understand how it works and you will be
set (like Cozzi said).

Maybe *INZSR is the poor mans constructor ;-)

Clearly I wasn't the first one to be reminded of constructors in OO languages. But there are differences. Constructors are used to initialize object instances, a concept which is of course foreign to procedural languages like RPG. Generally, in OO languages, you can't initialize instance data otherwise.

But in RPG, (apart from that weird opcode RESET, which has no comparable analog in any other language, AFAIK) you could just as easily do without the *INZSR. Just perform your initializations when you start your procedure or program, and you're set.

Cheers! Hans

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