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In the quest towards modern applications, decoupling your logic is key for achieving flexibility and maintainability. This technique is much better than sending back an "error code" in a parameter and hopping that the calling program checks it after the call. I don't like to create components that need to be aware of who is going to use them or that deppend on external documentation, because I have found that it creates tight coupling. This technique allows me to create ILERPG methods (aka.procedures) that would "throw" an exception messages so I can be sure that the calling program is aware of the exception and obligated to handle it accordingly. I'm also signing @jacobus' wish list and hope to soon see this features as native functions of ILERPG. Nice article!
Toggle Commented Mar 21, 2012 on RPG Exception Handling at PowerUp
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Mar 21, 2012