I had a performance issue while converting a subroutine to a subprocedure. I searched through my logic looking for reasons, but found nothing wrong. The issue was elsewhere. In this article I show you the pitfall that I discovered and how to avoid it while improving your code to use subprocedures, one of ILE's prettiest features. Yes, converting a subroutine to a subprocedure costs something in CPU cycles, but subprocedures provide nice features such as modularization, ...

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