> ANALYSIS_OF: BATTLE_BETWEEN_SUB_ROUTINE_VS_SUB_PROCEDURE_-_RPGLE_(IBM_I)_
This video provides a comprehensive analysis of sub routines and sub procedures in RPGLE.
- Sub Routines: These are traditional methods of code reuse in RPG. They allow programmers to define a block of code that can be called multiple times throughout a program. Sub routines do not support parameters, which limits their flexibility.
- Sub Procedures: Introduced in RPG IV, sub procedures enhance modular programming. They support parameters, enabling data to be passed in and out, which promotes better code organization and reusability. Sub procedures can return values, making them more versatile than sub routines.
- Performance: Sub procedures generally offer better performance due to their ability to handle parameters and return values efficiently. This leads to cleaner and more maintainable code.
- Scope and Lifetime: Sub procedures have a defined scope and lifetime, which helps in managing variable visibility and memory usage effectively.
- Best Practices: The video emphasizes using sub procedures for new development to leverage modern programming practices, while sub routines may still be used for legacy code.
SOURCE: YouTube
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