IBMi (AS400) Difference Between %Scan and %Check | rpgle programming tutorial | as400 for beginners

This video tutorial focuses on the differences between the %SCAN and %CHECK built-in functions in RPGLE.

• %SCAN: This function finds the position of a substring within a string. The tutorial covers its syntax, parameters, and practical examples of how to use %SCAN to locate characters or strings efficiently.
• %CHECK: In contrast, %CHECK determines the position of the first character in a string that is not part of a specified set of characters. The video explains its syntax and provides examples to illustrate its usage in validating input or filtering data.
• Practical Applications: The tutorial includes scenarios where each function is best suited, helping programmers understand when to use %SCAN versus %CHECK in their RPGLE code.
• Performance Considerations: The video discusses performance implications when using these functions, guiding programmers on how to write efficient code.
• Common Mistakes: The presenter highlights common pitfalls and mistakes that beginners often make when using these functions, providing tips on how to avoid them.

Overall, this video serves as a foundational resource for RPGLE programmers, especially beginners, to enhance their string manipulation skills and improve their coding practices on the IBM i platform.