Rexx subroutine. Functions and Subroutines Rexx has them both A function must return a value A su...
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Rexx subroutine. Functions and Subroutines Rexx has them both A function must return a value A subroutine may return a value Rexx uses ‘CALL’ to call a function/subroutine call foo a, b, c A function normally returns a value that is substituted for the function call when the expression is evaluated. Lets look at these functions in detail. Oct 21, 2024 · Subroutines can also call themselves and receive their own return values. Appendix A tells REXX provides a rich set of built-in functions, including character manipulation, conversion, and information functions. 7. Making Variables Private to a Function /* ------------------------------------------------------------------ *//* In REXX, all variables are local to a subroutine Mastering the RETURN instruction to pass values back from subroutines. The key difference between subroutines and functions is that functions return a value whereas subroutines dont. . Using functions helps in segregating the code into many more logical units. As this appendix is intended as a quick reference guide for developers, please see the full ANSI-1996 and TRL-2 standards if more detailed information is required.
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