The REXX Language: Writing Functions and Subroutines in REXX.
Rexx (Restructured Extended Executor) is designed to be a scripting language. Its goal is to make scripting as easy, fast, reliable, and error-free as possible. Many programming languages are designed for compatibility with older languages, and are written for specific audiences or platforms. Rexx ignores extraneous objectives.
You can write your own Functions in REXX, placing them in your script. To identify a Function in your script, you need to put a label at the start of it. Just like you can pass arguments to a built-in function such as TIME(), you can also pass arguments to your own REXX functions by putting those arguments between parentheses.
The first line writes all the data (Number of lines to be written is present as LOT.0, which specifies the number of array occurrences for the array LOT.) into the DD XXOUT, which is our output file RPTCTL. The second line is used to mention that the writing is finished.
A valid REXX expression consisting of terms (strings, symbols, and functions) interspersed with operators and parentheses. If the comparison preceding the expression is true, the expression is interpreted and the results are returned. A valid REXX expression.
Rexx - substr String - This method gets a sub string from a particular string.
REXX Tutorial. REXX for Beginners with examples. Starting from how to write REXX programs, how to execute programs. Covers major part of REXX with examples.
I am working on converting an assembler program to Rexx so it can be supported by programmers that are not familiar with IBM assembler. The assembler program takes a variable input file and turns it into a fixed format file with additional spacing in the record for processing later by other programs.
This book provides a comprehensive reference and programming guide to the Rexx programming lan-guage. It shows how to use the most popular implementations of Rexx and Rexx external function pack-ages and is suited to both the programmer learning Rexx for the first time as well as the seasoned Rexx.
Rexx integrates beautifully with DB2, SDSF etc. Has it crossed your mind, you can write COBOL Programs too, to do all that I've said above. But, as a norm, you generally write programs in COBOL to implement business rules, build an Insurance Product like a Annuities system, or a banking product.
But in case(b) as HEX data was written to file. My question is how to let REXX interpreter know that the variable 'name' in case(a) has HEX data and to be written it as HEX. Hope i made the issue clear. Lemme tread towards a solution.
The REXX PROCEDUREs ReadForm together with MethGet and MethPost, all available in cgi-lib.rxx, may be used to simplify the task of reading input from a Form. Decoding Forms Input When you write a Form, each of your input items has a name tag. When the user places data in these items in the Form, that information is encoded into the Form data.
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When you write abs(-3), REXX interprets it as a call to the absolute value function with -3 as an argument. However, when you put a space in front of the parentheses, REXX interprets this as an implicit abuttal; it assumes that you want to concatenate the string value of the variable 'abs' with the string '-3'.
