RPG lacks one feature that other languages have had for a long time- multidimensional arrays. If you need them, you can use single-dimensional arrays instead. The trick is to convert the multidimensional subscripts to single subscripts.
Let's say you need a two-dimensional array that has three rows and five columns. You can use a 15-element, one-dimensional array instead. Row 1 goes in elements 1-5, row 2 in 6-10, and row 3 in 11-15.
To access element (R,C) use the calculation (R-1) * row length + C to find the subscript to the one-dimensional array. In this example, row length is 5 because there are five elements per row. So element (2,4) would be found at (2- 1) * 5 + 4, or element 9 of the one-dimensional array
Ted Holt is IT manager of Manufacturing Systems Development for Day-Brite Capri Omega, a manufacturer of lighting fixtures in Tupelo, Mississippi. He has worked in the information processing industry since 1981 and is the author or co-author of seven books.
MC Press books written by Ted Holt available now on the MC Press Bookstore.
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Business users want new applications now. Market and regulatory pressures require faster application updates and delivery into production. Your IBM i developers may be approaching retirement, and you see no sure way to fill their positions with experienced developers. In addition, you may be caught between maintaining your existing applications and the uncertainty of moving to something new.
IT managers hoping to find new IBM i talent are discovering that the pool of experienced RPG programmers and operators or administrators with intimate knowledge of the operating system and the applications that run on it is small. This begs the question: How will you manage the platform that supports such a big part of your business? This guide offers strategies and software suggestions to help you plan IT staffing and resources and smooth the transition after your AS/400 talent retires. Read on to learn:
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