Lessons

Short, practical IBM i programming lessons.

Focused examples for RPG, SQLRPGLE, Db2 for i, APIs, DevOps, security, monitoring, and modern IBM i development.

Lesson 1RPG · 4 min read

RPG ASSERT-T and ASSERT-F: Defensive Programming on IBM i

Learn how to use RPG ASSERT-T and ASSERT-F to document and check assumptions in your code with short, practical examples.

IBM iRPGASSERT-TASSERT-FDefensive Programming