Instructor Notes

This lesson assumes learners already have a working eic-shell environment and a checkout of EICrecon; make sure they have completed the Setup page before the session, since building EICrecon from scratch can take a while.

Emphasis

---

• The single most important conceptual point is the split between framework-independent algorithms (src/algorithms) and framework-facing factories (src/factories). Keep returning to it — most of the later episodes are variations on this theme.
• JOmniFactory is the only factory base class learners need to write new code. Mention the older base classes only so learners recognize them in existing code.

Pacing

---

• Episodes 02–07 build up a single running example (the electron finder). Encourage learners to keep their own EICrecon checkout open and edit along, rather than only reading.
• The exercises are cumulative: each one extends the factory/algorithm from the previous episode. If a learner falls behind, the final code in episode 07 (“Putting everything together”) can be used as a reference to catch up.

Introduction

---

Creating a factory

---

Calling a factory

---

Parameterizing a factory

---

Adding an algorithm

---

Working with PODIO

---

Putting everything together

---