Add chapter 08 — Conditional & Coalescing Sources (Case / Coalesce) - #3
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New example chapter demonstrating the Case and Coalesce combinator primitives: - Case on a unit flag (kg vs lbs) selecting a per-branch conversion - Case with multi-operand branches (feet+inches / meters+cm summed via combine) - Coalesce picking the first populated source (age in years OR months) Built to the chapter convention (build_rules.py source of truth; rules.json + rules.yaml; run_python/run_yaml/run_cli; expected_output.csv golden master). All three interfaces pass and agree. The Clinical Intake Showcase moves from 08 to 09 so the realistic blend-of-all chapter stays last. Catalog and chapter headers renumbered accordingly. Requires the Case/Coalesce primitives (harmonization-framework PR #113). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Adds a new example chapter demonstrating the
CaseandCoalescecombinator primitives (harmonization-framework PR bmir-radx/harmonization-framework#113).What's new
Chapter 08 — Conditional & Coalescing Sources (
examples/08-conditional-and-coalesce/):Caseon a unit flag —weight_units(1=kg, 2=lbs) selects a per-branch conversion: lbs as-is, or kg→lbs.Casewith multi-operand branches — height as feet+inches OR meters+cm, each branch summing two converted operands viacombine: sum.Coalesce— age reported in years OR months (no flag); first populated source wins, months→years rounded.Built to the chapter convention:
build_rules.pyis the source of truth;rules.json+rules.yaml;run_python.py/run_yaml.py/run_cli.sh;expected_output.csvgolden master. All three interfaces pass and agree.Reordering
The Clinical Intake Showcase moves from chapter 08 to 09, so the realistic blend-of-everything chapter stays last. Catalog table and chapter headers renumbered accordingly (
git mvpreserves the showcase's history).Dependency
Requires the
Case/Coalesceprimitives, which are in bmir-radx/harmonization-framework#113 — merge that first.🤖 Generated with Claude Code