Interactive Playground¶

Experiment with Branchline directly in your browser—no installs required. Pick an example, edit the program and input, enable tracing, and run.

Tips: Cmd/Ctrl + Enter runs. Switch JSON/XML input. Toggle tracing for EXPLAIN(...). Changing examples resets the editors.

Open in new tab Use ?example=<id> in the URL to preload an example (e.g., ?example=stdlib-hof-overview).

Curated examples (all preserved)¶

collection-transforms — MAP/FILTER/REDUCE style array work
contract-deep-composition — deep nested output inferred from stdlib-first composition
contract-literal-brackets-static — literal bracket keys inferred as static paths
contract-empty-array-append — stable array element typing via FOR EACH ... WHERE and [] + APPEND
customer-profile — concise profile shaping with FORMAT/GET and CASE fallback
explain-derived-total — enable tracing to see EXPLAIN output
junit-badge-summary — XML normalization via FILTER/MAP/SUM pipelines
order-shipment — shipping snapshot with GET/FORMAT and CASE classification
pipeline-health-gating — CASE-driven health gating with ASSERT/CHECKPOINT + trace
error-handling-try-catch — TRY/CATCH with ASSERT fallbacks
shared-memory-basics — SHARED declarations and writes
Standard library coverage: stdlib-case-basic, stdlib-core-keys-values, stdlib-core-put-delete, stdlib-core-append-prepend, stdlib-core-walk, stdlib-arrays-overview, stdlib-agg-overview, stdlib-strings-casts, stdlib-strings-text, stdlib-numeric-precision, stdlib-hof-overview, stdlib-debug-explain, stdlib-time-now

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