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Patternia v0.7.4 Release Note

Release Date: February 18, 2026
Version: 0.7.4

Overview

Patternia v0.7.4 is a follow-up performance and engineering patch release. Compared with v0.7.3, this version reduces extra work in guarded/typed match evaluation paths, expands regression coverage for binding behavior, and stabilizes variant benchmark and CI verification workflows.

Highlights

Match Evaluation Performance Refinements

  • Guarded-case evaluation now avoids redundant binding work in the matched path.
  • Typed-eval variant dispatch now takes a lower-overhead path for zero-bind cases.

Test Coverage Expansion

  • Added bind-count regression tests for guarded match flow to validate that matched guarded paths bind once (instead of legacy two-bind behavior).
  • Added explicit guarded-path sequence checks to keep bind-order semantics locked down.

Variant-Focused Benchmarking

  • Added variant-focused microbench coverage for dispatch-sensitive scenarios.
  • Registered variant benchmark cases with a stable run profile so cross-run comparisons are less noisy.

CI and Pipeline Improvements

  • Added benchmark gate workflow to track benchmark regressions in CI.
  • Tightened default CI pipelines for faster and clearer quality feedback.

Compatibility Notes

  • API surface: unchanged for 0.7.x users.
  • Source compatibility: unchanged.
  • Runtime behavior: same external semantics; internal evaluation paths are optimized and validated with new regression tests.

Implementation Notes

  • include/ptn/core/common/eval.hpp
  • Reduced redundant work in guarded/typed evaluation internals.
  • tests/tests_match_flow.cpp
  • Added guarded bind-count regression cases.
  • bench/bench_match_variant.cpp
  • Added variant-focused microbench case and stable benchmark profile.
  • .github/workflows/ci.yml
  • Updated CI flow and benchmark gate coverage.