feat(concepts): add C++20 concepts for operators, metrics, and policy types - #67

Merged

foolnotion merged 10 commits into

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feature/concepts

Jun 4, 2026

Commits on Jun 3, 2026

feat(concepts): add operator and policy concepts to concepts.hpp
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a406611
feat(concepts): apply concept constraints to error metrics and evaluators
foolnotion
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dfc2fdd
fix(error_metrics): use std::next instead of iterator + distance
foolnotion
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a4c0419
fix(error_metrics): constrain iterator overloads to std::random_access_iterator
foolnotion
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0e85c13
perf(error_metrics): use vstat SIMD-optimized metric functions
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142ec34
fix(r2_score): revert to accumulate formula; keep contiguous_iterator constraint
foolnotion
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072bfce
fix(r2_score): correct comment on SIMD path avoidance
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122937f
fix(r2_score): use vstat SIMD path; fix weighted R2 reference in test
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40d02c8
refactor(concepts): rename ErrorMetric/Evaluator concepts to avoid name clash
foolnotion
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add9a8f

Commits on Jun 4, 2026

refactor(error_metrics): unify iterator constraints to std::contiguous_iterator
foolnotion
committed
a4ed4bc