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Add const coeffRef definitions for the Holder class #3352

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Merged
SteveBronder merged 1 commit into from
Jul 22, 2026
+7 −0
Merged

Add const coeffRef definitions for the Holder class #3352

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7 changes: 7 additions & 0 deletions stan/math/prim/meta/holder.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -169,6 +169,13 @@ class Holder
auto* data() { return m_arg.data(); }
const auto* data() const { return m_arg.data(); }

const auto& coeffRef(Eigen::Index row, Eigen::Index col) const {
return m_arg.coeffRef(row, col);
}
const auto& coeffRef(Eigen::Index index) const {
return m_arg.coeffRef(index);
}

/**
* Assignment operator assigns expressions.
* @param other expression to assign to this
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