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[WIP] Find and update std::optional usage in code base (#8272)

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* Initial plan

* Add try_get_value for std::map and use it in var_register.h and dioph_eq.cpp

Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>

* Add try_get_value overload for unordered_map with custom hash and use in lar_solver.cpp

Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>

* Remove redundant try_get_value template overload

Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>

* Remove std::map include and try_get_value overload from lp_utils.h

Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>
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Copilot 2026-01-21 19:55:36 -08:00 • committed by GitHub
parent b0313ca80a
commit c392592831
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4 changed files with 47 additions and 47 deletions
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6
src/math/lp/dioph_eq.cpp
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@ -1000,11 +1000,11 @@ namespace lp {
void find_changed_terms_and_more_changed_rows() {
for (unsigned j : m_changed_f_columns) {
const auto it = m_columns_to_terms.find(j);
if (it != m_columns_to_terms.end())
for (unsigned k : it->second) {
if (auto terms = try_get_value(m_columns_to_terms, j)) {
for (unsigned k : *terms) {
mark_term_change(k);
}
}
if (!m_var_register.external_is_used(j))
continue;
for (const auto& p : m_e_matrix.column(this->lar_solver_to_local(j))) {