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labels: ensure c++17 compatibility

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This broke the build earlier.
This commit is contained in:
Dirk-Jan C. Binnema
2025-08-16 08:43:41 +03:00
parent d843c9eb8e
commit f504289a02
2 changed files with 10 additions and 5 deletions
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12
lib/message/mu-labels.cc
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@ -99,6 +99,12 @@ Mu::Labels::parse_delta_label(const std::string &expr)
return Ok(DeltaLabel{std::move(delta), std::move(label)});
}
struct cmp_delta_label { // can not yet be a λ in C++17
bool operator()(const DeltaLabel& dl1, const DeltaLabel& dl2) const {
return dl1.second < dl2.second;
}
};
std::pair<LabelVec, DeltaLabelVec>
Mu::Labels::updated_labels(const LabelVec& labels, const DeltaLabelVec& deltas)
{
@ -108,11 +114,9 @@ Mu::Labels::updated_labels(const LabelVec& labels, const DeltaLabelVec& deltas)
// comparison operator so "add" and "remove" deltas are considered "the same"
// for the set; then fill the set from the end of the deltas vec to the begining,
// so "the last one wins", as we want.
const auto cmp_delta_label=[](const DeltaLabel& dl1, const DeltaLabel& dl2) {
return dl1.second < dl2.second;
};
// only one change per label, last one wins
std::set<DeltaLabel, decltype(cmp_delta_label)> working_deltas{
std::set<DeltaLabel, cmp_delta_label> working_deltas{
deltas.rbegin(), deltas.rend()
};