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src/dictionary.cpp: dropping usage of binary_function #71

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6 changes: 5 additions & 1 deletion mecab/src/dictionary.cpp
Original file line number Diff line number Diff line change
Expand Up @@ -65,7 +65,11 @@ int progress_bar_darts(size_t current, size_t total) {
}

template <typename T1, typename T2>
struct pair_1st_cmp: public std::binary_function<bool, T1, T2> {
struct pair_1st_cmp {
public:
using first_argument_type = bool;
using second_argument_type = T1;
using result_type = T2;
bool operator()(const std::pair<T1, T2> &x1,
const std::pair<T1, T2> &x2) {
return x1.first < x2.first;
Expand Down