[algs] Fix hb_first() / hb_second()
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@ -56,13 +56,13 @@ hb_pair (T1 a, T2 b) { return hb_pair_t<T1, T2> (a, b); }
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static struct
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{
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template <typename Pair> typename Pair::first_t
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operator () (const Pair& pair) { return pair.first; }
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operator () (const Pair& pair) const { return pair.first; }
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} hb_first;
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static struct
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{
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template <typename Pair> typename Pair::second_t
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operator () (const Pair& pair) { return pair.second; }
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operator () (const Pair& pair) const { return pair.second; }
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} hb_second;
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