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[algs] Add hb_first() and hb_second()

This commit is contained in:
Behdad Esfahbod 2019-01-09 09:03:21 -08:00
parent a7de144df3
commit f27607580e
1 changed files with 7 additions and 0 deletions
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7
src/hb-dsalgs.hh
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@ -38,6 +38,8 @@
template <typename T1, typename T2>
struct hb_pair_t
{
typedef T1 first_t;
typedef T2 second_t;
typedef hb_pair_t<T1, T2> pair_t;
hb_pair_t (const T1& a, const T2& b) : first (a), second (b) {}
@ -51,6 +53,11 @@ struct hb_pair_t
template <typename T1, typename T2> static inline hb_pair_t<T1, T2>
hb_pair (T1 a, T2 b) { return hb_pair_t<T1, T2> (a, b); }
template <typename Pair> inline typename Pair::first_t
hb_first (const Pair& pair) { return pair.first; }
template <typename Pair> inline typename Pair::second_t
hb_second (const Pair& pair) { return pair.second; }
/*
* Bithacks.