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[iter] Use forwarding references

This commit is contained in:
Behdad Esfahbod 2019-01-09 12:42:01 -08:00
parent 528ea66f24
commit 471e96e55d
1 changed files with 6 additions and 6 deletions
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12
src/hb-iter.hh
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@ -210,7 +210,7 @@ template <typename Iter, typename Proj,
struct hb_map_iter_t :
hb_iter_t<hb_map_iter_t<Iter, Proj>, decltype (hb_declval (Proj) (hb_declval (typename Iter::item_t)))>
{
hb_map_iter_t (const Iter& it, Proj f) : it (it), f (f) {}
hb_map_iter_t (const Iter& it, Proj&& f) : it (it), f (f) {}
typedef decltype (hb_declval (Proj) (hb_declval (typename Iter::item_t))) __item_t__;
enum { is_random_access_iterator = Iter::is_random_access_iterator };
@ -230,7 +230,7 @@ struct hb_map_iter_t :
template <typename Proj>
struct hb_map_iter_factory_t
{
hb_map_iter_factory_t (Proj f) : f (f) {}
hb_map_iter_factory_t (Proj&& f) : f (f) {}
template <typename Iterable,
hb_enable_if (hb_is_iterable (Iterable))>
@ -242,7 +242,7 @@ struct hb_map_iter_factory_t
};
template <typename Proj>
inline hb_map_iter_factory_t<Proj>
hb_map (Proj f)
hb_map (Proj&& f)
{ return hb_map_iter_factory_t<Proj> (f); }
template <typename Iter, typename Pred, typename Proj,
@ -251,7 +251,7 @@ struct hb_filter_iter_t :
hb_iter_t<hb_filter_iter_t<Iter, Pred, Proj>, typename Iter::item_t>,
hb_iter_mixin_t<hb_filter_iter_t<Iter, Pred, Proj>, typename Iter::item_t>
{
hb_filter_iter_t (const Iter& it_, Pred p, Proj f) : it (it_), p (p), f (f)
hb_filter_iter_t (const Iter& it_, Pred&& p, Proj&& f) : it (it_), p (p), f (f)
{ while (it && !p (f (*it))) ++it; }
typedef typename Iter::item_t __item_t__;
@ -269,7 +269,7 @@ struct hb_filter_iter_t :
template <typename Pred, typename Proj>
struct hb_filter_iter_factory_t
{
hb_filter_iter_factory_t (Pred p, Proj f) : p (p), f (f) {}
hb_filter_iter_factory_t (Pred&& p, Proj&& f) : p (p), f (f) {}
template <typename Iterable,
hb_enable_if (hb_is_iterable (Iterable))>
@ -282,7 +282,7 @@ struct hb_filter_iter_factory_t
};
template <typename Pred, typename Proj>
inline hb_filter_iter_factory_t<Pred, Proj>
hb_filter (Pred p, Proj f)
hb_filter (Pred&& p, Proj&& f)
{ return hb_filter_iter_factory_t<Pred, Proj> (p, f); }
/* hb_zip() */