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[array] Use dagger for hashing array 

Also switch to better mixing.
This commit is contained in:
Behdad Esfahbod 2019-04-02 18:22:39 -07:00
parent b6f29bf141
commit d0da547b37
1 changed files with 5 additions and 4 deletions
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9
src/hb-array.hh
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@ -278,10 +278,11 @@ hb_sorted_array (T (&array_)[length_])
template <typename T> template <typename T>
uint32_t hb_array_t<T>::hash () const uint32_t hb_array_t<T>::hash () const
{ {
uint32_t h = 0; return
for (unsigned i = 0; i < length; i++) + hb_iter (this)
h ^= hb_hash (arrayZ[i]); | hb_map (hb_hash)
return h; | hb_reduce ([] (uint32_t a, uint32_t b) -> uint32_t { return a * 31 + b; }, 0)
;
} }
typedef hb_array_t<const char> hb_bytes_t; typedef hb_array_t<const char> hb_bytes_t;