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Refactor - use std::tie for comparator.

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This commit is contained in:
Kishore Nallan 2017-01-11 20:43:55 +05:30
parent b7654baa74
commit a67e8f4caa
1 changed files with 5 additions and 8 deletions
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13
include/topster.h
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@ -95,20 +95,17 @@ struct Topster {
}
static bool is_greater(const struct KV& i, uint64_t match_score, int64_t primary_attr, int64_t secondary_attr) {
if(i.match_score != match_score) return match_score > i.match_score;
if(i.primary_attr != primary_attr) return primary_attr > i.primary_attr;
return secondary_attr > i.secondary_attr;
return std::tie (match_score, primary_attr, secondary_attr) >
std::tie (i.match_score, i.primary_attr, i.secondary_attr);
}
static bool is_greater_kv(const struct KV &i, const struct KV &j) {
if(i.match_score != j.match_score) return i.match_score > j.match_score;
if(i.primary_attr != j.primary_attr) return i.primary_attr > j.primary_attr;
if(i.secondary_attr != j.secondary_attr) return i.secondary_attr > j.secondary_attr;
return i.key > j.key;
return std::tie(i.match_score, i.primary_attr, i.secondary_attr, i.key) >
std::tie(j.match_score, j.primary_attr, j.secondary_attr, j.key);
}
void sort() {
std::stable_sort(std::begin(data), std::begin(data) + size, is_greater_kv);
std::sort(std::begin(data), std::begin(data) + size, is_greater_kv);
}
void clear(){