1// +build go1.9
2
3package csvutil
4
5import (
6	"sync"
7)
8
9var fieldCache sync.Map // map[typeKey][]field
10
11func cachedFields(k typeKey) fields {
12	if v, ok := fieldCache.Load(k); ok {
13		return v.(fields)
14	}
15
16	v, _ := fieldCache.LoadOrStore(k, buildFields(k))
17	return v.(fields)
18}
19