func (c Caches) Has(cc *Cache) bool {
	for _, c := range c {
		if c.Datfile == cc.Datfile {
			return true
		}
	}
	return false
}
Has return true is Caches has cache cc
package thread
import (
	"sort"
	"github.com/shingetsu-gou/shingetsu-gou/recentlist"
)
type Caches []*Cache