grep

type Cache struct {

	// MaxEntries is the maximum number of cache entries before
	// an item is evicted. Zero means no limit.
	MaxEntries int

	// OnEvicted optionally specifies a callback function to be
	// executed when an entry is purged from the cache.
	OnEvicted func(key Key, value Grep)
	// contains filtered or unexported fields
}

type Grep interface {
	Match(string) bool
}

type Key string