KVStore with map

KVStore_map.go

package KVStore

type Item struct {
	Key string
	Val int
}

type Store map[string]int

// Checks if the item exists in the store. If the key exists it returns the value else it returns -1.
func (s Store) checkIfItemsExistsInStore(key string) int {
	if value, ok := s[key]; !ok{
		return -1
	} else {
		return value
	}
}

// Get returns value associated with key, if the item exists or else returns -1.
func (s Store) Get(key string) int {
	return s.checkIfItemsExistsInStore(key)
}

// Put inserts the given item in the store. On success, it returns a 0 and if the item already exists it returns a -1.
func (s Store) Put(item Item) int {
	index := s.checkIfItemsExistsInStore(item.Key)
	if index == -1 {
		s[item.Key] = item.Val
		return 0
	}
	return -1
}