focus/map/hashmap/hashmap.go
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2019-05-08 10:42:51 +08:00

64 lines
1.1 KiB
Go

package hashmap
import "fmt"
type HashMap struct {
hm map[interface{}]interface{}
}
// New instantiates a hash map.
func New() *HashMap {
return &HashMap{hm: make(map[interface{}]interface{})}
}
// Put inserts element into the map.
func (hm *HashMap) Put(key interface{}, value interface{}) {
hm.hm[key] = value
}
func (hm *HashMap) Get(key interface{}) (value interface{}, isfound bool) {
value, isfound = hm.hm[key]
return
}
func (hm *HashMap) Remove(key interface{}) {
delete(hm.hm, key)
}
func (hm *HashMap) Empty() bool {
return len(hm.hm) == 0
}
func (hm *HashMap) Size() int {
return len(hm.hm)
}
func (hm *HashMap) Keys() []interface{} {
keys := make([]interface{}, len(hm.hm))
count := 0
for key := range hm.hm {
keys[count] = key
count++
}
return keys
}
func (hm *HashMap) Values() []interface{} {
values := make([]interface{}, len(hm.hm))
count := 0
for _, value := range hm.hm {
values[count] = value
count++
}
return values
}
func (hm *HashMap) Clear() {
hm.hm = make(map[interface{}]interface{})
}
func (hm *HashMap) String() string {
str := fmt.Sprintf("%v", hm.hm)
return str
}