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set.go
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set.go
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package base
import (
"fmt"
"strings"
)
// Set 通用set.
type Set[K comparable] map[K]struct{}
// NewSet 新建set.
func NewSet[K comparable](elems ...K) Set[K] {
return Set[K]{}.Add(elems...)
}
// Add 增加.
func (set Set[K]) Add(elems ...K) Set[K] {
for _, s := range elems {
set[s] = None
}
return set
}
// AddSet 增加set.
func (set Set[K]) AddSet(elems ...Set[K]) Set[K] {
for _, elem := range elems {
for i := range elem {
set[i] = None
}
}
return set
}
// Any 包含任意个.
func (set Set[K]) Any(keys ...K) bool {
for _, key := range keys {
if _, has := set[key]; has {
return true
}
}
return false
}
// All 包含全部.
func (set Set[K]) All(keys ...K) bool {
for _, key := range keys {
if _, has := set[key]; !has {
return false
}
}
return true
}
// Del 删除.
func (set Set[K]) Del(keys ...K) Set[K] {
for _, key := range keys {
delete(set, key)
}
return set
}
// DelSet 删除set.
func (set Set[K]) DelSet(elems ...Set[K]) Set[K] {
for _, elem := range elems {
for i := range elem {
delete(set, i)
}
}
return set
}
// Has 包含.
func (set Set[K]) Has(key K) bool {
_, has := set[key]
return has
}
// Join 集合连接.
func (set Set[K]) Join(sep string) string {
elems := set.Slice()
switch len(elems) {
case 0:
return ""
case 1:
return fmt.Sprintf("%v", elems[0])
}
var builder strings.Builder
builder.WriteString(fmt.Sprintf("%v", elems[0]))
for _, elem := range elems[1:] {
builder.WriteString(sep)
builder.WriteString(fmt.Sprintf("%v", elem))
}
return builder.String()
}
// Slice 转换切片.
func (set Set[K]) Slice() []K {
keys := make([]K, 0, len(set))
for k := range set {
keys = append(keys, k)
}
return keys
}
// String 字符串.
func (set Set[K]) String() string {
return "Set[" + set.Join(" ") + "]"
}