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maps

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charlie
2022-11-18 16:57:15 +08:00
parent cf30b4eb4c
commit 278c8b4cb7
7 changed files with 124 additions and 85 deletions
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18
maps/map.go
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@ -6,7 +6,11 @@ import (
"golang.org/x/exp/constraints"
)
type Map[K constraints.Ordered, V any] interface {
type hashable interface {
constraints.Integer | constraints.Float | ~string
}
type Map[K hashable, V any] interface {
Set(key K, value V) // 设置值
Get(key K) (value V, ok bool) // 获取值
Exist(key K) bool // 键是否存在
@ -14,19 +18,17 @@ type Map[K constraints.Ordered, V any] interface {
Keys() []K // 获取所有键
Values() []V // 获取所有值
ToMap() map[K]V // 转换为map
Clone() Map[K, V] // 复制
Clear() // 清空
Count() int // 数量
Iter() <-chan *Entry[K, V] // 迭代器
ForEach(f func(K, V) bool) // ForEach
// Iter() <-chan *Entry[K, V] // 迭代器
ForEach(f func(K, V) bool) // ForEach
}
type Entry[K constraints.Ordered, V any] struct {
type Entry[K hashable, V any] struct {
Key K
Value V
}
func Merge[K comparable, V any](mm ...map[K]V) map[K]V {
func Merge[K hashable, V any](mm ...map[K]V) map[K]V {
ret := make(map[K]V)
for _, m := range mm {
for k, v := range m {
@ -38,7 +40,7 @@ func Merge[K comparable, V any](mm ...map[K]V) map[K]V {
}
// 按照键值生成字符串
func Join[K constraints.Ordered, V any](m Map[K, V], sep string, f func(k K, v V) string) string {
func Join[K hashable, V any](m Map[K, V], sep string, f func(k K, v V) string) string {
slice := make([]string, 0, m.Count())
m.ForEach(func(k K, v V) bool {