### 安全map
```go
package main
import (
"fmt"
"sync"
)
// NewSafeMap 初始化SafeMap
func NewSafeMap() *SafeMap {
return &SafeMap{
Data: map[string]interface{}{},
}
}
// SafeMap 安全Map
type SafeMap struct {
Data map[string]interface{} // 自定義map
Lock sync.RWMutex
}
// Load Get方法
func (c *SafeMap) Load(k string) interface{} {
c.Lock.RLock()
defer c.Lock.RUnlock()
if v, exit := c.Data[k]; exit {
return v
}
return nil
}
// Store Set方法
func (c *SafeMap) Store(k string, v interface{}) {
c.Lock.Lock()
defer c.Lock.Unlock()
if c.Data == nil {
c.Data = make(map[string]interface{})
}
c.Data[k] = v
}
func main() {
m := SafeMap{
Data: make(map[string]interface{}),
}
var wg sync.WaitGroup
loopCount := 10
wg.Add(loopCount)
for i := 0; i < loopCount; i++ {
num := i
go func() {
m.Store(fmt.Sprintf("%d", num), num+1)
wg.Done()
}()
}
wg.Wait()
m.Data["3"] = 18
fmt.Println(m.Data)
}
```
