33 lines
438 B
Go
33 lines
438 B
Go
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package main
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import (
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"fmt"
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"strconv"
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"sync"
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)
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// GO内置的map不是并发安全的
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var m = make(map[string]int)
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func get(key string) int {
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return m[key]
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}
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func set(key string, value int) {
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m[key] = value
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}
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func main() {
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wg := sync.WaitGroup{}
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for i := 0; i < 10; i++ {
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wg.Add(1)
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go func(n int) {
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key := strconv.Itoa(n)
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set(key, n)
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fmt.Printf("k=:%v,v:=%v\n", key, get(key))
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wg.Done()
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}(i)
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}
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wg.Wait()
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}
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