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- // Dup1 prints the text of each line that appears more than
- // once in the standard input, preceded by its count.
- package main
- import "fmt"
- func main() {
- //这里是 代码包 共享变量的测试
- // dup1
- //fmt.Printf("dup1:\n")
- //Dup1()
- //dup2
- //fmt.Printf("dup2:\n")
- //DUP2()
- //fmt.Printf("dup3:\n")
- //DUP3()
- counts := make(map[string]int)
- fatherCounts := make(map[string]map[string]int)
- counts["A"] = 1
- counts["B"] = 2
- fatherCounts["A"] = counts
- fmt.Printf("%d\n",counts["A"])
- delete(fatherCounts["A"],"A")
- fmt.Printf("A:%d,B:%d,C:%d\n", fatherCounts["A"]["A"],fatherCounts["A"]["B"],fatherCounts["A"]["C"]) //默认值会赋0
- for key := range fatherCounts {
- fmt.Printf("key:%s",key)
- }
- }
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