27 lines
548 B
Go
27 lines
548 B
Go
package main
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import "fmt"
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func main() {
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var a [7]int = [7]int{4, 5, 6, 6, 4, 7, 7}
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var slice []int = a[2:4]
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fmt.Println(len(slice))
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slice2 := append(slice, 55, 55)
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fmt.Println(slice2)
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fmt.Println(len(slice2))
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//默认分配10个空间
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var ip map[int]string
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//key不能重复,前面会替换后面那个 value 可以重复
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ip = make(map[int]string, 10)
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ip[103883] = "张三"
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ip[173718] = "李四"
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ip[173718] = "李"
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fmt.Println(ip)
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//查找
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value, flag := ip[103883]
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fmt.Println(value)
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fmt.Println(flag)
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fmt.Println(len(ip))
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}
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