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1. Go 基础语法¶

1.1 标准库¶

make(map[key-type]value-type)

m := make(map[string]int)

带数据初始化

commits := map[string]int{
    "rsc": 3711,
    "r":   2138,
    "gri": 1908,
    "adg": 912,
}

创建空 map

m = map[string]int{}

m["route"] = 66

i := m["route"]
i, ok := m["route"]
_, ok := m["route"]

n := len(m)

delete(m, "route")

for key, value := range m {
    fmt.Println("Key:", key, "Value:", value)
}