方式1:定义,同时赋值
var heroes map[string]string = map[string]string{
"heroe1": "卢俊义",
"heroe2": "林冲",
}
heroes["heroe3"] = "阮小七"
fmt.Println("方式2: ", heroes)
方式1-2:类型推导,同时赋值(推荐)
heroes2 := map[string]string{
"heroe1": "卢俊义",
"heroe2": "林冲",
}
heroes2["heroe3"] = "阮小七"
fmt.Println("方式2-2: ", heroes2)
方式1-3:先类型推导来定义,后赋值(推荐)
heroes3 := map[string]string{
}
heroes3["heroe1"] = "武松"
fmt.Println("方式1-3: ", heroes3)
方式2:make先定义,再初始化,接着再赋值
var cities3 map[string]string
cities3 = make(map[string]string)
cities3["no1"] = "黑龙江"
cities3["no2"] = "吉林"
cities3["no3"] = "辽宁"
fmt.Println("方式2: ", cities3)
方式2-2: make,定义并初始化
var cities map[string]string = make(map[string]string)
cities["no1"] = "黑龙江"
cities["no2"] = "吉林"
cities["no3"] = "辽宁"
fmt.Println("方式2-2: ", cities)
方式2-3:make,类型推导来定义(推荐)
cities2 := make(map[string]string)
cities2["no1"] = "黑龙江"
cities2["no2"] = "吉林"
cities2["no3"] = "辽宁"
fmt.Println("方式2-3: ", cities2)