Go实例: Maps
package main
import "fmt"
func main() {
m := make(map[string]int)
m["k1"] = 7
m["k2"] = 13
fmt.Println("map:", m)
v1 := m["k1"]
fmt.Println("v1: ", v1)
fmt.Println("len:", len(m))
delete(m, "k2")
fmt.Println("map:", m)
_, prs := m["k2"]
fmt.Println("prs:", prs)
n := map[string]int{"foo": 1, "bar": 2}
fmt.Println("map:", n)
}$ go run maps.go
map: map[k1:7 k2:13]
v1: 7
len: 2
map: map[k1:7]
prs: false
map: map[bar:2 foo:1]
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