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Go map 操作： |
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package mainimport "fmt"
func main() { var countryMap map[string]string
/* 创建集合 */
countryMap = make(map[string]string)
/* map 插入 key-value 对，各个国家对应的首都 */
countryMap["ShengRI"] = "1988-04-09"
/* 使用 key 输出 map 值 */
for country := range countryMap {
fmt.Println("Capital of",country,"is",countryMap[country])
}
/* 查看元素在集合中是否存在 */
captial, ok := countryMap["ShengRI"]
/* 如果 ok 是 true, 则存在，否则不存在 */
if(ok){
fmt.Println("Capital of United States is", captial)
}else {
fmt.Println("is not ok")
}
MyMap()
}func MyMap(){ var myMap map[string]string
myMap = make(map[string]string)
myMap["idc_id"] = "2"
myMap["idc_name"] = "BeiJingIDC"
myMap["idc_prod"] = "OpenStack"
myMap["idc_zone"] = "BJ"
myMap["idc_abs"] = "2018-10-02" for m := range myMap{
fmt.Println(m,myMap[m])
}
delete(myMap,"idc_abs")
fmt.Println(myMap)
myMap["idc_abs"] = "2088-10-02" fmt.Println(myMap)
_, ok := myMap["idc_zone"]
if ok {
fmt.Println(myMap["idc_zone"],"is ok")
}
} |
本文转自 swq499809608 51CTO博客，原文链接:http://blog.51cto.com/swq499809608/1920920