23 golang map詳解下30分52秒主講教師大地

Golangmap TOC\o"1-1"\h\z\u 6、【案例】按照指定順序遍歷 7、元素為map類型的切 8、值為切片類型的 mapkey-value的數(shù)據(jù)結(jié)構(gòu)，Gomap是引用類型，必須初始化Gomap:,funcfuncmain()scoreMapmake(map[string]int,8)scoreMap["張三"]=90scoreMap["小明"]=100fmt.Printf("typeofa:%T\n",scoreMap)}map[小明:100張三:90]typeoffuncfuncmain()userInfo:map[string]string{"username":營小王子""password":}fmt.Println(userInfo)}value,value,ok:=map對(duì)象funcfuncmain()scoreMap:=make(map[string]int)scoreMap["張三"]=90scoreMap[scoreMap["小明"]=v,ok:=scoreMap["張三ifok}elsefuncfuncmain()scoreMap:=make(map[string]int)scoreMap["張三"]=90scoreMap["小明"]=scoreMap["娜扎"]=fork,v:=range{fmt.Println(k,}}funcfuncmain()scoreMap:=make(map[string]int)scoreMap["張三"]=90scoreMap["小明"]=scoreMap["娜扎"]=fork:=range{}}delete(map對(duì)象,funcfuncscoreMap:=make(map[string]int)scoreMap["張三"]=90scoreMap["小明"]=scoreMap["娜扎"]=,fork,v:=scoreMap{fmt.Println(k,}}funcfuncmain()())varscoreMap=make(map[string]int,fori:=0;i<100;i++key:=fmt.Sprintf("stu%02d",i)//成stu串value:=rand.Intn(100) scoreMap[key]=value}varkeys=make([]string,0,200)forkey:=rangescoreMap{keys=append(keys,}for_,key:=range{fmt.Println(key,7、元素為mapfuncfuncmain()varmapSlice=make([]map[string]string,forindex,value:=range{fmt.Printf("index:%dvalue:%v\n",index,}fmt.Println("after//mapmapSlice[0]=make(map[string]string,10)mapSlice[0]["name"]="小王子"mapSlice[0]["password"]="123456"mapSlice[0]["address"]="海淀區(qū)"forindex,value:=range{fmt.Printf("index:%dvalue:%v\n",index,}}funcfuncmain()varsliceMap=make(map[string][]string,3)fmt.Println("afterinit")key:="中國"value,ok:=if!okvalue=make([]string,0,}valuevalue=append(val