我有一个地图,其值为一组地图.
例：
thisMap["coins"][0] = aMap["random":"something"] thisMap["notes"][1] = aMap["not-random":"something else"] thisMap["coins"][2] = aMap["not-random":"something else"]
我无法弄清楚如何做到这一点似乎只允许在处理maps [name] [value] = value时在一个级别设置数据.
到目前为止,我的代码失败了
package main
func main() {
something := []string{"coins","notes","gold?","coins","notes"}
thisMap := make(map[string][]map[string]int)
for k,v := range something {
aMap := map[string]string{
"random": "something",}
thisMap[v] = [k]aMap
}
}
编辑：切片值(“硬币”,“注释”等)可以重复,所以这就是我需要使用索引[]的原因.
工作实例(
click to play)：
something := []string{"coins","gold?"}
thisMap := make(map[string][]map[string]int)
for _,v := range something {
aMap := map[string]int{
"random": 12,}
thisMap[v] = append(thisMap[v],aMap)
}
迭代新创建的thisMap时,需要为新值aMap腾出空间.内置函数append在使用切片时为您执行此操作.它腾出空间并将值附加到切片上.
如果您正在使用无法像切片一样轻松初始化的更复杂的数据类型,则首先必须检查密钥是否已在映射中,如果不是,则初始化数据类型. here记录了检查地图元素.地图示例(click to play)：
thisMap := make(map[string]map[string]int)
for _,v := range something {
if _,ok := thisMap[v]; !ok {
thisMap[v] = make(map[string]int)
}
thisMap[v]["random"] = 12
}
