有像BidiMap这样的东西吗？

Hi I need to do some bidirectional lockup and need some caind of map structure like map[key][key] are there some think like that in Go? Or what is the best way to go about doing it?

There's no such thing in the language or the library (AFAIK), but they're easy enough to implement: just combine two maps in a struct and make sure they stay in sync. The only problem is that it's hard to write these in a generic manner, but that can be done using interface{}:

type BidirMap struct {
    left, right map[interface{}]interface{}
}

func (m *BidirMap) Insert(key, val interface{}) {
    if _, inleft := left[key]; inleft {
        delete(left, key)
    }
    if _, inright := right[val]; inright {
        delete(right, val)
    }
    m.left[key] = val
    m.right[val] = key
}

etc.