I am receiving a message using the Go NSQ library where a field is a slice of map[string]string's. I feel like I should be able to type assert this field as value.([]map[string]string) but it's failing and I can't tell if this is expected or not.
This snippet replicates the behavior https://play.golang.org/p/qcZM880Nal
Why does this type assertion fail?
分享This is covered briefly here in the FAQ.
The types []interface{} and []map[string]string have two different representation in memory. There is no direct way to convert between them.
Also, even when a conversion is allowed, you should note that you can't successfully assert to a different basic type at all (http://play.golang.org/p/zMp1qebIZZ). You can only assert to the original type, or another type of interface,
// panics
var i interface{} = int32(42)
_ = i.(int64)
