type A string
type B []string
func main() {
one := "string"
two := []string{"string"}
var a A
var b B
b = two
a = one // cannot use one (type string) as type A in assignment
} in the code above, it"s easy to understand that a=one is incorrect, thinking that An is already a new type
so why is b=two OK? How to understand?
this thing can be regarded as a go trap, or you can call it a feature (/ laugh)
for slice type, as long as the underlying type is the same, it is considered to be the same type. You can replace B with type B [] A and try
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