Go reflection reflect access to struct structure attention issues

View structure information inside a struct by reflection:

Type point struct {X inty string}func main () {po: = point{3, "ddd"}s: = Reflect. ValueOf (&PO). Elem () for I: = 0; I < S.numfield (); i++ {f: = S.field (i) fmt. Printf ("%s%v \ n", F.type (), F.interface ())}} output: Int 3 string DDD

But the x and y in point are changed to lowercase, x, y, and then the program is executed F. Interface will error:

Panic:reflect. Value.Interface:cannot return value obtained from unexported field or method

Summarize:

Go language inside struct variables if uppercase is public, if the lowercase is private, private when the reflection can not get its value

Go reflection reflect access to struct structure attention issues