Use of the structure in go

This is a creation in Article, where the information may have evolved or changed.

Structure to write a small piece of code, incredibly such a hole, it seems that the basis of the front is still not playing well ah.

Start writing the structure code is like this, the result is not come out, reported the following error:

Missing type in composite literal

The code is as follows:

Package Main

Import (
"Encoding/json"
"FMT"
)

Type person struct {
Username string
Age int
Friend []string
ADDR string
}

Func Testjson () {
P1: = &person{
"Zhangsan",
25,
{"Lisi", "Wangwu"},
"Jinlin China",
}
P, err: = json. Marshal (p1)
If err! = Nil {
Fmt. Print (Err. Error ())
}
Fmt. Print (P)
}
Func Main () {
Testjson ()
}

Finally looked at the basic tutorial, and then check the information, finally understand.

The modified code follows, finally successfully print JSON binary data, burst into tears. The Declaration and assignment of an array would look like this.

s: = []string{"value 1", "Value 2"}, so when the struct is initialized, the array must be preceded by a type.

Package Main

Import (
"Encoding/json"
"FMT"
)

Type person struct {
Username string
Age int
Friend []string
ADDR string
}

Func Testjson () {
P1: = &person{
"Zhangsan",
25,
[]string{"Lisi", "Wangwu"},
"Jinlin China",
}
P, err: = json. Marshal (p1)
If err! = Nil {
Fmt. Print (Err. Error ())
}
Fmt. Print (P)
}
Func Main () {
Testjson ()
}