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reflect.StructOf() Function in Golang with Examples

  • Last Updated : 28 Apr, 2020

Go language provides inbuilt support implementation of run-time reflection and allowing a program to manipulate objects with arbitrary types with the help of reflect package. The reflect.StructOf() Function in Golang is used to get the struct type containing fields. To access this function, one needs to imports the reflect package in the program.

Syntax:

func StructOf(fields []StructField) Type

Parameters: This function takes only one parameters of StructFields( fields ).

Return Value: This function returns the struct type containing fields.

Below examples illustrate the use of above method in Golang:



Example 1:




// Golang program to illustrate
// reflect.SliceOf() Function 
  
package main
  
import (
    "fmt"
    "reflect"
)
  
// Main function
func main() {
  
    // use of StructOf method
    typ := reflect.StructOf([]reflect.StructField{
        {
            Name: "Height",
            Type: reflect.TypeOf(float64(0)),
        },
        {
            Name: "Name",
            Type: reflect.TypeOf("abc"),
        },
    })
  
    fmt.Println(typ)
  
}

Output:

struct { Height float64; Name string }

Example 2:




// Golang program to illustrate
// reflect.SliceOf() Function 
  
package main
  
import (
    "fmt"
    "reflect"
)
  
// Main function
func main() {
  
    // use of StructOf method
    tt:= reflect.StructOf([]reflect.StructField{
        {
            Name: "Height",
            Type: reflect.TypeOf(0.0),
            Tag:  `json:"height"`,
        },
        {
            Name: "Name",
            Type: reflect.TypeOf("abc"),
            Tag:  `json:"name"`,
        },
    })
  
    fmt.Println(tt.NumField()) 
    fmt.Println(tt.Field(0))
    fmt.Println(tt.Field(1))
  
}

Output:

2
{Height  float64 json:"height" 0 [0] false}
{Name  string json:"name" 8 [1] false}



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