reflect.Append() Function in Golang with Examples
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.Append() Function in Golang is used to append appends the values x to a slice s. To access this function, one needs to imports the reflect package in the program.
Syntax:
func Append(s Value, x ...Value) Value
Parameters: This function takes the following parameters:
- s: This parameter is the slice where values are to be append.
- x: These parameter are values to be append.
Return Value: This function returns the resulting slice.
Below examples illustrate the use of above method in Golang:
Example 1:
package main
import (
"fmt"
"reflect"
)
func main() {
a := [] int {2, 5}
var b reflect.Value = reflect.ValueOf(&a)
b = b.Elem()
fmt.Println( "Slice :" , a)
b = reflect.Append(b, reflect.ValueOf(80))
fmt.Println( "Slice after appending data:" , b)
}
|
Output:
Slice : [2 5]
Slice after appending data: [2 5 80]
Example 2:
package main
import (
"fmt"
"reflect"
)
func main() {
var str []string
var v reflect.Value = reflect.ValueOf(&str)
v = v.Elem()
v = reflect.Append(v, reflect.ValueOf( "a" ))
v = reflect.Append(v, reflect.ValueOf( "b" ))
v = reflect.Append(v, reflect.ValueOf( "c" ), reflect.ValueOf( "j, k, l" ))
fmt.Println( "Our value is a type of :" , v.Kind())
vSlice := v.Slice(0, v.Len())
vSliceElems := vSlice.Interface()
fmt.Println( "With the elements of : " , vSliceElems)
}
|
Output:
Our value is a type of : slice
With the elements of : [a b c j, k, l]
Last Updated :
28 Apr, 2020
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