setter

Documentation

Overview

Package setter allows for manipulation of a value of an exported field of any struct.

Index

• func Set(strct interface{}, field string, val interface{}) error

Examples

• Set (ErrFieldDoesNotExists)
• Set (ErrNoPtr)
• Set (Ok)

Functions

func Set

func Set(strct interface{}, field string, val interface{}) error

Set assigns the value `val` to the field `field` on the struct `strct`. Unexported fields are supported.

Example (ErrFieldDoesNotExists)

package main

import (
	"fmt"

	"github.com/gomponents/gontainer-helpers/setter"
)

func main() {
	person := struct {
		name string
	}{}
	err := setter.Set(&person, "firstname", "Mary")
	fmt.Println(err)
}

Output:

set `*struct { name string }`."firstname": field `firstname` does not exist

Example (ErrNoPtr)

package main

import (
	"fmt"

	"github.com/gomponents/gontainer-helpers/setter"
)

func main() {
	person := struct {
		name string
	}{}
	err := setter.Set(person, "name", "Mary")
	fmt.Println(err)
}

Output:

expected pointer to struct, struct given

Example (Ok)

package main

import (
	"fmt"

	"github.com/gomponents/gontainer-helpers/setter"
)

func main() {
	person := struct {
		name string
	}{}
	err := setter.Set(&person, "name", "Mary")
	fmt.Println(person.name)
	fmt.Println(err)
}

Output:

Mary
<nil>