copier

Documentation

Overview

Package copier allows for copying a value to a variable with an unknown type.

Index

• func Copy(from interface{}, to interface{}) (err error)

Examples

• Copy (Err)
• Copy (Ok)

Functions

func Copy

func Copy(from interface{}, to interface{}) (err error)

Copy copies a value of `from` to `to`.

from := 5
b := 0
Copy(from, &to)
fmt.Println(to) // 5

Example (Err)

package main

import (
	"fmt"

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

func main() {
	var (
		from float32 = 5
		to   uint    = 0
	)
	err := copier.Copy(from, &to)
	fmt.Println(to)
	fmt.Println(err)
}

Output:

0
reflect.Set: value of type float32 is not assignable to type uint

Example (Ok)

package main

import (
	"fmt"

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

func main() {
	var (
		from = 5
		to   = 0
	)
	err := copier.Copy(from, &to)
	fmt.Println(to)
	fmt.Println(err)
}

Output:

5
<nil>