upartial

upartial

The upartial package provides functionality to update one Go struct with the values of another struct, using reflection. This package is particularly useful for scenarios where you want to partially update a destination struct with non-nil values from a source struct.

Features

• Automatically updates matching fields between source and destination structs.
• Supports nested structs.
• Allows specifying default values using the upartial tag, which will be used if the corresponding source field is nil.

Usage

package main

type A struct {
	Value0 *string `upartial:"default0"`
	Value1 *int    `upartial:"42"`
}

type B struct {
	Value0 string
	Value1 int
}

func main() {
	src := &A{}
	dest := &B{}
	err := upartial.UpdateStruct(src, dest)
	if err != nil {
		log.Fatal(err)
	}
	// dest will now have Value0 = "default0" and Value1 = 42
}

Author

@Aynakeya (Yiyang Lu)