Go Multiple Variables

How it works

A declaration or assignment can contain several names. The right-hand values are evaluated before assignment, which also makes swapping possible. A short declaration may reuse a name in the same scope if at least one non-blank name is new.

Run this Go example

Install Go separately from the official Go downloads and check go version in a new terminal. The reviewed baseline is Go 1.27.3 on Windows amd64; the authored syntax and standard-library APIs require Go 1.22 or newer. Save the complete source below as multiple-variables.go in a learning folder, then run go run multiple-variables.go from that folder. These examples use only the standard library.

Bhylu has no Go browser runner. Apache, MySQL, PHP and the JavaScript or Python playground are not required to run these files. File examples own a temporary directory; HTTP client examples create an ephemeral loopback server and close it. They do not contact an external API.

Download the complete multiple-variables.go · Download all source files with hash checks

For the optional collection download, save download-examples.mjs in a new learning folder and run node download-examples.mjs. A local preview uses node download-examples.mjs http://127.0.0.1:8000/examples/go/. The downloader refuses an existing bhylu-go-examples folder and installs or executes no Go code.

Example

package main

import (
	"fmt"
)

func main() {
	small, large := 3, 1
	small, large = large, small
	var incoming, collected int = 2, 4
	fmt.Println(small, large, incoming, collected)
}

Expected result

1 3 2 4

The swap uses the old pair of values. The later declaration gives both names the same explicit type. Group names only when their relationship helps the reader.