I hadn't realized you could access variables declared in if statements beyond the first block following the expression. This enables lots of code cleanup :)

if-var-scope-demo.go

package main

import "fmt"

func fab() (int, error) {
	return 0, nil
}

func main() {
	if i, err := fab(); err != nil {
		// Handle error
		fmt.Println("err!")
	} else if i < 0 {
		// Validate
		fmt.Println("bad")
	} else {
		// Handle value
		fmt.Println(i)
	}
}