recovering_from_panic.go

package main

import (
	"fmt"
	"os"
)

func main() {
	// go complains: "use of builtin recover not in function call"
	//defer cleanup_broken()
	
	// this functions correctly
	cleanup()
}

func cleanup_broken() {
	if r := recover; r != nil {
		fmt.Println("encountered an error and had to quit", r)
		os.Exit(1)
	}
}

func cleanup() {
	if r := recover(); r != nil {
		fmt.Println("encountered an error and had to quit", r)
		os.Exit(1)
	}
}

Yep! Since recover is a built-in function, the call to recover will fail with compilation error. Hence we should always invoke the function as recover()

It's been 6 years since I posted this. How did you stumble across it?

Yep! Since recover is a built-in function, the call to recover will fail with compilation error. Hence we should always invoke the function as recover()

It's been 6 years since I posted this. How did you stumble across it?

Actually I was bought here through search result, when I was searching for recover and panic :)

Cool, hope it was helpful!