An example of handling errors using a task list

work-example-two.go

package main

import (
    "errors"
    "fmt"
)

// Task represents a callable task to be executed
type Task func()

// Work slice of consecutive tasks that each may or 
// may not have a single point of failure
type Work []Task

// Do the work
func (w Work) Do(err *error) {
    for _, t := range w {
        t()
        if *err != nil {
            return
        }
    }
    return
}

func main() {
    var err error
    
    work := Work{
        // task A
        func() {
            fmt.Println("A")
        },
        // task B
        func() {
            fmt.Println("B")
        },
        // task C
        func() {
            fmt.Println("C")
            err = errors.New("I don't know why, but Fail!")
        },
        // task D
        func() {
            fmt.Println("D")
        },
    }

    work.Do(&err)

    if err != nil {
        fmt.Println(err.Error())
    }
}

// http://play.golang.org/p/RgJ5PipuG0