sadness.go

package models

type concurrent struct {
	fns []func() (interface{}, error)
}

func (this *concurrent) addFn(fn func() (interface{}, error)) *concurrent {
	this.fns = append(this.fns, fn)
	return this
}

func (this *concurrent) run() []resultAndError {
	var result []resultAndError
	ch := make(chan resultAndError)
	for _, fn := range this.fns {
		delegate := fn
		go func() {
			res, err := delegate()
			ch <- resultAndError{result:res, err:err}
		}()
	}
	for _ = range this.fns {
		result = append(result, <-ch)
	}
	return result
}

To answer your question: Yes, you should. 😘