Closed
Description
For example, having a func returning (int, error), it's quite cumbersome to always explicitly return a zero-valued integer in case of an error:
func demo() (int, error) {
if !someCondition {
return 0, errors.New("someCondition failed")
}
if !someCondition2 {
return 0, errors.New("someCondition2 failed")
}
return 42, nil
}Using named return values instead makes this a bit easier (but they seem overly complicated and error-prone):
func demo() (i int, err error) {
if !someCondition {
err = errors.New("someCondition failed")
return
}
if !someCondition2 {
err = errors.New("someCondition2 failed")
return
}
return 42, nil
}What would be more useful, beautiful, is using an underscore (_) to implicitly return the zero-value of a return parameter — a don't-care value:
func demo() (int, error) {
if !someCondition {
return _, errors.New("someCondition failed")
}
if !someCondition2 {
return _, errors.New("someCondition2 failed")
}
return 42, nil
}Has this been proposed before?