github.com/graybobo/golang.org-package-offline-cache@v0.0.0-20200626051047-6608995c132f/x/tools/oracle/testdata/src/main/whicherrs.go (about)

     1  package main
     2  
     3  type errType string
     4  
     5  const constErr errType = "blah"
     6  
     7  func (et errType) Error() string {
     8  	return string(et)
     9  }
    10  
    11  var errVar error = errType("foo")
    12  
    13  func genErr(i int) error {
    14  	switch i {
    15  	case 0:
    16  		return constErr
    17  	case 1:
    18  		return errVar
    19  	default:
    20  		return nil
    21  	}
    22  }
    23  
    24  func main() {
    25  	err := genErr(0) // @whicherrs localerrs "err"
    26  	_ = err
    27  }