package go/scanner
PrintError is a utility function that prints a list of errors to w(1st parameter), one error per line, if the err parameter is an ErrorList. Otherwise it prints the err(2nd parameter) string.
Golang go/scanner.PrintError() function usage examples
Example 1:
if p, err := processFile(filename); err != nil {
log.Printf("\t%s\n\n", filename)
scanner.PrintError(os.Stderr, err) // <-- here
exitCode = 1
}
Example 2:
if len(list) != 9 {
t.Errorf("found %d sorted errors, expected 9", len(list))
PrintError(os.Stderr, list)
}
Reference :
http://golang.org/pkg/go/scanner/#PrintError
