func Contents(filters ...Filter) ([]string, error) {
	var result []string
	err := ForEach(Sequence(filters...), func(s string) {
		result = append(result, s)
	})
	if err != nil {
		result = nil // Discard results on error
	}
	return result, err
}
func Contents(filters ...Filter) ([]string, error) {
	var result []string
	err := ForEach(Sequence(filters...), func(s string) {
		result = append(result, s)
	})
	if err != nil {
		result = nil 
	}
	return result, err
}
func Contents ( filters ... Filter ) ( [ ] string , error ) { var result [ ] string err := ForEach ( Sequence ( filters ... ) , func ( s string ) { result = append ( result , s ) } ) if err != nil { result = nil // Discard results on error } return result , err }
// Contents returns a slice that contains all items that are
// the output of filters.
Contents returns a slice that contains all items that are the output of filters .