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// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package structs
type S struct {
X, Y float64
unexported bool
}
func (s *S) Sum() float64 {
return s.X + s.Y
}
func (s *S) Identity() (*S, error) {
return s, nil
}
func Identity(s *S) *S {
return s
}
func IdentityWithError(s *S) (*S, error) {
return s, nil
}