70 lines
1 KiB
Go
70 lines
1 KiB
Go
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// Copyright 2014 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package interfaces
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type I interface {
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Rand() int32
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}
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type SameI interface {
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Rand() int32
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}
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type LargerI interface {
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Rand() int32
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AnotherFunc()
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}
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func Add3(r I) int32 {
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return r.Rand() + r.Rand() + r.Rand()
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}
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// chosen by fair dice roll.
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// guaranteed to be random.
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type seven struct{}
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func (seven) Rand() int32 { return 7 }
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func Seven() I { return seven{} }
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type WithParam interface {
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HasParam(p bool)
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}
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type Error interface {
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Err() error
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}
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func CallErr(e Error) error {
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return e.Err()
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}
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// not implementable
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type I1 interface {
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J()
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H() *seven // not bound
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}
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// not implementable
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type I2 interface {
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f()
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G()
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}
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// implementable
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// (the implementor has to find a source of I1s)
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type I3 interface {
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F() I1
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}
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// not bound
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func F() seven { return seven{} }
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func G(u seven) {}
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// Interfaces is an interface with the same name as its package.
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type Interfaces interface {
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SomeMethod()
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}
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