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Current Path: /opt/golang/1.17.2/test/interface

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📁 ..
📄 assertinline.go(1.77 KB)
📄 bigdata.go(1.45 KB)
📄 convert.go(1.88 KB)
📄 convert1.go(393 B)
📄 convert2.go(393 B)
📄 embed.go(924 B)
📁 embed1.dir
📄 embed1.go(250 B)
📄 embed2.go(1.48 KB)
📁 embed3.dir
📄 embed3.go(187 B)
📄 explicit.go(1.98 KB)
📄 fail.go(544 B)
📄 fake.go(1.75 KB)
📄 noeq.go(641 B)
📄 pointer.go(774 B)
📁 private.dir
📄 private.go(285 B)
📄 receiver.go(1.26 KB)
📄 receiver1.go(790 B)
📄 recursive.go(374 B)
📁 recursive1.dir
📄 recursive1.go(267 B)
📄 returntype.go(670 B)
📄 struct.go(2.43 KB)

Editing: receiver.go

// run

// Copyright 2009 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.

// Test Implicit methods for embedded types and
// mixed pointer and non-pointer receivers.

package main

type T int

var nv, np int

func (t T) V() {
	if t != 42 {
		panic(t)
	}
	nv++
}

func (t *T) P() {
	if *t != 42 {
		println(t, *t)
		panic("fail")
	}
	np++
}

type V interface {
	V()
}
type P interface {
	P()
	V()
}

type S struct {
	T
}

type SP struct {
	*T
}

func main() {
	var t T
	var v V
	var p P

t = 42

t.P()
	t.V()

v = t
	v.V()

p = &t
	p.P()
	p.V()

v = &t
	v.V()

//	p = t	// ERROR
	var i interface{} = t
	if _, ok := i.(P); ok {
		println("dynamic i.(P) succeeded incorrectly")
		panic("fail")
	}

//	println("--struct--");
	var s S
	s.T = 42
	s.P()
	s.V()

v = s
	s.V()

p = &s
	p.P()
	p.V()

v = &s
	v.V()

//	p = s	// ERROR
	var j interface{} = s
	if _, ok := j.(P); ok {
		println("dynamic j.(P) succeeded incorrectly")
		panic("fail")
	}

//	println("--struct pointer--");
	var sp SP
	sp.T = &t
	sp.P()
	sp.V()

v = sp
	sp.V()

p = &sp
	p.P()
	p.V()

v = &sp
	v.V()

p = sp // not error
	p.P()
	p.V()

if nv != 13 || np != 7 {
		println("bad count", nv, np)
		panic("fail")
	}
}

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Editing: receiver.go

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