mirror of https://github.com/golang/go.git
40 lines
732 B
Plaintext
40 lines
732 B
Plaintext
// run
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// Copyright 2020 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 main
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import "fmt"
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type Value(type T) struct {
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val T
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}
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func (v *Value(T)) Get() T {
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return v.val
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}
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func (v *Value(T)) Set(val T) {
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v.val = val
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}
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func main() {
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var v1 Value(int)
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v1.Set(1)
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if got, want := v1.Get(), 1; got != want {
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panic(fmt.Sprintf("Get() == %d, want %d", got, want))
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}
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v1.Set(2)
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if got, want := v1.Get(), 2; got != want {
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panic(fmt.Sprintf("Get() == %d, want %d", got, want))
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}
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var v2 Value(string)
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v2.Set("a")
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if got, want := v2.Get(), "a"; got != want {
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panic(fmt.Sprintf("Get() == %q, want %q", got, want))
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}
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}
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