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https://github.com/golang/go
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c1c303f6f8
Augmented some of the typeswitch*.go tests so that some instantiations have duplicate cases, in order to ensure we're testing that. Spacing changes in the tests are due to gofmt. Change-Id: I5d3678813505c520c544281d4ac8a62ce7e236ad Reviewed-on: https://go-review.googlesource.com/c/go/+/370155 Trust: Dan Scales <danscales@google.com> Run-TryBot: Dan Scales <danscales@google.com> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org>
41 lines
737 B
Go
41 lines
737 B
Go
// run -gcflags=-G=3
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// Copyright 2021 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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type I interface{ foo() int }
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type myint int
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func (x myint) foo() int { return int(x) }
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type myfloat float64
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func (x myfloat) foo() int { return int(x) }
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type myint32 int32
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func (x myint32) foo() int { return int(x) }
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func f[T I](i I) {
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switch x := i.(type) {
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case T:
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println("T", x.foo())
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case myint:
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println("myint", x.foo())
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default:
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println("other", x.foo())
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}
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}
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func main() {
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f[myfloat](myint(6))
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f[myfloat](myfloat(7))
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f[myfloat](myint32(8))
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f[myint32](myint32(8))
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f[myint32](myfloat(7))
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f[myint](myint32(9))
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}
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