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https://github.com/golang/go
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ca3c6985cd
Add a new dynamicType node, which is used as a case entry when the type being switched to is generic. Change-Id: Ice77c6f224b8fdd3ff574fdf4a8ea5f6c7ddbe75 Reviewed-on: https://go-review.googlesource.com/c/go/+/339429 Trust: Keith Randall <khr@golang.org> Trust: Dan Scales <danscales@google.com> Run-TryBot: Keith Randall <khr@golang.org> Reviewed-by: Dan Scales <danscales@google.com>
32 lines
665 B
Go
32 lines
665 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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import "reflect"
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func f[T any](i interface{}) {
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switch x := i.(type) {
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case T:
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println("T", x)
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case int:
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println("int", x)
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case int32, int16:
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println("int32/int16", reflect.ValueOf(x).Int())
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case struct { a, b T }:
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println("struct{T,T}", x.a, x.b)
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default:
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println("other", reflect.ValueOf(x).Int())
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}
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}
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func main() {
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f[float64](float64(6))
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f[float64](int(7))
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f[float64](int32(8))
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f[float64](struct{a, b float64}{a:1, b:2})
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f[float64](int8(9))
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}
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