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https://github.com/golang/go
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8854368cb0
Deal correctly with a blank local variable with type param type. This is a special case, because a blank local variable is not in the fn.Dcl list. In this case, we must explicitly create a new blank node with the correct substituted type, so we have correct types if the blank local variable has an initializing assignment. Fixes #48602 Change-Id: I903ea44b29934e180404e32800773b7309bf297b Reviewed-on: https://go-review.googlesource.com/c/go/+/352117 Run-TryBot: Dan Scales <danscales@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com> Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com> Trust: Dan Scales <danscales@google.com>
26 lines
428 B
Go
26 lines
428 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 Iterator[T any] interface {
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Iterate(fn T)
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}
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type IteratorFunc[T any] func(fn T)
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func (f IteratorFunc[T]) Iterate(fn T) {
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f(fn)
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}
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func Foo[R any]() {
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var _ Iterator[R] = IteratorFunc[R](nil)
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}
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func main() {
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Foo[int]()
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}
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