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c74be77e63
Similarly to what we do for the built-in function `copy`, where we allow a string as 2nd argument to append, also permit a type parameter constrained by string|[]byte. While at it, change date in the manual.go2 test files so that we don't need to constantly correct it when copying a test case from that file into a proper test file. Fixes #50281. Change-Id: I23fed66736aa07bb3c481fe97313e828425ac448 Reviewed-on: https://go-review.googlesource.com/c/go/+/376214 Trust: Robert Griesemer <gri@golang.org> Reviewed-by: Robert Findley <rfindley@google.com>
21 lines
415 B
Go
21 lines
415 B
Go
// run -gcflags=-G=3
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// Copyright 2022 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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func add[S ~string | ~[]byte](buf *[]byte, s S) {
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*buf = append(*buf, s...)
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}
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func main() {
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var buf []byte
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add(&buf, "foo")
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add(&buf, []byte("bar"))
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if string(buf) != "foobar" {
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panic("got " + string(buf))
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}
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}
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