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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:23:18 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:23:18 +0000 |
commit | 43a123c1ae6613b3efeed291fa552ecd909d3acf (patch) | |
tree | fd92518b7024bc74031f78a1cf9e454b65e73665 /test/typeparam/subdict.go | |
parent | Initial commit. (diff) | |
download | golang-1.20-upstream.tar.xz golang-1.20-upstream.zip |
Adding upstream version 1.20.14.upstream/1.20.14upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'test/typeparam/subdict.go')
-rw-r--r-- | test/typeparam/subdict.go | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/test/typeparam/subdict.go b/test/typeparam/subdict.go new file mode 100644 index 0000000..463c510 --- /dev/null +++ b/test/typeparam/subdict.go @@ -0,0 +1,43 @@ +// run + +// Copyright 2021 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Test cases where a main dictionary is needed inside a generic function/method, because +// we are calling a method on a fully-instantiated type or a fully-instantiated function. +// (probably not common situations, of course) + +package main + +import ( + "fmt" +) + +type C comparable + +type value[T C] struct { + val T +} + +func (v *value[T]) test(def T) bool { + return (v.val == def) +} + +func (v *value[T]) get(def T) T { + var c value[int] + if c.test(32) { + return def + } else if v.test(def) { + return def + } else { + return v.val + } +} + +func main() { + var s value[string] + if got, want := s.get("ab"), ""; got != want { + panic(fmt.Sprintf("get() == %d, want %d", got, want)) + } +} |