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55891d73cf
Hopefully this gives users a better understanding of the MarshalAppend entrypoint and what it can be used for, as well as the typical Size usage. Change-Id: I26c9705c3d1dbfea5f30820d41ccabbb88fbb772 Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/573361 Reviewed-by: Lasse Folger <lassefolger@google.com> Auto-Submit: Michael Stapelberg <stapelberg@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Cassondra Foesch <cfoesch@gmail.com> Reviewed-by: Damien Neil <dneil@google.com>
19 lines
512 B
Go
19 lines
512 B
Go
// Copyright 2024 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 proto_test
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import (
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"google.golang.org/protobuf/proto"
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)
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// Checking if [Size] returns 0 is an easy way to recognize empty messages:
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func ExampleSize() {
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var m proto.Message
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if proto.Size(m) == 0 {
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// No fields set (or, in proto3, all fields matching the default);
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// skip processing this message, or return an error, or similar.
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}
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}
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