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encoding/json: document that nil slice encodes as `null` 

Fixes #3189.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/5730058
This commit is contained in:
Russ Cox 2012-03-05 13:29:22 -05:00
parent 8e5b34e580
commit 8dbd9d746d
1 changed files with 2 additions and 1 deletions
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3
src/pkg/encoding/json/encode.go
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@ -43,7 +43,8 @@ import (
// to keep some browsers from misinterpreting JSON output as HTML.
//
// Array and slice values encode as JSON arrays, except that
// []byte encodes as a base64-encoded string.
// []byte encodes as a base64-encoded string, and a nil slice
// encodes as the null JSON object.
//
// Struct values encode as JSON objects. Each exported struct field
// becomes a member of the object unless