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strconv: add example for QuotedPrefix

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Example can sometimes be more informative than additional prose.

Fixes #46829

Change-Id: Ia5a5b121ad0b891026e77420d5f7f1b2c4a407da
Reviewed-on: https://go-review.googlesource.com/c/go/+/336749
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
Reviewed-by: qiulaidongfeng <2645477756@qq.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
This commit is contained in:
Joe Tsai 2021-07-22 15:41:53 -07:00 committed by Joseph Tsai
parent 74f47206cf
commit 34f2365d88
1 changed files with 17 additions and 0 deletions
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17
src/strconv/example_test.go
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@ -369,6 +369,23 @@ func ExampleQuoteToGraphic() {
// "\" This is a ☺ \\n \""
}
func ExampleQuotedPrefix() {
s, err := strconv.QuotedPrefix("not a quoted string")
fmt.Printf("%q, %v\n", s, err)
s, err = strconv.QuotedPrefix("\"double-quoted string\" with trailing text")
fmt.Printf("%q, %v\n", s, err)
s, err = strconv.QuotedPrefix("`or backquoted` with more trailing text")
fmt.Printf("%q, %v\n", s, err)
s, err = strconv.QuotedPrefix("'\u263a' is also okay")
fmt.Printf("%q, %v\n", s, err)
// Output:
// "", invalid syntax
// "\"double-quoted string\"", <nil>
// "`or backquoted`", <nil>
// "'☺'", <nil>
}
func ExampleUnquote() {
s, err := strconv.Unquote("You can't unquote a string without quotes")
fmt.Printf("%q, %v\n", s, err)