Adding upstream version 1.20.14.upstream/1.20.14upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 725 insertions, 0 deletions

diff --git a/src/time/example_test.go b/src/time/example_test.go
new file mode 100644
index 0000000..059c631
--- /dev/null
+++ b/src/time/example_test.go
@@ -0,0 +1,725 @@
+// Copyright 2011 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.
+
+package time_test
+
+import (
+	"fmt"
+	"time"
+)
+
+func expensiveCall() {}
+
+func ExampleDuration() {
+	t0 := time.Now()
+	expensiveCall()
+	t1 := time.Now()
+	fmt.Printf("The call took %v to run.\n", t1.Sub(t0))
+}
+
+func ExampleDuration_Round() {
+	d, err := time.ParseDuration("1h15m30.918273645s")
+	if err != nil {
+		panic(err)
+	}
+
+	round := []time.Duration{
+		time.Nanosecond,
+		time.Microsecond,
+		time.Millisecond,
+		time.Second,
+		2 * time.Second,
+		time.Minute,
+		10 * time.Minute,
+		time.Hour,
+	}
+
+	for _, r := range round {
+		fmt.Printf("d.Round(%6s) = %s\n", r, d.Round(r).String())
+	}
+	// Output:
+	// d.Round(   1ns) = 1h15m30.918273645s
+	// d.Round(   1µs) = 1h15m30.918274s
+	// d.Round(   1ms) = 1h15m30.918s
+	// d.Round(    1s) = 1h15m31s
+	// d.Round(    2s) = 1h15m30s
+	// d.Round(  1m0s) = 1h16m0s
+	// d.Round( 10m0s) = 1h20m0s
+	// d.Round(1h0m0s) = 1h0m0s
+}
+
+func ExampleDuration_String() {
+	fmt.Println(1*time.Hour + 2*time.Minute + 300*time.Millisecond)
+	fmt.Println(300 * time.Millisecond)
+	// Output:
+	// 1h2m0.3s
+	// 300ms
+}
+
+func ExampleDuration_Truncate() {
+	d, err := time.ParseDuration("1h15m30.918273645s")
+	if err != nil {
+		panic(err)
+	}
+
+	trunc := []time.Duration{
+		time.Nanosecond,
+		time.Microsecond,
+		time.Millisecond,
+		time.Second,
+		2 * time.Second,
+		time.Minute,
+		10 * time.Minute,
+		time.Hour,
+	}
+
+	for _, t := range trunc {
+		fmt.Printf("d.Truncate(%6s) = %s\n", t, d.Truncate(t).String())
+	}
+	// Output:
+	// d.Truncate(   1ns) = 1h15m30.918273645s
+	// d.Truncate(   1µs) = 1h15m30.918273s
+	// d.Truncate(   1ms) = 1h15m30.918s
+	// d.Truncate(    1s) = 1h15m30s
+	// d.Truncate(    2s) = 1h15m30s
+	// d.Truncate(  1m0s) = 1h15m0s
+	// d.Truncate( 10m0s) = 1h10m0s
+	// d.Truncate(1h0m0s) = 1h0m0s
+}
+
+func ExampleParseDuration() {
+	hours, _ := time.ParseDuration("10h")
+	complex, _ := time.ParseDuration("1h10m10s")
+	micro, _ := time.ParseDuration("1µs")
+	// The package also accepts the incorrect but common prefix u for micro.
+	micro2, _ := time.ParseDuration("1us")
+
+	fmt.Println(hours)
+	fmt.Println(complex)
+	fmt.Printf("There are %.0f seconds in %v.\n", complex.Seconds(), complex)
+	fmt.Printf("There are %d nanoseconds in %v.\n", micro.Nanoseconds(), micro)
+	fmt.Printf("There are %6.2e seconds in %v.\n", micro2.Seconds(), micro)
+	// Output:
+	// 10h0m0s
+	// 1h10m10s
+	// There are 4210 seconds in 1h10m10s.
+	// There are 1000 nanoseconds in 1µs.
+	// There are 1.00e-06 seconds in 1µs.
+}
+
+func ExampleDuration_Hours() {
+	h, _ := time.ParseDuration("4h30m")
+	fmt.Printf("I've got %.1f hours of work left.", h.Hours())
+	// Output: I've got 4.5 hours of work left.
+}
+
+func ExampleDuration_Microseconds() {
+	u, _ := time.ParseDuration("1s")
+	fmt.Printf("One second is %d microseconds.\n", u.Microseconds())
+	// Output:
+	// One second is 1000000 microseconds.
+}
+
+func ExampleDuration_Milliseconds() {
+	u, _ := time.ParseDuration("1s")
+	fmt.Printf("One second is %d milliseconds.\n", u.Milliseconds())
+	// Output:
+	// One second is 1000 milliseconds.
+}
+
+func ExampleDuration_Minutes() {
+	m, _ := time.ParseDuration("1h30m")
+	fmt.Printf("The movie is %.0f minutes long.", m.Minutes())
+	// Output: The movie is 90 minutes long.
+}
+
+func ExampleDuration_Nanoseconds() {
+	u, _ := time.ParseDuration("1µs")
+	fmt.Printf("One microsecond is %d nanoseconds.\n", u.Nanoseconds())
+	// Output:
+	// One microsecond is 1000 nanoseconds.
+}
+
+func ExampleDuration_Seconds() {
+	m, _ := time.ParseDuration("1m30s")
+	fmt.Printf("Take off in t-%.0f seconds.", m.Seconds())
+	// Output: Take off in t-90 seconds.
+}
+
+var c chan int
+
+func handle(int) {}
+
+func ExampleAfter() {
+	select {
+	case m := <-c:
+		handle(m)
+	case <-time.After(10 * time.Second):
+		fmt.Println("timed out")
+	}
+}
+
+func ExampleSleep() {
+	time.Sleep(100 * time.Millisecond)
+}
+
+func statusUpdate() string { return "" }
+
+func ExampleTick() {
+	c := time.Tick(5 * time.Second)
+	for next := range c {
+		fmt.Printf("%v %s\n", next, statusUpdate())
+	}
+}
+
+func ExampleMonth() {
+	_, month, day := time.Now().Date()
+	if month == time.November && day == 10 {
+		fmt.Println("Happy Go day!")
+	}
+}
+
+func ExampleDate() {
+	t := time.Date(2009, time.November, 10, 23, 0, 0, 0, time.UTC)
+	fmt.Printf("Go launched at %s\n", t.Local())
+	// Output: Go launched at 2009-11-10 15:00:00 -0800 PST
+}
+
+func ExampleNewTicker() {
+	ticker := time.NewTicker(time.Second)
+	defer ticker.Stop()
+	done := make(chan bool)
+	go func() {
+		time.Sleep(10 * time.Second)
+		done <- true
+	}()
+	for {
+		select {
+		case <-done:
+			fmt.Println("Done!")
+			return
+		case t := <-ticker.C:
+			fmt.Println("Current time: ", t)
+		}
+	}
+}
+
+func ExampleTime_Format() {
+	// Parse a time value from a string in the standard Unix format.
+	t, err := time.Parse(time.UnixDate, "Wed Feb 25 11:06:39 PST 2015")
+	if err != nil { // Always check errors even if they should not happen.
+		panic(err)
+	}
+
+	tz, err := time.LoadLocation("Asia/Shanghai")
+	if err != nil { // Always check errors even if they should not happen.
+		panic(err)
+	}
+
+	// time.Time's Stringer method is useful without any format.
+	fmt.Println("default format:", t)
+
+	// Predefined constants in the package implement common layouts.
+	fmt.Println("Unix format:", t.Format(time.UnixDate))
+
+	// The time zone attached to the time value affects its output.
+	fmt.Println("Same, in UTC:", t.UTC().Format(time.UnixDate))
+
+	fmt.Println("in Shanghai with seconds:", t.In(tz).Format("2006-01-02T15:04:05 -070000"))
+
+	fmt.Println("in Shanghai with colon seconds:", t.In(tz).Format("2006-01-02T15:04:05 -07:00:00"))
+
+	// The rest of this function demonstrates the properties of the
+	// layout string used in the format.
+
+	// The layout string used by the Parse function and Format method
+	// shows by example how the reference time should be represented.
+	// We stress that one must show how the reference time is formatted,
+	// not a time of the user's choosing. Thus each layout string is a
+	// representation of the time stamp,
+	//	Jan 2 15:04:05 2006 MST
+	// An easy way to remember this value is that it holds, when presented
+	// in this order, the values (lined up with the elements above):
+	//	  1 2  3  4  5    6  -7
+	// There are some wrinkles illustrated below.
+
+	// Most uses of Format and Parse use constant layout strings such as
+	// the ones defined in this package, but the interface is flexible,
+	// as these examples show.
+
+	// Define a helper function to make the examples' output look nice.
+	do := func(name, layout, want string) {
+		got := t.Format(layout)
+		if want != got {
+			fmt.Printf("error: for %q got %q; expected %q\n", layout, got, want)
+			return
+		}
+		fmt.Printf("%-16s %q gives %q\n", name, layout, got)
+	}
+
+	// Print a header in our output.
+	fmt.Printf("\nFormats:\n\n")
+
+	// Simple starter examples.
+	do("Basic full date", "Mon Jan 2 15:04:05 MST 2006", "Wed Feb 25 11:06:39 PST 2015")
+	do("Basic short date", "2006/01/02", "2015/02/25")
+
+	// The hour of the reference time is 15, or 3PM. The layout can express
+	// it either way, and since our value is the morning we should see it as
+	// an AM time. We show both in one format string. Lower case too.
+	do("AM/PM", "3PM==3pm==15h", "11AM==11am==11h")
+
+	// When parsing, if the seconds value is followed by a decimal point
+	// and some digits, that is taken as a fraction of a second even if
+	// the layout string does not represent the fractional second.
+	// Here we add a fractional second to our time value used above.
+	t, err = time.Parse(time.UnixDate, "Wed Feb 25 11:06:39.1234 PST 2015")
+	if err != nil {
+		panic(err)
+	}
+	// It does not appear in the output if the layout string does not contain
+	// a representation of the fractional second.
+	do("No fraction", time.UnixDate, "Wed Feb 25 11:06:39 PST 2015")
+
+	// Fractional seconds can be printed by adding a run of 0s or 9s after
+	// a decimal point in the seconds value in the layout string.
+	// If the layout digits are 0s, the fractional second is of the specified
+	// width. Note that the output has a trailing zero.
+	do("0s for fraction", "15:04:05.00000", "11:06:39.12340")
+
+	// If the fraction in the layout is 9s, trailing zeros are dropped.
+	do("9s for fraction", "15:04:05.99999999", "11:06:39.1234")
+
+	// Output:
+	// default format: 2015-02-25 11:06:39 -0800 PST
+	// Unix format: Wed Feb 25 11:06:39 PST 2015
+	// Same, in UTC: Wed Feb 25 19:06:39 UTC 2015
+	//in Shanghai with seconds: 2015-02-26T03:06:39 +080000
+	//in Shanghai with colon seconds: 2015-02-26T03:06:39 +08:00:00
+	//
+	// Formats:
+	//
+	// Basic full date  "Mon Jan 2 15:04:05 MST 2006" gives "Wed Feb 25 11:06:39 PST 2015"
+	// Basic short date "2006/01/02" gives "2015/02/25"
+	// AM/PM            "3PM==3pm==15h" gives "11AM==11am==11h"
+	// No fraction      "Mon Jan _2 15:04:05 MST 2006" gives "Wed Feb 25 11:06:39 PST 2015"
+	// 0s for fraction  "15:04:05.00000" gives "11:06:39.12340"
+	// 9s for fraction  "15:04:05.99999999" gives "11:06:39.1234"
+
+}
+
+func ExampleTime_Format_pad() {
+	// Parse a time value from a string in the standard Unix format.
+	t, err := time.Parse(time.UnixDate, "Sat Mar 7 11:06:39 PST 2015")
+	if err != nil { // Always check errors even if they should not happen.
+		panic(err)
+	}
+
+	// Define a helper function to make the examples' output look nice.
+	do := func(name, layout, want string) {
+		got := t.Format(layout)
+		if want != got {
+			fmt.Printf("error: for %q got %q; expected %q\n", layout, got, want)
+			return
+		}
+		fmt.Printf("%-16s %q gives %q\n", name, layout, got)
+	}
+
+	// The predefined constant Unix uses an underscore to pad the day.
+	do("Unix", time.UnixDate, "Sat Mar  7 11:06:39 PST 2015")
+
+	// For fixed-width printing of values, such as the date, that may be one or
+	// two characters (7 vs. 07), use an _ instead of a space in the layout string.
+	// Here we print just the day, which is 2 in our layout string and 7 in our
+	// value.
+	do("No pad", "<2>", "<7>")
+
+	// An underscore represents a space pad, if the date only has one digit.
+	do("Spaces", "<_2>", "< 7>")
+
+	// A "0" indicates zero padding for single-digit values.
+	do("Zeros", "<02>", "<07>")
+
+	// If the value is already the right width, padding is not used.
+	// For instance, the second (05 in the reference time) in our value is 39,
+	// so it doesn't need padding, but the minutes (04, 06) does.
+	do("Suppressed pad", "04:05", "06:39")
+
+	// Output:
+	// Unix             "Mon Jan _2 15:04:05 MST 2006" gives "Sat Mar  7 11:06:39 PST 2015"
+	// No pad           "<2>" gives "<7>"
+	// Spaces           "<_2>" gives "< 7>"
+	// Zeros            "<02>" gives "<07>"
+	// Suppressed pad   "04:05" gives "06:39"
+
+}
+
+func ExampleTime_GoString() {
+	t := time.Date(2009, time.November, 10, 23, 0, 0, 0, time.UTC)
+	fmt.Println(t.GoString())
+	t = t.Add(1 * time.Minute)
+	fmt.Println(t.GoString())
+	t = t.AddDate(0, 1, 0)
+	fmt.Println(t.GoString())
+	t, _ = time.Parse("Jan 2, 2006 at 3:04pm (MST)", "Feb 3, 2013 at 7:54pm (UTC)")
+	fmt.Println(t.GoString())
+
+	// Output:
+	// time.Date(2009, time.November, 10, 23, 0, 0, 0, time.UTC)
+	// time.Date(2009, time.November, 10, 23, 1, 0, 0, time.UTC)
+	// time.Date(2009, time.December, 10, 23, 1, 0, 0, time.UTC)
+	// time.Date(2013, time.February, 3, 19, 54, 0, 0, time.UTC)
+}
+
+func ExampleParse() {
+	// See the example for Time.Format for a thorough description of how
+	// to define the layout string to parse a time.Time value; Parse and
+	// Format use the same model to describe their input and output.
+
+	// longForm shows by example how the reference time would be represented in
+	// the desired layout.
+	const longForm = "Jan 2, 2006 at 3:04pm (MST)"
+	t, _ := time.Parse(longForm, "Feb 3, 2013 at 7:54pm (PST)")
+	fmt.Println(t)
+
+	// shortForm is another way the reference time would be represented
+	// in the desired layout; it has no time zone present.
+	// Note: without explicit zone, returns time in UTC.
+	const shortForm = "2006-Jan-02"
+	t, _ = time.Parse(shortForm, "2013-Feb-03")
+	fmt.Println(t)
+
+	// Some valid layouts are invalid time values, due to format specifiers
+	// such as _ for space padding and Z for zone information.
+	// For example the RFC3339 layout 2006-01-02T15:04:05Z07:00
+	// contains both Z and a time zone offset in order to handle both valid options:
+	// 2006-01-02T15:04:05Z
+	// 2006-01-02T15:04:05+07:00
+	t, _ = time.Parse(time.RFC3339, "2006-01-02T15:04:05Z")
+	fmt.Println(t)
+	t, _ = time.Parse(time.RFC3339, "2006-01-02T15:04:05+07:00")
+	fmt.Println(t)
+	_, err := time.Parse(time.RFC3339, time.RFC3339)
+	fmt.Println("error", err) // Returns an error as the layout is not a valid time value
+
+	// Output:
+	// 2013-02-03 19:54:00 -0800 PST
+	// 2013-02-03 00:00:00 +0000 UTC
+	// 2006-01-02 15:04:05 +0000 UTC
+	// 2006-01-02 15:04:05 +0700 +0700
+	// error parsing time "2006-01-02T15:04:05Z07:00": extra text: "07:00"
+}
+
+func ExampleParseInLocation() {
+	loc, _ := time.LoadLocation("Europe/Berlin")
+
+	// This will look for the name CEST in the Europe/Berlin time zone.
+	const longForm = "Jan 2, 2006 at 3:04pm (MST)"
+	t, _ := time.ParseInLocation(longForm, "Jul 9, 2012 at 5:02am (CEST)", loc)
+	fmt.Println(t)
+
+	// Note: without explicit zone, returns time in given location.
+	const shortForm = "2006-Jan-02"
+	t, _ = time.ParseInLocation(shortForm, "2012-Jul-09", loc)
+	fmt.Println(t)
+
+	// Output:
+	// 2012-07-09 05:02:00 +0200 CEST
+	// 2012-07-09 00:00:00 +0200 CEST
+}
+
+func ExampleUnix() {
+	unixTime := time.Date(2009, time.November, 10, 23, 0, 0, 0, time.UTC)
+	fmt.Println(unixTime.Unix())
+	t := time.Unix(unixTime.Unix(), 0).UTC()
+	fmt.Println(t)
+
+	// Output:
+	// 1257894000
+	// 2009-11-10 23:00:00 +0000 UTC
+}
+
+func ExampleUnixMicro() {
+	umt := time.Date(2009, time.November, 10, 23, 0, 0, 0, time.UTC)
+	fmt.Println(umt.UnixMicro())
+	t := time.UnixMicro(umt.UnixMicro()).UTC()
+	fmt.Println(t)
+
+	// Output:
+	// 1257894000000000
+	// 2009-11-10 23:00:00 +0000 UTC
+}
+
+func ExampleUnixMilli() {
+	umt := time.Date(2009, time.November, 10, 23, 0, 0, 0, time.UTC)
+	fmt.Println(umt.UnixMilli())
+	t := time.UnixMilli(umt.UnixMilli()).UTC()
+	fmt.Println(t)
+
+	// Output:
+	// 1257894000000
+	// 2009-11-10 23:00:00 +0000 UTC
+}
+
+func ExampleTime_Unix() {
+	// 1 billion seconds of Unix, three ways.
+	fmt.Println(time.Unix(1e9, 0).UTC())     // 1e9 seconds
+	fmt.Println(time.Unix(0, 1e18).UTC())    // 1e18 nanoseconds
+	fmt.Println(time.Unix(2e9, -1e18).UTC()) // 2e9 seconds - 1e18 nanoseconds
+
+	t := time.Date(2001, time.September, 9, 1, 46, 40, 0, time.UTC)
+	fmt.Println(t.Unix())     // seconds since 1970
+	fmt.Println(t.UnixNano()) // nanoseconds since 1970
+
+	// Output:
+	// 2001-09-09 01:46:40 +0000 UTC
+	// 2001-09-09 01:46:40 +0000 UTC
+	// 2001-09-09 01:46:40 +0000 UTC
+	// 1000000000
+	// 1000000000000000000
+}
+
+func ExampleTime_Round() {
+	t := time.Date(0, 0, 0, 12, 15, 30, 918273645, time.UTC)
+	round := []time.Duration{
+		time.Nanosecond,
+		time.Microsecond,
+		time.Millisecond,
+		time.Second,
+		2 * time.Second,
+		time.Minute,
+		10 * time.Minute,
+		time.Hour,
+	}
+
+	for _, d := range round {
+		fmt.Printf("t.Round(%6s) = %s\n", d, t.Round(d).Format("15:04:05.999999999"))
+	}
+	// Output:
+	// t.Round(   1ns) = 12:15:30.918273645
+	// t.Round(   1µs) = 12:15:30.918274
+	// t.Round(   1ms) = 12:15:30.918
+	// t.Round(    1s) = 12:15:31
+	// t.Round(    2s) = 12:15:30
+	// t.Round(  1m0s) = 12:16:00
+	// t.Round( 10m0s) = 12:20:00
+	// t.Round(1h0m0s) = 12:00:00
+}
+
+func ExampleTime_Truncate() {
+	t, _ := time.Parse("2006 Jan 02 15:04:05", "2012 Dec 07 12:15:30.918273645")
+	trunc := []time.Duration{
+		time.Nanosecond,
+		time.Microsecond,
+		time.Millisecond,
+		time.Second,
+		2 * time.Second,
+		time.Minute,
+		10 * time.Minute,
+	}
+
+	for _, d := range trunc {
+		fmt.Printf("t.Truncate(%5s) = %s\n", d, t.Truncate(d).Format("15:04:05.999999999"))
+	}
+	// To round to the last midnight in the local timezone, create a new Date.
+	midnight := time.Date(t.Year(), t.Month(), t.Day(), 0, 0, 0, 0, time.Local)
+	_ = midnight
+
+	// Output:
+	// t.Truncate(  1ns) = 12:15:30.918273645
+	// t.Truncate(  1µs) = 12:15:30.918273
+	// t.Truncate(  1ms) = 12:15:30.918
+	// t.Truncate(   1s) = 12:15:30
+	// t.Truncate(   2s) = 12:15:30
+	// t.Truncate( 1m0s) = 12:15:00
+	// t.Truncate(10m0s) = 12:10:00
+}
+
+func ExampleLoadLocation() {
+	location, err := time.LoadLocation("America/Los_Angeles")
+	if err != nil {
+		panic(err)
+	}
+
+	timeInUTC := time.Date(2018, 8, 30, 12, 0, 0, 0, time.UTC)
+	fmt.Println(timeInUTC.In(location))
+	// Output: 2018-08-30 05:00:00 -0700 PDT
+}
+
+func ExampleLocation() {
+	// China doesn't have daylight saving. It uses a fixed 8 hour offset from UTC.
+	secondsEastOfUTC := int((8 * time.Hour).Seconds())
+	beijing := time.FixedZone("Beijing Time", secondsEastOfUTC)
+
+	// If the system has a timezone database present, it's possible to load a location
+	// from that, e.g.:
+	//    newYork, err := time.LoadLocation("America/New_York")
+
+	// Creating a time requires a location. Common locations are time.Local and time.UTC.
+	timeInUTC := time.Date(2009, 1, 1, 12, 0, 0, 0, time.UTC)
+	sameTimeInBeijing := time.Date(2009, 1, 1, 20, 0, 0, 0, beijing)
+
+	// Although the UTC clock time is 1200 and the Beijing clock time is 2000, Beijing is
+	// 8 hours ahead so the two dates actually represent the same instant.
+	timesAreEqual := timeInUTC.Equal(sameTimeInBeijing)
+	fmt.Println(timesAreEqual)
+
+	// Output:
+	// true
+}
+
+func ExampleTime_Add() {
+	start := time.Date(2009, 1, 1, 12, 0, 0, 0, time.UTC)
+	afterTenSeconds := start.Add(time.Second * 10)
+	afterTenMinutes := start.Add(time.Minute * 10)
+	afterTenHours := start.Add(time.Hour * 10)
+	afterTenDays := start.Add(time.Hour * 24 * 10)
+
+	fmt.Printf("start = %v\n", start)
+	fmt.Printf("start.Add(time.Second * 10) = %v\n", afterTenSeconds)
+	fmt.Printf("start.Add(time.Minute * 10) = %v\n", afterTenMinutes)
+	fmt.Printf("start.Add(time.Hour * 10) = %v\n", afterTenHours)
+	fmt.Printf("start.Add(time.Hour * 24 * 10) = %v\n", afterTenDays)
+
+	// Output:
+	// start = 2009-01-01 12:00:00 +0000 UTC
+	// start.Add(time.Second * 10) = 2009-01-01 12:00:10 +0000 UTC
+	// start.Add(time.Minute * 10) = 2009-01-01 12:10:00 +0000 UTC
+	// start.Add(time.Hour * 10) = 2009-01-01 22:00:00 +0000 UTC
+	// start.Add(time.Hour * 24 * 10) = 2009-01-11 12:00:00 +0000 UTC
+}
+
+func ExampleTime_AddDate() {
+	start := time.Date(2009, 1, 1, 0, 0, 0, 0, time.UTC)
+	oneDayLater := start.AddDate(0, 0, 1)
+	oneMonthLater := start.AddDate(0, 1, 0)
+	oneYearLater := start.AddDate(1, 0, 0)
+
+	fmt.Printf("oneDayLater: start.AddDate(0, 0, 1) = %v\n", oneDayLater)
+	fmt.Printf("oneMonthLater: start.AddDate(0, 1, 0) = %v\n", oneMonthLater)
+	fmt.Printf("oneYearLater: start.AddDate(1, 0, 0) = %v\n", oneYearLater)
+
+	// Output:
+	// oneDayLater: start.AddDate(0, 0, 1) = 2009-01-02 00:00:00 +0000 UTC
+	// oneMonthLater: start.AddDate(0, 1, 0) = 2009-02-01 00:00:00 +0000 UTC
+	// oneYearLater: start.AddDate(1, 0, 0) = 2010-01-01 00:00:00 +0000 UTC
+}
+
+func ExampleTime_After() {
+	year2000 := time.Date(2000, 1, 1, 0, 0, 0, 0, time.UTC)
+	year3000 := time.Date(3000, 1, 1, 0, 0, 0, 0, time.UTC)
+
+	isYear3000AfterYear2000 := year3000.After(year2000) // True
+	isYear2000AfterYear3000 := year2000.After(year3000) // False
+
+	fmt.Printf("year3000.After(year2000) = %v\n", isYear3000AfterYear2000)
+	fmt.Printf("year2000.After(year3000) = %v\n", isYear2000AfterYear3000)
+
+	// Output:
+	// year3000.After(year2000) = true
+	// year2000.After(year3000) = false
+}
+
+func ExampleTime_Before() {
+	year2000 := time.Date(2000, 1, 1, 0, 0, 0, 0, time.UTC)
+	year3000 := time.Date(3000, 1, 1, 0, 0, 0, 0, time.UTC)
+
+	isYear2000BeforeYear3000 := year2000.Before(year3000) // True
+	isYear3000BeforeYear2000 := year3000.Before(year2000) // False
+
+	fmt.Printf("year2000.Before(year3000) = %v\n", isYear2000BeforeYear3000)
+	fmt.Printf("year3000.Before(year2000) = %v\n", isYear3000BeforeYear2000)
+
+	// Output:
+	// year2000.Before(year3000) = true
+	// year3000.Before(year2000) = false
+}
+
+func ExampleTime_Date() {
+	d := time.Date(2000, 2, 1, 12, 30, 0, 0, time.UTC)
+	year, month, day := d.Date()
+
+	fmt.Printf("year = %v\n", year)
+	fmt.Printf("month = %v\n", month)
+	fmt.Printf("day = %v\n", day)
+
+	// Output:
+	// year = 2000
+	// month = February
+	// day = 1
+}
+
+func ExampleTime_Day() {
+	d := time.Date(2000, 2, 1, 12, 30, 0, 0, time.UTC)
+	day := d.Day()
+
+	fmt.Printf("day = %v\n", day)
+
+	// Output:
+	// day = 1
+}
+
+func ExampleTime_Equal() {
+	secondsEastOfUTC := int((8 * time.Hour).Seconds())
+	beijing := time.FixedZone("Beijing Time", secondsEastOfUTC)
+
+	// Unlike the equal operator, Equal is aware that d1 and d2 are the
+	// same instant but in different time zones.
+	d1 := time.Date(2000, 2, 1, 12, 30, 0, 0, time.UTC)
+	d2 := time.Date(2000, 2, 1, 20, 30, 0, 0, beijing)
+
+	datesEqualUsingEqualOperator := d1 == d2
+	datesEqualUsingFunction := d1.Equal(d2)
+
+	fmt.Printf("datesEqualUsingEqualOperator = %v\n", datesEqualUsingEqualOperator)
+	fmt.Printf("datesEqualUsingFunction = %v\n", datesEqualUsingFunction)
+
+	// Output:
+	// datesEqualUsingEqualOperator = false
+	// datesEqualUsingFunction = true
+}
+
+func ExampleTime_String() {
+	timeWithNanoseconds := time.Date(2000, 2, 1, 12, 13, 14, 15, time.UTC)
+	withNanoseconds := timeWithNanoseconds.String()
+
+	timeWithoutNanoseconds := time.Date(2000, 2, 1, 12, 13, 14, 0, time.UTC)
+	withoutNanoseconds := timeWithoutNanoseconds.String()
+
+	fmt.Printf("withNanoseconds = %v\n", string(withNanoseconds))
+	fmt.Printf("withoutNanoseconds = %v\n", string(withoutNanoseconds))
+
+	// Output:
+	// withNanoseconds = 2000-02-01 12:13:14.000000015 +0000 UTC
+	// withoutNanoseconds = 2000-02-01 12:13:14 +0000 UTC
+}
+
+func ExampleTime_Sub() {
+	start := time.Date(2000, 1, 1, 0, 0, 0, 0, time.UTC)
+	end := time.Date(2000, 1, 1, 12, 0, 0, 0, time.UTC)
+
+	difference := end.Sub(start)
+	fmt.Printf("difference = %v\n", difference)
+
+	// Output:
+	// difference = 12h0m0s
+}
+
+func ExampleTime_AppendFormat() {
+	t := time.Date(2017, time.November, 4, 11, 0, 0, 0, time.UTC)
+	text := []byte("Time: ")
+
+	text = t.AppendFormat(text, time.Kitchen)
+	fmt.Println(string(text))
+
+	// Output:
+	// Time: 11:00AM
+}
+
+func ExampleFixedZone() {
+	loc := time.FixedZone("UTC-8", -8*60*60)
+	t := time.Date(2009, time.November, 10, 23, 0, 0, 0, loc)
+	fmt.Println("The time is:", t.Format(time.RFC822))
+	// Output: The time is: 10 Nov 09 23:00 UTC-8
+}