// Copyright 2012 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 sync_test

import (
	"fmt"
	"os"
	"sync"
)

type httpPkg struct{}

func (httpPkg) Get(url string) {}

var http httpPkg

// This example fetches several URLs concurrently,
// using a WaitGroup to block until all the fetches are complete.

// Copyright 2012 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 exec_test

import (
	"context"
	"encoding/json"
	"fmt"
	"io"
	"log"
	"os"
	"os/exec"
	"strings"
	"time"
)

func ExampleLookPath() {
	path, err := exec.LookPath("fortune")
	if err != nil {
		log.Fatal("installing fortune is in your future")
	}

// Copyright 2012 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 strings_test

import (
	"fmt"
	"strings"
	"unicode"
	"unsafe"
)

func ExampleClone() {
	s := "abc"
	clone := strings.Clone(s)
	fmt.Println(s == clone)
	fmt.Println(unsafe.StringData(s) == unsafe.StringData(clone))
	// Output:
	// true
	// false
}

	// 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"

// Copyright 2012 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 rand_test

import (
	"fmt"
	"math/rand"
	"os"
	"strings"
	"text/tabwriter"
)

// These tests serve as an example but also make sure we don't change
// the output of the random number generator when given a fixed seed.

func Example() {
	answers := []string{

// Copyright 2014 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 tls_test

import (
	"crypto/tls"
	"crypto/x509"
	"log"
	"net/http"
	"net/http/httptest"
	"os"
	"time"
)

// zeroSource is an io.Reader that returns an unlimited number of zero bytes.
type zeroSource struct{}

// Copyright 2012 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 scanner_test

import (
	"fmt"
	"go/scanner"
	"go/token"
)

func ExampleScanner_Scan() {
	// src is the input that we want to tokenize.
	src := []byte("cos(x) + 1i*sin(x) // Euler")

	// Initialize the scanner.
	var s scanner.Scanner

// Copyright 2012 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 printer_test

import (
	"bytes"
	"fmt"
	"go/ast"
	"go/parser"
	"go/printer"
	"go/token"
	"strings"
)

func parseFunc(filename, functionname string) (fun *ast.FuncDecl, fset *token.FileSet) {
	fset = token.NewFileSet()

// Copyright 2015 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 io_test

import (
	"fmt"
	"io"
	"log"
	"os"
	"strings"
)

func ExampleCopy() {
	r := strings.NewReader("some io.Reader stream to be read\n")

	if _, err := io.Copy(os.Stdout, r); err != nil {
		log.Fatal(err)
	}

	// Output:

// Copyright 2013 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 regexp_test

import (
	"fmt"
	"regexp"
	"strings"
)

func Example() {
	// Compile the expression once, usually at init time.
	// Use raw strings to avoid having to quote the backslashes.
	var validID = regexp.MustCompile(`^[a-z]+\[[0-9]+\]$`)