code stringlengths 10 1.34M | language stringclasses 1
value |
|---|---|
// 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.
// +build darwin freebsd netbsd openbsd
package ipv4
import (
"net"
"os"
"syscall"
)
func ipv4MulticastTTL(fd int) (int, error) {
v, err := syscall.Gets... | Go |
// 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.
// +build darwin freebsd linux netbsd openbsd
package ipv4
import (
"net"
"reflect"
)
func (c *genericOpt) sysfd() (int, error) {
switch p := c.Conn.(typ... | Go |
// 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.
// +build dragonfly plan9 solaris
package ipv4
func ipv4HeaderPrepend(fd int) (bool, error) {
// TODO(mikio): Implement this
return false, errOpNoSupport
}... | Go |
// 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.
// +build dragonfly plan9 solaris
package ipv4
func (c *genericOpt) TOS() (int, error) {
// TODO(mikio): Implement this
return 0, errOpNoSupport
}
func (c... | Go |
// 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.
// +build darwin freebsd netbsd openbsd
package ipv4
import (
"net"
"os"
"syscall"
"unsafe"
)
func setControlMessage(fd int, opt *rawOpt, cf ControlFlag... | Go |
// 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 ipv4
import (
"net"
"reflect"
"syscall"
)
func (c *genericOpt) sysfd() (syscall.Handle, error) {
switch p := c.Conn.(type) {
case *net.TCPConn, ... | Go |
// 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 ipv4
import (
"net"
"syscall"
)
// A payloadHandler represents the IPv4 datagram payload handler.
type payloadHandler struct {
net.PacketConn
raw... | Go |
// 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 ipv4
import (
"net"
"syscall"
)
// A packetHandler represents the IPv4 datagram handler.
type packetHandler struct {
c *net.IPConn
rawOpt
}
func... | Go |
// 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 ipv4
import (
"os"
"syscall"
)
func ipv4SendSourceAddress(fd int) (bool, error) {
v, err := syscall.GetsockoptInt(fd, ianaProtocolIP, syscall.IP_S... | Go |
// 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 ipv4
import "syscall"
func setControlMessage(fd syscall.Handle, opt *rawOpt, cf ControlFlags, on bool) error {
// TODO(mikio): Implement this
retur... | Go |
// 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 ipv4 implements IP-level socket options for the Internet
// Protocol version 4.
//
// The package provides IP-level socket options that allow
// man... | Go |
// 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.
// +build darwin freebsd linux netbsd openbsd windows
package ipv4
import (
"syscall"
)
// TOS returns the type-of-service field value for outgoing packets... | Go |
// 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 ipv4
// An ICMPType represents a type of ICMP message.
type ICMPType int
func (typ ICMPType) String() string {
s, ok := icmpTypes[typ]
if !ok {
r... | Go |
// 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 ipv4
import (
"net"
"os"
"syscall"
"unsafe"
)
// Please refer to the online manual;
// http://msdn.microsoft.com/en-us/library/windows/desktop/ms... | Go |
// 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.
// +build ignore
// This program generates internet protocol constants by reading IANA
// protocol registries.
//
// Usage:
// go run gentest.go > iana_test.g... | Go |
// 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 proxy
import (
"errors"
"io"
"net"
"strconv"
)
// SOCKS5 returns a Dialer that makes SOCKSv5 connections to the given address
// with an optional ... | Go |
// 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 proxy provides support for a variety of protocols to proxy network
// data.
package proxy
import (
"errors"
"net"
"net/url"
"os"
)
// A Dialer ... | Go |
// 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 proxy
import (
"net"
)
type direct struct{}
// Direct is a direct proxy: one that makes network connections directly.
var Direct = direct{}
func (d... | Go |
// 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 proxy
import (
"net"
"strings"
)
// A PerHost directs connections to a default Dialer unless the hostname
// requested matches one of a number of ex... | Go |
// 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.
// +build ignore
package main
// This program generates table.go and table_test.go.
// Invoke as:
//
// go run gen.go -version "xxx" >table.go
// go run... | Go |
// 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 publicsuffix provides a public suffix list based on data from
// http://publicsuffix.org/. A public suffix is one under which Internet users
// can d... | Go |
// 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 netutil provides network utility functions, complementing the more
// common ones in the net package.
package netutil
import (
"net"
"sync"
)
//... | Go |
// 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 html
import (
"code.google.com/p/go.net/html/atom"
)
// A NodeType is the type of a Node.
type NodeType uint32
const (
ErrorNode NodeType = iota
T... | Go |
// 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 html
import (
"strings"
)
func adjustAttributeNames(aa []Attribute, nameMap map[string]string) {
for i := range aa {
if newName, ok := nameMap[aa[... | Go |
// 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 html
import (
"bufio"
"errors"
"fmt"
"io"
"strings"
)
type writer interface {
io.Writer
WriteByte(c byte) error // in Go 1.1, use io.ByteWriter... | Go |
// 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 html
// Section 12.2.3.2 of the HTML5 specification says "The following elements
// have varying levels of special parsing rules".
// http://www.whatwg... | Go |
// Package charset provides common text encodings for HTML documents.
//
// The mapping from encoding labels to encodings is defined at
// http://encoding.spec.whatwg.org.
package charset
import (
"bytes"
"io"
"mime"
"strings"
"unicode/utf8"
"code.google.com/p/go.net/html"
"code.google.com/p/go.text/encoding"
... | Go |
// +build ignore
package main
// Download http://encoding.spec.whatwg.org/encodings.json and use it to
// generate table.go.
import (
"encoding/json"
"fmt"
"log"
"net/http"
"strings"
)
type enc struct {
Name string
Labels []string
}
type group struct {
Encodings []enc
Heading string
}
const specURL =... | Go |
// Copyright 2010 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 html
import (
"bytes"
"errors"
"io"
"strconv"
"strings"
"code.google.com/p/go.net/html/atom"
)
// A TokenType is the type of a Token.
type Toke... | Go |
// 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 html
import (
"strings"
)
// parseDoctype parses the data from a DoctypeToken into a name,
// public identifier, and system identifier. It returns a ... | Go |
// Copyright 2010 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 html
import (
"bytes"
"strings"
"unicode/utf8"
)
// These replacements permit compatibility with old numeric entities that
// assumed Windows-1252 ... | Go |
// Copyright 2010 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 html
import (
"errors"
"fmt"
"io"
"strings"
a "code.google.com/p/go.net/html/atom"
)
// A parser implements the HTML5 parsing algorithm:
// http... | Go |
// Copyright 2010 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 html
// All entities that do not end with ';' are 6 or fewer bytes long.
const longestEntityWithoutSemicolon = 6
// entity is a map from HTML entity n... | Go |
// Copyright 2010 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 html implements an HTML5-compliant tokenizer and parser.
Tokenization is done by creating a Tokenizer for an io.Reader r. It is the
caller's respons... | Go |
// 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 atom provides integer codes (also known as atoms) for a fixed set of
// frequently occurring HTML strings: tag names and attribute keys such as "p"
/... | Go |
// 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.
// +build ignore
package main
// This program generates table.go and table_test.go.
// Invoke as
//
// go run gen.go |gofmt >table.go
// go run gen.go -test |... | Go |
// 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 main
import (
"fmt"
"math"
)
const delta = 1e-10
func Sqrt(x float64) float64 {
z := x
for {
n := z - (z*z-x)/(2*z)
if math.Abs(n-z) < delta... | Go |
// 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 main
import "fmt"
// fibonacci is a function that returns
// a function that returns an int.
func fibonacci() func() int {
f, g := 0, 1
return func... | Go |
// 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 main
import (
"strings"
"tour/wc"
)
func WordCount(s string) map[string]int {
m := make(map[string]int)
for _, f := range strings.Fields(s) {
m... | Go |
// 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 main
import (
"fmt"
"math/cmplx"
)
const delta = 1e-10
func Cbrt(x complex128) complex128 {
z := x
for {
n := z - (z*z*z-x)/(3*z*z)
if cmplx... | Go |
// 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 main
import (
"errors"
"fmt"
"sync"
)
type Fetcher interface {
// Fetch returns the body of URL and
// a slice of URLs found on that page.
Fetc... | Go |
// 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 main
import (
"fmt"
"tour/tree"
)
func walkImpl(t *tree.Tree, ch chan int) {
if t.Left != nil {
walkImpl(t.Left, ch)
}
ch <- t.Value
if t.Rig... | Go |
// 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 main
import "tour/pic"
func Pic(dx, dy int) [][]uint8 {
p := make([][]uint8, dy)
for i := range p {
p[i] = make([]uint8, dx)
}
for y, row := r... | Go |
// 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 main
import (
"io"
"os"
"strings"
)
func rot13(b byte) byte {
var a, z byte
switch {
case 'a' <= b && b <= 'z':
a, z = 'a', 'z'
case 'A' <= ... | Go |
// 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 main
import (
"image"
"image/color"
"tour/pic"
)
type Image struct {
Height, Width int
}
func (m Image) ColorModel() color.Model {
return color... | Go |
// 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 main
import (
"fmt"
"math"
)
type ErrNegativeSqrt float64
func (e ErrNegativeSqrt) Error() string {
return fmt.Sprintf("Sqrt: negative number %g"... | Go |
// 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 pic
import (
"bytes"
"encoding/base64"
"fmt"
"image"
"image/png"
)
func Show(f func(int, int) [][]uint8) {
const (
dx = 256
dy = 256
)
da... | Go |
// 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 wc
import "fmt"
// Test runs a test suite against f.
func Test(f func(string) map[string]int) {
ok := true
for _, c := range testCases {
got := f... | Go |
// 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 tree
import (
"fmt"
"math/rand"
)
// A Tree is a binary tree with integer values.
type Tree struct {
Left *Tree
Value int
Right *Tree
}
// New... | Go |
// 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.
// +build appengine
package main
import (
"bufio"
"bytes"
"fmt"
"io"
"net/http"
"appengine"
"appengine/urlfetch"
)
const runUrl = "http://golang.org... | Go |
// 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 main
import (
"html/template"
"io"
"os"
"path/filepath"
"code.google.com/p/go.talks/pkg/present"
)
func init() {
present.PlayEnabled = true
}
... | Go |
// 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.
// +build !appengine
package main
import (
"bytes"
"encoding/json"
"flag"
"fmt"
"go/build"
"io"
"io/ioutil"
"log"
"net"
"net/http"
"os"
"os/exec"... | Go |
// 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 main
import (
"bytes"
"encoding/json"
"go/ast"
"go/parser"
"go/printer"
"go/token"
"net/http"
)
func init() {
http.HandleFunc("/fmt", fmtHand... | Go |
package main
import (
"fmt"
"math"
)
func pow(x, n, lim float64) float64 {
if v := math.Pow(x, n); v < lim {
return v
} else {
fmt.Printf("%g >= %g\n", v, lim)
}
// can't use v here, though
return lim
}
func main() {
fmt.Println(
pow(3, 2, 10),
pow(3, 3, 20),
)
}
| Go |
package main
import (
"fmt"
"time"
)
func main() {
tick := time.Tick(1e8)
boom := time.After(5e8)
for {
select {
case <-tick:
fmt.Println("tick.")
case <-boom:
fmt.Println("BOOM!")
return
default:
fmt.Println(" .")
time.Sleep(5e7)
}
}
}
| Go |
package main
import (
"fmt"
)
func Sqrt(f float64) (float64, error) {
return 0, nil
}
func main() {
fmt.Println(Sqrt(2))
fmt.Println(Sqrt(-2))
}
| Go |
package main
import "fmt"
func main() {
fmt.Println("Hello, 世界")
}
| Go |
package main
import (
"fmt"
"net/http"
)
type Hello struct{}
func (h Hello) ServeHTTP(
w http.ResponseWriter,
r *http.Request) {
fmt.Fprint(w, "Hello!")
}
func main() {
var h Hello
http.ListenAndServe("localhost:4000", h)
}
| Go |
package main
import (
"fmt"
"runtime"
)
func main() {
fmt.Print("Go runs on ")
switch os := runtime.GOOS; os {
case "darwin":
fmt.Println("OS X.")
case "linux":
fmt.Println("Linux.")
default:
// freebsd, openbsd,
// plan9, windows...
fmt.Printf("%s.", os)
}
}
| Go |
package main
import (
"fmt"
"math"
)
func main() {
fmt.Printf("Now you have %g problems.",
math.Nextafter(2, 3))
}
| Go |
package main
import "fmt"
func swap(x, y string) (string, string) {
return y, x
}
func main() {
a, b := swap("hello", "world")
fmt.Println(a, b)
}
| Go |
package main
import (
"fmt"
"math/cmplx"
)
var (
ToBe bool = false
MaxInt uint64 = 1<<64 - 1
z complex128 = cmplx.Sqrt(-5 + 12i)
)
func main() {
const f = "%T(%v)\n"
fmt.Printf(f, ToBe, ToBe)
fmt.Printf(f, MaxInt, MaxInt)
fmt.Printf(f, z, z)
}
| Go |
package main
import "code.google.com/p/go-tour/tree"
// Walk walks the tree t sending all values
// from the tree to the channel ch.
func Walk(t *tree.Tree, ch chan int)
// Same determines whether the trees
// t1 and t2 contain the same values.
func Same(t1, t2 *tree.Tree) bool
func main() {
}
| Go |
package main
import "fmt"
func main() {
var x, y, z int = 1, 2, 3
c, python, java := true, false, "no!"
fmt.Println(x, y, z, c, python, java)
}
| Go |
package main
import "fmt"
type Vertex struct {
Lat, Long float64
}
var m = map[string]Vertex{
"Bell Labs": Vertex{
40.68433, -74.39967,
},
"Google": Vertex{
37.42202, -122.08408,
},
}
func main() {
fmt.Println(m)
}
| Go |
package main
import "fmt"
func fibonacci(c, quit chan int) {
x, y := 0, 1
for {
select {
case c <- x:
x, y = y, x+y
case <-quit:
fmt.Println("quit")
return
}
}
}
func main() {
c := make(chan int)
quit := make(chan int)
go func() {
for i := 0; i < 10; i++ {
fmt.Println(<-c)
}
quit <- 0... | Go |
package main
import (
"fmt"
)
func Sqrt(x float64) float64 {
}
func main() {
fmt.Println(Sqrt(2))
}
| Go |
package main
import "fmt"
var x, y, z int
var c, python, java bool
func main() {
fmt.Println(x, y, z, c, python, java)
}
| Go |
package main
import "fmt"
func adder() func(int) int {
sum := 0
return func(x int) int {
sum += x
return sum
}
}
func main() {
pos, neg := adder(), adder()
for i := 0; i < 10; i++ {
fmt.Println(
pos(i),
neg(-2*i),
)
}
}
| Go |
package main
import "fmt"
func main() {
var z []int
fmt.Println(z, len(z), cap(z))
if z == nil {
fmt.Println("nil!")
}
}
| Go |
package main
import "fmt"
const (
Big = 1 << 100
Small = Big >> 99
)
func needInt(x int) int { return x*10 + 1 }
func needFloat(x float64) float64 {
return x * 0.1
}
func main() {
fmt.Println(needInt(Small))
fmt.Println(needFloat(Small))
fmt.Println(needFloat(Big))
}
| Go |
package main
import (
"fmt"
)
type Fetcher interface {
// Fetch returns the body of URL and
// a slice of URLs found on that page.
Fetch(url string) (body string, urls []string, err error)
}
// Crawl uses fetcher to recursively crawl
// pages starting with url, to a maximum of depth.
func Crawl(url string, depth... | Go |
package main
import "fmt"
func add(x, y int) int {
return x + y
}
func main() {
fmt.Println(add(42, 13))
}
| Go |
package main
import (
"fmt"
"math"
)
type Vertex struct {
X, Y float64
}
func (v *Vertex) Abs() float64 {
return math.Sqrt(v.X*v.X + v.Y*v.Y)
}
func main() {
v := &Vertex{3, 4}
fmt.Println(v.Abs())
}
| Go |
package main
import (
"code.google.com/p/go-tour/wc"
)
func WordCount(s string) map[string]int {
return map[string]int{"x": 1}
}
func main() {
wc.Test(WordCount)
}
| Go |
package main
func main() {
for {
}
}
| Go |
package main
import (
"fmt"
"math"
)
type Abser interface {
Abs() float64
}
func main() {
var a Abser
f := MyFloat(-math.Sqrt2)
v := Vertex{3, 4}
a = f // a MyFloat implements Abser
a = &v // a *Vertex implements Abser
a = v // a Vertex, does NOT
// implement Abser
fmt.Println(a.Abs())
}
type MyFloat... | Go |
package main
import "fmt"
type Vertex struct {
Lat, Long float64
}
var m map[string]Vertex
func main() {
m = make(map[string]Vertex)
m["Bell Labs"] = Vertex{
40.68433, -74.39967,
}
fmt.Println(m["Bell Labs"])
}
| Go |
package main
import (
"fmt"
"os"
)
type Reader interface {
Read(b []byte) (n int, err error)
}
type Writer interface {
Write(b []byte) (n int, err error)
}
type ReadWriter interface {
Reader
Writer
}
func main() {
var w Writer
// os.Stdout implements Writer
w = os.Stdout
fmt.Fprintf(w, "hello, writer\n... | Go |
package main
import "fmt"
func main() {
pow := make([]int, 10)
for i := range pow {
pow[i] = 1 << uint(i)
}
for _, value := range pow {
fmt.Printf("%d\n", value)
}
}
| Go |
package main
import (
"fmt"
"time"
)
func main() {
fmt.Println("When's Saturday?")
today := time.Now().Weekday()
switch time.Saturday {
case today + 0:
fmt.Println("Today.")
case today + 1:
fmt.Println("Tomorrow.")
case today + 2:
fmt.Println("In two days.")
default:
fmt.Println("Too far away.")
}
}... | Go |
package main
import (
"fmt"
"math"
)
func main() {
fmt.Println(math.pi)
}
| Go |
package main
import "fmt"
type Vertex struct {
X, Y int
}
var (
p = Vertex{1, 2} // has type Vertex
q = &Vertex{1, 2} // has type *Vertex
r = Vertex{X: 1} // Y:0 is implicit
s = Vertex{} // X:0 and Y:0
)
func main() {
fmt.Println(p, q, r, s)
}
| Go |
package main
import "fmt"
type Vertex struct {
X int
Y int
}
func main() {
p := Vertex{1, 2}
q := &p
q.X = 1e9
fmt.Println(p)
}
| Go |
package main
import "fmt"
func main() {
sum := 0
for i := 0; i < 10; i++ {
sum += i
}
fmt.Println(sum)
}
| Go |
package main
import "fmt"
func main() {
p := []int{2, 3, 5, 7, 11, 13}
fmt.Println("p ==", p)
fmt.Println("p[1:4] ==", p[1:4])
// missing low index implies 0
fmt.Println("p[:3] ==", p[:3])
// missing high index implies len(s)
fmt.Println("p[4:] ==", p[4:])
}
| Go |
package main
import "fmt"
func split(sum int) (x, y int) {
x = sum * 4 / 9
y = sum - x
return
}
func main() {
fmt.Println(split(17))
}
| Go |
package main
import "fmt"
func Cbrt(x complex128) complex128 {
}
func main() {
fmt.Println(Cbrt(2))
}
| Go |
package main
import (
"fmt"
"math"
)
type MyFloat float64
func (f MyFloat) Abs() float64 {
if f < 0 {
return float64(-f)
}
return float64(f)
}
func main() {
f := MyFloat(-math.Sqrt2)
fmt.Println(f.Abs())
}
| Go |
package main
import (
"fmt"
"math"
)
func main() {
fmt.Println("Happy", math.Pi, "Day")
}
| Go |
package main
import "fmt"
var x, y, z int = 1, 2, 3
var c, python, java = true, false, "no!"
func main() {
fmt.Println(x, y, z, c, python, java)
}
| Go |
package main
import (
"fmt"
"math"
)
type Vertex struct {
X, Y float64
}
func (v *Vertex) Scale(f float64) {
v.X = v.X * f
v.Y = v.Y * f
}
func (v *Vertex) Abs() float64 {
return math.Sqrt(v.X*v.X + v.Y*v.Y)
}
func main() {
v := &Vertex{3, 4}
v.Scale(5)
fmt.Println(v, v.Abs())
}
| Go |
package main
import (
"fmt"
"math"
)
func sqrt(x float64) string {
if x < 0 {
return sqrt(-x) + "i"
}
return fmt.Sprint(math.Sqrt(x))
}
func main() {
fmt.Println(sqrt(2), sqrt(-4))
}
| Go |
package main
import "fmt"
func sum(a []int, c chan int) {
sum := 0
for _, v := range a {
sum += v
}
c <- sum // send sum to c
}
func main() {
a := []int{7, 2, 8, -9, 4, 0}
c := make(chan int)
go sum(a[:len(a)/2], c)
go sum(a[len(a)/2:], c)
x, y := <-c, <-c // receive from c
fmt.Println(x, y, x+y)
}
| Go |
package main
import "fmt"
func main() {
sum := 1
for sum < 1000 {
sum += sum
}
fmt.Println(sum)
}
| Go |
package main
import (
"fmt"
"time"
)
func say(s string) {
for i := 0; i < 5; i++ {
time.Sleep(100 * time.Millisecond)
fmt.Println(s)
}
}
func main() {
go say("world")
say("hello")
}
| Go |
package main
import "fmt"
type Vertex struct {
Lat, Long float64
}
var m = map[string]Vertex{
"Bell Labs": {40.68433, -74.39967},
"Google": {37.42202, -122.08408},
}
func main() {
fmt.Println(m)
}
| Go |
package main
import "fmt"
// fibonacci is a function that returns
// a function that returns an int.
func fibonacci() func() int {
}
func main() {
f := fibonacci()
for i := 0; i < 10; i++ {
fmt.Println(f())
}
}
| Go |
package main
import "fmt"
type Vertex struct {
X int
Y int
}
func main() {
fmt.Println(Vertex{1, 2})
}
| Go |
package main
import (
"io"
"os"
"strings"
)
type rot13Reader struct {
r io.Reader
}
func main() {
s := strings.NewReader(
"Lbh penpxrq gur pbqr!")
r := rot13Reader{s}
io.Copy(os.Stdout, &r)
}
| Go |
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