code stringlengths 10 1.34M | language stringclasses 1
value |
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// $G $D/$F.go && $L $F.$A && ./$A.out
// Copyright 2009 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.
// Power series package
// A power series is a channel, along which flow rational
// coefficients. A denominator of zer... | Go |
// $G $D/$F.go && $L $F.$A && ./$A.out
// Copyright 2009 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.
// Verify channel operations that test for blocking
// Use several sizes and types of operands
package main
import "ru... | Go |
// $G $D/$F.go && $L $F.$A && ./$A.out
// Copyright 2009 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.
// This version generates up to 100 and checks the results.
// With a channel, of course.
package main
// Send the seq... | Go |
// $G $D/$F.go && $L $F.$A && ./$A.out
// Copyright 2009 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
var counter uint
var shift uint
func GetValue() uint {
counter++;
return 1 << shift
}
func Send(a, b c... | Go |
// errchk $G -e $D/$F.go
// Copyright 2009 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
var (
cr <-chan int;
cs chan<- int;
c chan int;
)
func main() {
cr = c; // ok
cs = c; // ok
c = cr; // ERROR "... | Go |
// $G $D/$F.go && $L $F.$A && ./$A.out
// Copyright 2009 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.
// Power series package
// A power series is a channel, along which flow rational
// coefficients. A denominator of zer... | Go |
// $G $F.go && $L $F.$A && ./$A.out
// Copyright 2009 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
func assertequal(is, shouldbe int, msg string) {
if is != shouldbe {
print("assertion fail", msg, "\n");
... | Go |
// $G $F.go && $L $F.$A && ./$A.out
// Copyright 2009 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
type T struct { i int; f float; s string; next *T }
type R struct { num int }
func itor(a int) *R {
r := n... | Go |
// $G $D/$F.go && $L $F.$A && ./$A.out
// Copyright 2009 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.
// trivial malloc test
package main
import (
"flag";
"fmt";
"malloc";
)
var chatty = flag.Bool("v", false, "chatty... | Go |
// $G $D/$F.go && $L $F.$A && ./$A.out || echo BUG wrong result
// Copyright 2009 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
func main() {
var x int = 1;
if x != 1 { panic("found ", x, ", expected 1\n"); ... | Go |
// $G $D/$F.go && $L $F.$A && ! ./$A.out
// Copyright 2009 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
func main()
{
var b []int;
var ib interface{} = b;
var m = make(map[interface{}] int);
m[ib] = 1;
}
| Go |
// $G $F.go && $L $F.$A && ./$A.out
// Copyright 2009 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 "os"
const (
Bool = iota;
Int;
Float;
String;
Struct;
Chan;
Array;
Map;
Func;
Last;
)
type... | Go |
// $G $F.go && $L $F.$A && ./$A.out
// Copyright 2009 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
func main() {
print("hello, world\n");
}
| Go |
// $G $D/$F.go && $L $F.$A && ./$A.out
// Copyright 2009 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"
type T int
func (t T) String() string {
return fmt.Sprintf("T%d", t);
}
const (
A T = 1<<... | Go |
// errchk $G $D/$F.go
// Copyright 2009 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
type T struct {a int}
type P *T
type P1 *T
func (p P) val() int { return 1 } // ERROR "receiver"
func (p *P1) val() int {... | Go |
// $G $D/$F.go && $L $F.$A && ./$A.out
// Copyright 2009 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.
// Test that basic operations on named types are valid
// and preserve the type.
package main
type Array [10]byte
typ... | Go |
// $G $F.go && $L $F.$A && ./$A.out
// Copyright 2009 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
var a = []int { 1,2, }
var b = [5]int { 1,2,3 }
var c = []int { 1 }
var d = [...]int { 1,2,3 }
func main() {... | Go |
// errchk $G $D/$F.go
// Copyright 2009 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
var notmain func()
func main() {
var x = &main; // ERROR "address of|invalid"
main = notmain; // ERROR "assign to|inval... | Go |
// errchk $G $F.go
// Copyright 2009 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
type t1 int;
type t2 int;
type t3 int;
func f1(*t2, x t3); // ERROR "named"
func f2(t1, *t2, x t3); // ERROR "named"
func f3(... | Go |
// $G $D/$F.go && $L $F.$A && ./$A.out
// Copyright 2009 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.
// This used to crash because the scheduler
// tried to kick off a new scheduling thread for f
// when time.Nanoseconds ... | Go |
// $G $F.go && $L $F.$A && ./$A.out
// Copyright 2009 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
type T struct {
i int
}
type IN interface {
}
func main() {
var i *int;
var f *float;
var s *string;
v... | Go |
// $G $F.go && $L $F.$A && ./$A.out arg1 arg2
// Copyright 2009 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 "os"
func main() {
if len(os.Args) != 3 {
panic("argc")
}
if os.Args[1] != "arg1" {
... | Go |
package main;
import "fmt";
import "net/http";
func init() {
http.HandleFunc("/", sayHello);
return;
}
func sayHello(w http.ResponseWriter, r *http.Request) {
fmt.Fprint(w, "Hello world!~");
return;
} | Go |
package search_backend
import (
"fmt"
"container/list"
"gob"
"os"
"strings"
"log"
"math"
"io/ioutil"
"crypto/md5"
)
// Estructura que representa a un documento
type Doc struct {
Title string
Url string
Sem float64
Id string
}
const INDEX = "./indx/index"
// Almacenamiento de terminos por documento
var ... | Go |
package main
import (
"fmt"
"flag"
"parser"
"search_backend"
"server"
"log"
"time"
)
// Flags
var workingDirectory *string = flag.String("docs", "./docs", "Localización de los documentos de texto")
var h *bool = flag.Bool("h", false, "Mostrar la ayuda")
var s *bool = flag.Bool("s", false, "Ejecuta el servidor ... | Go |
package parser
import(
"os"
"fmt"
"io/ioutil"
"log"
"regexp"
"strings"
"search_backend"
)
func splitContent (content string, separator string) []string {
words := strings.Split (content, separator)
return words;
}
func inArray (term string, array [] string) bool {
for _, arrayTerm := range (array) {
if (... | Go |
package server
import (
"fmt"
"http"
"old/template"
"strings"
"search_backend"
"time"
"strconv"
"log"
"parser"
"io"
"io/ioutil"
"os"
"regexp"
"sort"
"crypto/md5"
)
// Campos de sustitucion en el template HTML
type alias struct{
WebTitle string
Query string
Description string
Items string
Seconds... | 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
import (
"fmt"
"math"
)
type ErrNegativeSqrt float64
func (e ErrNegativeSqrt) Error() string {
return fmt.Sprintf("Sqrt: n... | 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
import "fmt"
// fibonacci is a function that returns
// a function that returns an int.
func fibonacci() func() int {
f, g :=... | 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
import (
"fmt"
"code.google.com/p/go-tour/tree"
)
func walkImpl(t *tree.Tree, ch chan int) {
if t.Left != nil {
walkImpl... | 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
import (
"strings"
"code.google.com/p/go-tour/wc"
)
func WordCount(s string) map[string]int {
m := make(map[string]int)
f... | 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
import "code.google.com/p/go-tour/pic"
func Pic(dx, dy int) [][]uint8 {
p := make([][]uint8, dy)
for i := range p {
p[i] =... | 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
import (
"io"
"os"
"strings"
)
func rot13(b byte) byte {
var a, z byte
switch {
case 'a' <= b && b <= 'z':
a, z = '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.
// +build ignore
package main
import (
"errors"
"fmt"
"sync"
)
type Fetcher interface {
// Fetch returns the body of URL and
// a slice of URLs found o... | 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
import (
"image"
"image/color"
"code.google.com/p/go-tour/pic"
)
type Image struct {
Height, Width int
}
func (m Image) ... | 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
import (
"fmt"
"math"
)
const delta = 1e-6
func Sqrt(x float64) float64 {
z := x
n := 0.0
for math.Abs(n-z) > delta {
... | Go |
// 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.
// +build ignore
package main
import (
"fmt"
"log"
"net/http"
)
type String string
func (s String) ServeHTTP(w http.ResponseWriter, r *http.Request) {
... | Go |
// +build OMIT
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 |
// +build OMIT
package main
import (
"fmt"
"time"
)
func main() {
tick := time.Tick(100 * time.Millisecond)
boom := time.After(500 * time.Millisecond)
for {
select {
case <-tick:
fmt.Println("tick.")
case <-boom:
fmt.Println("BOOM!")
return
default:
fmt.Println(" .")
time.Sleep(50 * ti... | Go |
// +build OMIT
package main
import "fmt"
func main() {
c := make(chan int, 2)
c <- 1
c <- 2
fmt.Println(<-c)
fmt.Println(<-c)
}
| Go |
// +build OMIT
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)... | Go |
// +build OMIT
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(u... | Go |
// +build OMIT
package main
import (
"fmt"
)
func fibonacci(n int, c chan int) {
x, y := 0, 1
for i := 0; i < n; i++ {
c <- x
x, y = y, x+y
}
close(c)
}
func main() {
c := make(chan int, 10)
go fibonacci(cap(c), c)
for i := range c {
fmt.Println(i)
}
}
| Go |
// +build OMIT
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 |
// +build OMIT
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(... | Go |
// +build OMIT
package main
import "fmt"
func main() {
fmt.Println("Hello, 世界")
}
| Go |
// +build OMIT
package main
import (
"fmt"
"time"
)
func main() {
fmt.Println("Welcome to the playground!")
fmt.Println("The time is", time.Now())
}
| Go |
// +build OMIT
package main
import (
"fmt"
"math"
)
func pow(x, n, lim float64) float64 {
if v := math.Pow(x, n); v < lim {
return v
}
return lim
}
func main() {
fmt.Println(
pow(3, 2, 10),
pow(3, 3, 20),
)
}
| Go |
// +build OMIT
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 |
// +build OMIT
package main
func main() {
for {
}
}
| Go |
// +build OMIT
package main
import "fmt"
func main() {
sum := 1
for ; sum < 1000; {
sum += sum
}
fmt.Println(sum)
}
| Go |
// +build OMIT
package main
import "fmt"
func main() {
sum := 0
for i := 0; i < 10; i++ {
sum += i
}
fmt.Println(sum)
}
| Go |
// +build OMIT
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 ... | Go |
// +build OMIT
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 |
// +build OMIT
package main
import "fmt"
func main() {
sum := 1
for sum < 1000 {
sum += sum
}
fmt.Println(sum)
}
| Go |
// +build OMIT
package main
import (
"fmt"
)
func Sqrt(x float64) float64 {
}
func main() {
fmt.Println(Sqrt(2))
}
| Go |
package main
import "fmt"
func main() {
defer fmt.Println("world")
fmt.Println("hello")
}
| Go |
// +build OMIT
package main
import (
"fmt"
"time"
)
func main() {
t := time.Now()
switch {
case t.Hour() < 12:
fmt.Println("Good morning!")
case t.Hour() < 17:
fmt.Println("Good afternoon.")
default:
fmt.Println("Good evening.")
}
}
| Go |
// +build OMIT
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"
func main() {
fmt.Println("counting")
for i := 0; i < 10; i++ {
defer fmt.Println(i)
}
fmt.Println("done")
}
| Go |
// +build OMIT
package main
import "fmt"
func add(x, y int) int {
return x + y
}
func main() {
fmt.Println(add(42, 13))
}
| Go |
// +build OMIT
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 |
// +build OMIT
package main
import (
"fmt"
"math"
)
func main() {
fmt.Println(math.pi)
}
| Go |
// +build OMIT
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"
func main() {
var i int
var f float64
var b bool
var s string
fmt.Printf("%v %v %v %q\n", i, f, b, s)
}
| Go |
package main
import "fmt"
func main() {
v := 42 // change me!
fmt.Printf("v is of type %T\n", v)
}
| Go |
// +build OMIT
package main
import "fmt"
var i, j int = 1, 2
func main() {
var c, python, java = true, false, "no!"
fmt.Println(i, j, c, python, java)
}
| Go |
// +build OMIT
package main
import "fmt"
func main() {
var i, j int = 1, 2
k := 3
c, python, java := true, false, "no!"
fmt.Println(i, j, k, c, python, java)
}
| Go |
// +build OMIT
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 |
// +build OMIT
package main
import (
"fmt"
"math"
)
func main() {
fmt.Printf("Now you have %g problems.", math.Nextafter(2, 3))
}
| Go |
// +build OMIT
package main
import (
"fmt"
"math/rand"
)
func main() {
fmt.Println("My favorite number is", rand.Intn(10))
}
| Go |
// +build OMIT
package main
import "fmt"
func add(x int, y int) int {
return x + y
}
func main() {
fmt.Println(add(42, 13))
}
| Go |
// +build OMIT
package main
import "fmt"
const Pi = 3.14
func main() {
const World = "世界"
fmt.Println("Hello", World)
fmt.Println("Happy", Pi, "Day")
const Truth = true
fmt.Println("Go rules?", Truth)
}
| Go |
// +build OMIT
package main
import "fmt"
var c, python, java bool
func main() {
var i int
fmt.Println(i, c, python, java)
}
| Go |
// +build OMIT
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 |
// +build OMIT
package main
import (
"fmt"
"math"
)
func main() {
var x, y int = 3, 4
var f float64 = math.Sqrt(float64(x*x + y*y))
var z int = int(f)
fmt.Println(x, y, z)
}
| Go |
// +build OMIT
package main
import (
"fmt"
"math"
)
func main() {
hypot := func(x, y float64) float64 {
return math.Sqrt(x*x + y*y)
}
fmt.Println(hypot(3, 4))
}
| Go |
// +build OMIT
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 |
// +build OMIT
package main
import "fmt"
func main() {
var a [2]string
a[0] = "Hello"
a[1] = "World"
fmt.Println(a[0], a[1])
fmt.Println(a)
}
| Go |
// +build OMIT
package main
import "fmt"
type Vertex struct {
X, Y int
}
var (
v1 = Vertex{1, 2} // has type Vertex
v2 = Vertex{X: 1} // Y:0 is implicit
v3 = Vertex{} // X:0 and Y:0
p = &Vertex{1, 2} // has type *Vertex
)
func main() {
fmt.Println(v1, p, v2, v3)
}
| Go |
// +build OMIT
package main
import "fmt"
type Vertex struct {
X int
Y int
}
func main() {
fmt.Println(Vertex{1, 2})
}
| Go |
// +build OMIT
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 |
// +build OMIT
package main
import "fmt"
var pow = []int{1, 2, 4, 8, 16, 32, 64, 128}
func main() {
for i, v := range pow {
fmt.Printf("2**%d = %d\n", i, v)
}
}
| Go |
// +build OMIT
package main
import "code.google.com/p/go-tour/pic"
func Pic(dx, dy int) [][]uint8 {
}
func main() {
pic.Show(Pic)
}
| Go |
// +build OMIT
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 |
// +build OMIT
package main
import "fmt"
type Vertex struct {
X int
Y int
}
func main() {
v := Vertex{1, 2}
v.X = 4
fmt.Println(v.X)
}
| Go |
// +build OMIT
package main
import "fmt"
func main() {
a := make([]int, 5)
printSlice("a", a)
b := make([]int, 0, 5)
printSlice("b", b)
c := b[:2]
printSlice("c", c)
d := c[2:5]
printSlice("d", d)
}
func printSlice(s string, x []int) {
fmt.Printf("%s len=%d cap=%d %v\n",
s, len(x), cap(x), x)
}
| Go |
// +build OMIT
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 |
// +build OMIT
package main
import "fmt"
func main() {
p := []int{2, 3, 5, 7, 11, 13}
fmt.Println("p ==", p)
for i := 0; i < len(p); i++ {
fmt.Printf("p[%d] == %d\n", i, p[i])
}
}
| Go |
package main
import "fmt"
func main() {
var a []int
printSlice("a", a)
// append works on nil slices.
a = append(a, 0)
printSlice("a", a)
// the slice grows as needed.
a = append(a, 1)
printSlice("a", a)
// we can add more than one element at a time.
a = append(a, 2, 3, 4)
printSlice("a", a)
}
func pri... | Go |
// +build OMIT
package main
import "fmt"
func main() {
i, j := 42, 2701
p := &i // point to i
fmt.Println(*p) // read i through the pointer
*p = 21 // set i through the pointer
fmt.Println(i) // see the new value of i
p = &j // point to j
*p = *p / 37 // divide j through the point... | Go |
// +build OMIT
package main
import "fmt"
func main() {
var z []int
fmt.Println(z, len(z), cap(z))
if z == nil {
fmt.Println("nil!")
}
}
| Go |
// +build OMIT
package main
import "fmt"
type Vertex struct {
X int
Y int
}
func main() {
v := Vertex{1, 2}
p := &v
p.X = 1e9
fmt.Println(v)
}
| Go |
// +build OMIT
package main
import "fmt"
func main() {
m := make(map[string]int)
m["Answer"] = 42
fmt.Println("The value:", m["Answer"])
m["Answer"] = 48
fmt.Println("The value:", m["Answer"])
delete(m, "Answer")
fmt.Println("The value:", m["Answer"])
v, ok := m["Answer"]
fmt.Println("The value:", v, "P... | Go |
// +build OMIT
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 |
// +build OMIT
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 |
// +build OMIT
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 |
// +build OMIT
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 |
// +build OMIT
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 |
// +build OMIT
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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