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// A basic package to decode Wave files. package audio import ( "rog-go.googlecode.com/hg/exp/abc" "os" "fmt" "io" "encoding/binary" "reflect" "strings" ) func init() { Register("readwav", wInput, map[string]abc.Socket { "out": abc.Socket{SamplesT, abc.Male}, "1": abc.Socket{abc.StringT, abc.Female}, ...
Go
/* Go program to decode an audio stream of Morse code into a stream of ASCII. See the ALGORITHM file for a description of what's going on, and 'proof.hs' as the original proof-of-concept implementation of this algorithm in Haskell. */ package main import ( "fmt" "math" "rand" "sort" ) type token int ...
Go
// Go support for Protocol Buffers - Google's data interchange format // // Copyright 2010 The Go Authors. All rights reserved. // http://code.google.com/p/goprotobuf/ // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // m...
Go
// Go support for Protocol Buffers - Google's data interchange format // // Copyright 2010 The Go Authors. All rights reserved. // http://code.google.com/p/goprotobuf/ // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // m...
Go
// Go support for Protocol Buffers - Google's data interchange format // // Copyright 2010 The Go Authors. All rights reserved. // http://code.google.com/p/goprotobuf/ // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // m...
Go
// Go support for Protocol Buffers - Google's data interchange format // // Copyright 2010 The Go Authors. All rights reserved. // http://code.google.com/p/goprotobuf/ // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // m...
Go
// Go support for Protocol Buffers - Google's data interchange format // // Copyright 2011 The Go Authors. All rights reserved. // http://code.google.com/p/goprotobuf/ // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // m...
Go
// Go support for Protocol Buffers - Google's data interchange format // // Copyright 2011 The Go Authors. All rights reserved. // http://code.google.com/p/goprotobuf/ // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // m...
Go
// Go support for Protocol Buffers - Google's data interchange format // // Copyright 2012 The Go Authors. All rights reserved. // http://code.google.com/p/goprotobuf/ // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // m...
Go
// Go support for Protocol Buffers - Google's data interchange format // // Copyright 2010 The Go Authors. All rights reserved. // http://code.google.com/p/goprotobuf/ // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // m...
Go
// Go support for Protocol Buffers - Google's data interchange format // // Copyright 2010 The Go Authors. All rights reserved. // http://code.google.com/p/goprotobuf/ // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // m...
Go
// Go support for Protocol Buffers - Google's data interchange format // // Copyright 2010 The Go Authors. All rights reserved. // http://code.google.com/p/goprotobuf/ // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // m...
Go
// Go support for Protocol Buffers - Google's data interchange format // // Copyright 2010 The Go Authors. All rights reserved. // http://code.google.com/p/goprotobuf/ // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // m...
Go
// Go support for Protocol Buffers - Google's data interchange format // // Copyright 2010 The Go Authors. All rights reserved. // http://code.google.com/p/goprotobuf/ // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // m...
Go
// Go support for Protocol Buffers - Google's data interchange format // // Copyright 2010 The Go Authors. All rights reserved. // http://code.google.com/p/goprotobuf/ // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // m...
Go
// Go support for Protocol Buffers - Google's data interchange format // // Copyright 2010 The Go Authors. All rights reserved. // http://code.google.com/p/goprotobuf/ // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // m...
Go
// Go support for Protocol Buffers - Google's data interchange format // // Copyright 2012 The Go Authors. All rights reserved. // http://code.google.com/p/goprotobuf/ // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // m...
Go
/** * Created with IntelliJ IDEA. * User: raphael * Date: 4/8/13 * Time: 10:45 PM * To change this template use File | Settings | File Templates. */ package main import "fmt" func main() { fmt.Printf("Hello world!") }
Go
/* * Copyright (C) 2013 rdrrlabs gmail com, * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This prog...
Go
/* * Copyright (C) 2013 rdrrlabs gmail com, * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This prog...
Go
/* * Copyright (C) 2013 rdrrlabs gmail com, * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This prog...
Go
/* * Copyright (C) 2013 rdrrlabs gmail com, * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This prog...
Go
/* * Copyright (C) 2013 rdrrlabs gmail com, * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This prog...
Go
package serv /* * Copyright (C) 2013 rdrrlabs gmail com, * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * ...
Go
// +build !appengine /* * Copyright (C) 2013 rdrrlabs gmail com, * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later vers...
Go
// +build !appengine /* * Copyright (C) 2013 rdrrlabs gmail com, * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later vers...
Go
// +build !appengine /* * Copyright (C) 2013 rdrrlabs gmail com, * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later vers...
Go
// Copyright 2011 Google Inc. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. package uuid import ( "encoding/binary" "fmt" "os" ) // A Domain represents a Version 2 domain type Domain byte // Domain constants for DCE Security (Version...
Go
// Copyright 2011 Google Inc. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. package uuid import ( "crypto/md5" "crypto/sha1" "hash" ) // Well known Name Space IDs and UUIDs var ( NameSpace_DNS = Parse("6ba7b810-9dad-11d1-80b4-00c04f...
Go
// Copyright 2014 Google Inc. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. package uuid import ( "encoding/binary" "sync" "time" ) // A Time represents a time as the number of 100's of nanoseconds since 15 Oct // 1582. type Time int6...
Go
// Copyright 2011 Google Inc. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. package uuid import ( "bytes" "crypto/rand" "fmt" "io" "strings" ) // A UUID is a 128 bit (16 byte) Universal Unique IDentifier as defined in RFC // 4122. t...
Go
// Copyright 2011 Google Inc. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. // The uuid package generates and inspects UUIDs. // // UUIDs are based on RFC 4122 and DCE 1.1: Authentication and Security Services. package uuid
Go
// Copyright 2011 Google Inc. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. package uuid import ( "encoding/binary" ) // NewUUID returns a Version 1 UUID based on the current NodeID and clock // sequence, and the current time. If the N...
Go
// Copyright 2011 Google Inc. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. package uuid import ( "io" ) // randomBits completely fills slice b with random data. func randomBits(b []byte) { if _, err := io.ReadFull(rander, b); err != n...
Go
// Copyright 2011 Google Inc. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. package uuid // Random returns a Random (Version 4) UUID or panics. // // The strength of the UUIDs is based on the strength of the crypto/rand // package. // // ...
Go
// Copyright 2011 Google Inc. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. package uuid import "net" var ( interfaces []net.Interface // cached list of interfaces ifname string // name of interface being used nodeID ...
Go
// go-qrcode // Copyright 2014 Tom Harwood package qrcode // symbol is a 2D array of bits representing a QR Code symbol. // // A symbol consists of size*size modules, with each module normally drawn as a // black or white square. The symbol also has a border of quietZoneSize modules. // // A (fictional) size=2, quiet...
Go
// go-qrcode // Copyright 2014 Tom Harwood package reedsolomon // Addition, subtraction, multiplication, and division in GF(2^8). // Operations are performed modulo x^8 + x^4 + x^3 + x^2 + 1. // http://en.wikipedia.org/wiki/Finite_field_arithmetic import "log" const ( gfZero = gfElement(0) gfOne = gfElement(1) ...
Go
// go-qrcode // Copyright 2014 Tom Harwood package reedsolomon import ( "fmt" "log" bitset "code.google.com/p/go-qrcode/bitset" ) // gfPoly is a polynomial over GF(2^8). type gfPoly struct { // The ith value is the coefficient of the ith degree of x. // term[0]*(x^0) + term[1]*(x^1) + term[2]*(x^2) ... term [...
Go
// go-qrcode // Copyright 2014 Tom Harwood // Package reedsolomon provides error correction encoding for QR Code 2005. // // QR Code 2005 uses a Reed-Solomon error correcting code to detect and correct // errors encountered during decoding. // // The generated RS codes are systematic, and consist of the input data wit...
Go
// go-qrcode // Copyright 2014 Tom Harwood /* Package qrcode implements a QR Code encoder. A QR Code is a matrix (two-dimensional) barcode. Arbitrary content may be encoded. A QR Code contains error recovery information to aid reading damaged or obscured codes. There are four levels of error recovery: qrcode.{Low, M...
Go
// go-qrcode // Copyright 2014 Tom Harwood package qrcode import ( "log" bitset "code.google.com/p/go-qrcode/bitset" ) // Error detection/recovery capacity. // // There are several levels of error detection/recovery capacity. Higher levels // of error recovery are able to correct more errors, with the trade-off o...
Go
// go-qrcode // Copyright 2014 Tom Harwood package qrcode import ( bitset "code.google.com/p/go-qrcode/bitset" ) type regularSymbol struct { version qrCodeVersion mask int data *bitset.Bitset symbol *symbol size int } // Abbreviated true/false. const ( b0 = false b1 = true ) var ( alignmentPatternC...
Go
// go-qrcode // Copyright 2014 Tom Harwood package qrcode import ( "errors" "log" bitset "code.google.com/p/go-qrcode/bitset" ) // Data encoding. // // The main data portion of a QR Code consists of one or more segments of data. // A segment consists of: // // - The segment Data Mode: numeric, alphanumeric, or b...
Go
// go-qrcode // Copyright 2014 Tom Harwood // Package bitset implements an append only bit array. // // To create a Bitset and append some bits: // // Bitset Contents // b := bitset.New() // {} // b.AppendBools(true, true, false) // {1, 1, 0} // b.AppendBools(true) ...
Go
// Go support for Protocol Buffers - Google's data interchange format // // Copyright 2010 The Go Authors. All rights reserved. // http://code.google.com/p/goprotobuf/ // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // m...
Go
// Go support for Protocol Buffers - Google's data interchange format // // Copyright 2010 The Go Authors. All rights reserved. // http://code.google.com/p/goprotobuf/ // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // m...
Go
// Go support for Protocol Buffers - Google's data interchange format // // Copyright 2010 The Go Authors. All rights reserved. // http://code.google.com/p/goprotobuf/ // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // m...
Go
// Go support for Protocol Buffers - Google's data interchange format // // Copyright 2010 The Go Authors. All rights reserved. // http://code.google.com/p/goprotobuf/ // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // m...
Go
// Go support for Protocol Buffers - Google's data interchange format // // Copyright 2011 The Go Authors. All rights reserved. // http://code.google.com/p/goprotobuf/ // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // m...
Go
// Go support for Protocol Buffers - Google's data interchange format // // Copyright 2011 The Go Authors. All rights reserved. // http://code.google.com/p/goprotobuf/ // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // m...
Go
// Go support for Protocol Buffers - Google's data interchange format // // Copyright 2012 The Go Authors. All rights reserved. // http://code.google.com/p/goprotobuf/ // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // m...
Go
// Go support for Protocol Buffers - Google's data interchange format // // Copyright 2012 The Go Authors. All rights reserved. // http://code.google.com/p/goprotobuf/ // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // m...
Go
// Go support for Protocol Buffers - Google's data interchange format // // Copyright 2010 The Go Authors. All rights reserved. // http://code.google.com/p/goprotobuf/ // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // m...
Go
// Go support for Protocol Buffers - Google's data interchange format // // Copyright 2010 The Go Authors. All rights reserved. // http://code.google.com/p/goprotobuf/ // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // m...
Go
// Go support for Protocol Buffers - Google's data interchange format // // Copyright 2010 The Go Authors. All rights reserved. // http://code.google.com/p/goprotobuf/ // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // m...
Go
// Go support for Protocol Buffers - Google's data interchange format // // Copyright 2010 The Go Authors. All rights reserved. // http://code.google.com/p/goprotobuf/ // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // m...
Go
// Go support for Protocol Buffers - Google's data interchange format // // Copyright 2010 The Go Authors. All rights reserved. // http://code.google.com/p/goprotobuf/ // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // m...
Go
// Go support for Protocol Buffers - Google's data interchange format // // Copyright 2010 The Go Authors. All rights reserved. // http://code.google.com/p/goprotobuf/ // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // m...
Go
// Go support for Protocol Buffers - Google's data interchange format // // Copyright 2010 The Go Authors. All rights reserved. // http://code.google.com/p/goprotobuf/ // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // m...
Go
// Go support for Protocol Buffers - Google's data interchange format // // Copyright 2012 The Go Authors. All rights reserved. // http://code.google.com/p/goprotobuf/ // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // m...
Go
/* Go program to decode an audio stream of Morse code into a stream of ASCII. See the ALGORITHM file for a description of what's going on, and 'proof.hs' as the original proof-of-concept implementation of this algorithm in Haskell. */ package main import ( "fmt" "math" "rand" "sort" ) type token int ...
Go
// A basic package to decode Wave files. package audio import ( "rog-go.googlecode.com/hg/exp/abc" "os" "fmt" "io" "encoding/binary" "reflect" "strings" ) func init() { Register("readwav", wInput, map[string]abc.Socket { "out": abc.Socket{SamplesT, abc.Male}, "1": abc.Socket{abc.StringT, abc.Female}, ...
Go
/* * jQuery File Upload Plugin GAE Go Example 3.1.0 * https://github.com/blueimp/jQuery-File-Upload * * Copyright 2011, Sebastian Tschan * https://blueimp.net * * Licensed under the MIT license: * http://www.opensource.org/licenses/MIT */ package app import ( "appengine" "appengine/blobstore" "appengine/i...
Go
package hello import ( "appengine" "appengine/datastore" "bytes" "html/template" "net/http" "strings" "time" ) type Greeting struct { Content []byte Date time.Time } func (g *Greeting) String() string { return string(g.Content) } type ListItem struct { Key *datastore....
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
// +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 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 ( "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 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" ) 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 main() { c := make(chan int, 2) c <- 1 c <- 2 fmt.Println(<-c) fmt.Println(<-c) }
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" 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" "time" ) func main() { fmt.Println("Welcome to the playground!") fmt.Println("The time is", time.Now()) }
Go
// +build OMIT package main import "fmt" func main() { fmt.Println("Hello, 世界") }
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 "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() { 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" 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 ( "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" 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 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" 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
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() { 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 { 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 "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" // 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 { X int Y int } func main() { fmt.Println(Vertex{1, 2}) }
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() { 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" 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
// +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" 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" 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 ( "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 ( "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 // In the following line, v is a Vertex (not *Vertex) // and does NOT...
Go