The Go Programming Language

Inhaltsverzeichnis

Preface xi

Chapter 1: Tutorial 1

1.1 Hello, World 1

1.2 Command-Line Arguments 4

1.3 Finding Duplicate Lines 8

1.4 Animated GIFs 13

1.5 Fetching a URL 15

1.6 Fetching URLs Concurrently 17

1.7 A Web Server 19

1.8 Loose Ends 23

Chapter 2: Program Structure 27

2.1 Names 27

2.2 Declarations 28

2.3 Variables 30

2.4 Assignments 36

2.5 Type Declarations 39

2.6 Packages and Files 41

2.7 Scope 45

Chapter 3: Basic Data Types 51

3.1 Integers 51

3.2 Floating-Point Numbers 56

3.3 Complex Numbers 61

3.4 Booleans 63

3.5 Strings 64

3.6 Constants 75

Chapter 4: Composite Types 81

4.1 Arrays 81

4.2 Slices 84

4.3 Maps 93

4.4 Structs 99

4.5 JSON 107

4.6 Text and HTML Templates 113

Chapter 5: Functions 119

5.1 Function Declarations 119

5.2 Recursion 121

5.3 Multiple Return Values 124

5.4 Errors 127

5.5 Function Values 132

5.6 Anonymous Functions 135

5.7 Variadic Functions 142

5.8 Deferred Function Calls 143

5.9 Panic 148

5.10 Recover 151

Chapter 6:. Methods 155

6.1 Method Declarations 155

6.2 Methods with a Pointer Receiver 158

6.3 Composing Types by Struct Embedding 161

6.4 Method Values and Expressions 164

6.5 Example: Bit Vector Type 165

6.6 Encapsulation 168

Chapter 7: Interfaces 171

7.1 Interfaces as Contracts 171

7.2 Interface Types 174

7.3 Interface Satisfaction 175

7.4 Parsing Flags with flag.Value 179

7.5 Interface Values 181

7.6 Sorting with sort.Interface 186

7.7 The http.Handler Interface 191

7.8 The error Interface 196

7.9 Example: Expression Evaluator 197

7.10 Type Assertions 205

7.11 Discriminating Errors with Type Assertions 206

7.12 Querying Behaviors with Interface Type Assertions 208

7.13 Type Switches 210

7.14 Example: Token-Based XML Decoding 213

7.15 A Few Words of Advice 216

Chapter 8: Goroutines and Channels 217

8.1 Goroutines 217

8.2 Example: Concurrent Clock Server 219

8.3 Example: Concu rent Echo Server 222

8.4 Channels 225

8.5 Looping in Parallel 234

8.6 Example: Concurrent Web Crawler 239

8.7 Multiplexing with select 244

8.8 Example: Concurrent Directory Traversal 247

8.9 Cancellation 251

8.10 Example: Chat Server 253

Chapter 9: Concurrency with Shared Variables 257

9.1 Race Conditions 257

9.2 Mutual Exclusion: sync.Mutex 262

9.3 Read/Write Mutexes: sync.RWMutex 266

9.4 Memory Synchronization 267

9.5 Lazy Initialization: sync.Once 268

9.6 The Race Detector 271

9.7 Example: Concurrent Non-Blocking Cache 272

9.8 Goroutines and Threads 280

Chapter 10: Packages and the Go Tool 283

10.1 Introduction 283

10.2 Import Paths 284

10.3 The Package Declaration 285

10.4 Import Declarations 285

10.5 Blank Imports 286

10.6 Packages and Naming 289

10.7 The Go Tool 290

Chapter 11: Testing 301

11.1 The go test Tool 302

11.2 Test Functions 302

11.3 Coverage 318

11.4 Benchmark Functions 321

11.5 Profiling 323

11.6 Example Functions 326

Chapter 12: Reflection 329

12.1 Why Reflection? 329

12.2 reflect.Type and reflect.Value 330

12.3 Display, a Recursive Value Printer 333

12.4 Example: Encoding S-Expressions 338

12.5 Setting Variables with reflect.Value 341

12.6 Example: Decoding S-Expressions 344

12.7 Accessing Struct Field Tags 348

12.8 Displaying the Methods of a Type 351

12.9 A Word of Caution 352

Chapter 13: Low-Level Programming 353

13.1 unsafe.Sizeof, Alignof, and Offsetof 354

13.2 unsafe.Pointer 356

13.3 Example: Deep Equivalence 358

13.4 Calling C Code with cgo 361

13.5 Another Word of Caution 366

Index 367

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Beschreibung

The book will quickly get students started using Go effectively from the beginning, and by the end, they will know how to use it well to write clear, idiomatic and efficient programs to solve real-world problems. They'll understand not just how to use its standard libraries, but how they work, and how to apply the same design techniques to their own projects.

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Erscheinungsdatum

30.10.2015

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Beschreibung

Details

Verkaufsrang

24215

Einband

Taschenbuch

Erscheinungsdatum

30.10.2015

Verlag

Addison-Wesley

Seitenzahl

400

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18,6/23,1/2,2 cm

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748 g

Sprache

Englisch

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978-0-13-419044-0

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Die Leseprobe wird geladen.
  • The Go Programming Language
  • Preface xi

    Chapter 1: Tutorial 1

    1.1 Hello, World 1

    1.2 Command-Line Arguments 4

    1.3 Finding Duplicate Lines 8

    1.4 Animated GIFs 13

    1.5 Fetching a URL 15

    1.6 Fetching URLs Concurrently 17

    1.7 A Web Server 19

    1.8 Loose Ends 23

    Chapter 2: Program Structure 27

    2.1 Names 27

    2.2 Declarations 28

    2.3 Variables 30

    2.4 Assignments 36

    2.5 Type Declarations 39

    2.6 Packages and Files 41

    2.7 Scope 45

    Chapter 3: Basic Data Types 51

    3.1 Integers 51

    3.2 Floating-Point Numbers 56

    3.3 Complex Numbers 61

    3.4 Booleans 63

    3.5 Strings 64

    3.6 Constants 75

    Chapter 4: Composite Types 81

    4.1 Arrays 81

    4.2 Slices 84

    4.3 Maps 93

    4.4 Structs 99

    4.5 JSON 107

    4.6 Text and HTML Templates 113

    Chapter 5: Functions 119

    5.1 Function Declarations 119

    5.2 Recursion 121

    5.3 Multiple Return Values 124

    5.4 Errors 127

    5.5 Function Values 132

    5.6 Anonymous Functions 135

    5.7 Variadic Functions 142

    5.8 Deferred Function Calls 143

    5.9 Panic 148

    5.10 Recover 151

    Chapter 6:. Methods 155

    6.1 Method Declarations 155

    6.2 Methods with a Pointer Receiver 158

    6.3 Composing Types by Struct Embedding 161

    6.4 Method Values and Expressions 164

    6.5 Example: Bit Vector Type 165

    6.6 Encapsulation 168

    Chapter 7: Interfaces 171

    7.1 Interfaces as Contracts 171

    7.2 Interface Types 174

    7.3 Interface Satisfaction 175

    7.4 Parsing Flags with flag.Value 179

    7.5 Interface Values 181

    7.6 Sorting with sort.Interface 186

    7.7 The http.Handler Interface 191

    7.8 The error Interface 196

    7.9 Example: Expression Evaluator 197

    7.10 Type Assertions 205

    7.11 Discriminating Errors with Type Assertions 206

    7.12 Querying Behaviors with Interface Type Assertions 208

    7.13 Type Switches 210

    7.14 Example: Token-Based XML Decoding 213

    7.15 A Few Words of Advice 216

    Chapter 8: Goroutines and Channels 217

    8.1 Goroutines 217

    8.2 Example: Concurrent Clock Server 219

    8.3 Example: Concu rent Echo Server 222

    8.4 Channels 225

    8.5 Looping in Parallel 234

    8.6 Example: Concurrent Web Crawler 239

    8.7 Multiplexing with select 244

    8.8 Example: Concurrent Directory Traversal 247

    8.9 Cancellation 251

    8.10 Example: Chat Server 253

    Chapter 9: Concurrency with Shared Variables 257

    9.1 Race Conditions 257

    9.2 Mutual Exclusion: sync.Mutex 262

    9.3 Read/Write Mutexes: sync.RWMutex 266

    9.4 Memory Synchronization 267

    9.5 Lazy Initialization: sync.Once 268

    9.6 The Race Detector 271

    9.7 Example: Concurrent Non-Blocking Cache 272

    9.8 Goroutines and Threads 280

    Chapter 10: Packages and the Go Tool 283

    10.1 Introduction 283

    10.2 Import Paths 284

    10.3 The Package Declaration 285

    10.4 Import Declarations 285

    10.5 Blank Imports 286

    10.6 Packages and Naming 289

    10.7 The Go Tool 290

    Chapter 11: Testing 301

    11.1 The go test Tool 302

    11.2 Test Functions 302

    11.3 Coverage 318

    11.4 Benchmark Functions 321

    11.5 Profiling 323

    11.6 Example Functions 326

    Chapter 12: Reflection 329

    12.1 Why Reflection? 329

    12.2 reflect.Type and reflect.Value 330

    12.3 Display, a Recursive Value Printer 333

    12.4 Example: Encoding S-Expressions 338

    12.5 Setting Variables with reflect.Value 341

    12.6 Example: Decoding S-Expressions 344

    12.7 Accessing Struct Field Tags 348

    12.8 Displaying the Methods of a Type 351

    12.9 A Word of Caution 352

    Chapter 13: Low-Level Programming 353

    13.1 unsafe.Sizeof, Alignof, and Offsetof 354

    13.2 unsafe.Pointer 356

    13.3 Example: Deep Equivalence 358

    13.4 Calling C Code with cgo 361

    13.5 Another Word of Caution 366

    Index 367