Learning Go. 2nd Edition Jon Bodner

Learning Go. 2nd Edition Jon Bodner - okladka książki

Autor:: Jon Bodner
Wydawnictwo:: O'Reilly Media (Z chęcią przeczytam książkę w języku polskim)
Ocena:: Bądź pierwszym, który oceni tę książkę
Stron:: 494
Dostępne formaty:: ePub

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Go has rapidly become the preferred language for building web services. Plenty of tutorials are available to teach Go's syntax to developers with experience in other programming languages, but tutorials aren't enough. They don't teach Go's idioms, so developers end up recreating patterns that don't make sense in a Go context. This practical guide provides the essential background you need to write clear and idiomatic Go.

No matter your level of experience, you'll learn how to think like a Go developer. Author Jon Bodner introduces the design patterns experienced Go developers have adopted and explores the rationale for using them. This updated edition also shows you how Go's generics support fits into the language.

This book helps you:

Write idiomatic code in Go and design a Go project
Understand the reasons behind Go's design decisions
Set up a Go development environment for a solo developer or team
Learn how and when to use reflection, unsafe, and cgo
Discover how Go's features allow the language to run efficiently
Know which Go features you should use sparingly or not at all
Use Go's tools to improve performance, optimize memory usage, and reduce garbage collection
Learn how to use Go's advanced development tools

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O autorze książki

Jon Bodner jest inżynierem oprogramowania i architektem z dwudziestoletnim doświadczeniem. Zajmował się tworzeniem i rozwijaniem aplikacji dla różnych sektorów, między innymi dla finansów, handlu, ochrony zdrowia czy administracji. Często występuje na konferencjach dotyczących języka Go. Jest też współautorem wielu narzędzi służących do rozwijania oprogramowania.

Kup polskie wydanie:

Język Go. Tworzenie kodu z wykorzystaniem najlepszych konwencji i praktyk. Wydanie II

Autor:: Jon Bodner

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Szczegóły książki

ISBN Ebooka:: 978-10-981-3925-4, 9781098139254
Data wydania ebooka :: 2024-01-10 Data wydania ebooka często jest dniem wprowadzenia tytułu do sprzedaży i może nie być równoznaczna z datą wydania książki papierowej. Dodatkowe informacje możesz znaleźć w darmowym fragmencie. Jeśli masz wątpliwości skontaktuj się z nami sklep@ebookpoint.pl.
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Rozmiar pliku Mobi:: 10.4MB

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Kategorie

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Informatyka » Programowanie
Informatyka » Programowanie » Go

Spis treści książki

Preface
- Who Should Read This Book
- Conventions Used in This Book
- Using Code Examples
- OReilly Online Learning
- How to Contact Us
- Acknowledgments for the 2nd Edition
- Acknowledgments for the 1st Edition
1. Setting Up Your Go Environment
- Installing the Go Tools
  - Troubleshooting Your Go Installation
  - Go Tooling
- Your First Go Program
  - Making a Go Module
  - go build
  - go fmt
  - go vet
- Choose Your Tools
  - Visual Studio Code
  - GoLand
  - The Go Playground
- Makefiles
- The Go Compatibility Promise
- Staying Up-to-Date
- Exercises
- Wrapping Up
2. Predeclared Types and Declarations
- The Predeclared Types
  - The Zero Value
  - Literals
  - Booleans
  - Numeric Types
    - Integer types
    - The special integer types
    - Choosing which integer to use
    - Integer operators
    - Floating-point types
    - Complex types (youre probably not going to use these)
  - A Taste of Strings and Runes
  - Explicit Type Conversion
  - Literals Are Untyped
- var Versus :=
- Using const
- Typed and Untyped Constants
- Unused Variables
- Naming Variables and Constants
- Exercises
- Wrapping Up
3. Composite Types
- ArraysToo Rigid to Use Directly
- Slices
  - len
  - append
  - Capacity
  - make
  - Emptying a Slice
  - Declaring Your Slice
  - Slicing Slices
  - copy
  - Converting Arrays to Slices
  - Converting Slices to Arrays
- Strings and Runes and Bytes
- Maps
  - Reading and Writing a Map
  - The comma ok Idiom
  - Deleting from Maps
  - Emptying a Map
  - Comparing Maps
  - Using Maps as Sets
- Structs
  - Anonymous Structs
  - Comparing and Converting Structs
- Exercises
- Wrapping Up
4. Blocks, Shadows, and Control Structures
- Blocks
- Shadowing Variables
- if
- for, Four Ways
  - The Complete for Statement
  - The Condition-Only for Statement
  - The Infinite for Statement
  - break and continue
  - The for-range Statement
    - Iterating over maps
    - Iterating over strings
    - The for-range value is a copy
  - Labeling Your for Statements
  - Choosing the Right for Statement
- switch
  - Blank Switches
  - Choosing Between if and switch
- gotoYes, goto
- Exercises
- Wrapping Up
5. Functions
- Declaring and Calling Functions
  - Simulating Named and Optional Parameters
  - Variadic Input Parameters and Slices
  - Multiple Return Values
  - Multiple Return Values Are Multiple Values
  - Ignoring Returned Values
  - Named Return Values
  - Blank ReturnsNever Use These!
- Functions Are Values
  - Function Type Declarations
  - Anonymous Functions
- Closures
  - Passing Functions as Parameters
  - Returning Functions from Functions
- defer
- Go Is Call by Value
- Exercises
- Wrapping Up
6. Pointers
- A Quick Pointer Primer
- Dont Fear the Pointers
- Pointers Indicate Mutable Parameters
- Pointers Are a Last Resort
- Pointer Passing Performance
- The Zero Value Versus No Value
- The Difference Between Maps and Slices
- Slices as Buffers
- Reducing the Garbage Collectors Workload
- Tuning the Garbage Collector
- Exercises
- Wrapping Up
7. Types, Methods, and Interfaces
- Types in Go
- Methods
  - Pointer Receivers and Value Receivers
  - Code Your Methods for nil Instances
  - Methods Are Functions Too
  - Functions Versus Methods
  - Type Declarations Arent Inheritance
  - Types Are Executable Documentation
- iota Is for EnumerationsSometimes
- Use Embedding for Composition
- Embedding Is Not Inheritance
- A Quick Lesson on Interfaces
- Interfaces Are Type-Safe Duck Typing
- Embedding and Interfaces
- Accept Interfaces, Return Structs
- Interfaces and nil
- Interfaces Are Comparable
- The Empty Interface Says Nothing
- Type Assertions and Type Switches
- Use Type Assertions and Type Switches Sparingly
- Function Types Are a Bridge to Interfaces
- Implicit Interfaces Make Dependency Injection Easier
- Wire
- Go Isnt Particularly Object-Oriented (and Thats Great)
- Exercises
- Wrapping Up
8. Generics
- Generics Reduce Repetitive Code and Increase Type Safety
- Introducing Generics in Go
- Generic Functions Abstract Algorithms
- Generics and Interfaces
- Use Type Terms to Specify Operators
- Type Inference and Generics
- Type Elements Limit Constants
- Combining Generic Functions with Generic Data Structures
- More on comparable
- Things That Are Left Out
- Idiomatic Go and Generics
- Adding Generics to the Standard Library
- Future Features Unlocked
- Exercises
- Wrapping Up
9. Errors
- How to Handle Errors: The Basics
- Use Strings for Simple Errors
- Sentinel Errors
- Errors Are Values
- Wrapping Errors
- Wrapping Multiple Errors
- Is and As
- Wrapping Errors with defer
- panic and recover
- Getting a Stack Trace from an Error
- Exercises
- Wrapping Up
10. Modules, Packages, and Imports
- Repositories, Modules, and Packages
- Using go.mod
  - Use the go Directive to Manage Go Build Versions
  - The require Directive
- Building Packages
  - Importing and Exporting
  - Creating and Accessing a Package
  - Naming Packages
  - Overriding a Packages Name
  - Documenting Your Code with Go Doc Comments
  - Using the internal Package
  - Avoiding Circular Dependencies
  - Organizing Your Module
  - Gracefully Renaming and Reorganizing Your API
  - Avoiding the init Function if Possible
- Working with Modules
  - Importing Third-Party Code
  - Working with Versions
  - Minimal Version Selection
  - Updating to Compatible Versions
  - Updating to Incompatible Versions
  - Vendoring
  - Using pkg.go.dev
- Publishing Your Module
- Versioning Your Module
  - Overriding Dependencies
  - Retracting a Version of Your Module
  - Using Workspaces to Modify Modules Simultaneously
- Module Proxy Servers
  - Specifying a Proxy Server
  - Using Private Repositories
- Additional Details
- Exercises
- Wrapping Up
11. Go Tooling
- Using go run to Try Out Small Programs
- Adding Third-Party Tools with go install
- Improving Import Formatting with goimports
- Using Code-Quality Scanners
  - staticcheck
  - revive
  - golangci-lint
- Using govulncheck to Scan for Vulnerable Dependencies
- Embedding Content into Your Program
- Embedding Hidden Files
- Using go generate
- Working with go generate and Makefiles
- Reading the Build Info Inside a Go Binary
- Building Go Binaries for Other Platforms
- Using Build Tags
- Testing Versions of Go
- Using go help to Learn More About Go Tooling
- Exercises
- Wrapping Up
12. Concurrency in Go
- When to Use Concurrency
- Goroutines
- Channels
  - Reading, Writing, and Buffering
  - Using for-range and Channels
  - Closing a Channel
  - Understanding How Channels Behave
- select
- Concurrency Practices and Patterns
  - Keep Your APIs Concurrency-Free
  - Goroutines, for Loops, and Varying Variables
  - Always Clean Up Your Goroutines
  - Use the Context to Terminate Goroutines
  - Know When to Use Buffered and Unbuffered Channels
  - Implement Backpressure
  - Turn Off a case in a select
  - Time Out Code
  - Use WaitGroups
  - Run Code Exactly Once
  - Put Your Concurrent Tools Together
- When to Use Mutexes Instead of Channels
- AtomicsYou Probably Dont Need These
- Where to Learn More About Concurrency
- Exercises
- Wrapping Up
13. The Standard Library
- io and Friends
- time
  - Monotonic Time
  - Timers and Timeouts
- encoding/json
  - Using Struct Tags to Add Metadata
  - Unmarshaling and Marshaling
  - JSON, Readers, and Writers
  - Encoding and Decoding JSON Streams
  - Custom JSON Parsing
- net/http
  - The Client
  - The Server
    - Middleware
    - Use third-party modules to enhance the server
  - ResponseController
- Structured Logging
- Exercises
- Wrapping Up
14. The Context
- What Is the Context?
- Values
- Cancellation
- Contexts with Deadlines
- Context Cancellation in Your Own Code
- Exercises
- Wrapping Up
15. Writing Tests
- Understanding the Basics of Testing
  - Reporting Test Failures
  - Setting Up and Tearing Down
  - Testing with Environment Variables
  - Storing Sample Test Data
  - Caching Test Results
  - Testing Your Public API
  - Using go-cmp to Compare Test Results
- Running Table Tests
- Running Tests Concurrently
- Checking Your Code Coverage
- Fuzzing
- Using Benchmarks
- Using Stubs in Go
- Using httptest
- Using Integration Tests and Build Tags
- Finding Concurrency Problems with the Data Race Detector
- Exercises
- Wrapping Up
16. Here Be Dragons: Reflect, Unsafe, and Cgo
- Reflection Lets You Work with Types at Runtime
  - Types, Kinds, and Values
    - Types and kinds
    - Values
  - Make New Values
  - Use Reflection to Check If an Interfaces Value Is nil
  - Use Reflection to Write a Data Marshaler
  - Build Functions with Reflection to Automate Repetitive Tasks
  - You Can Build Structs with Reflection, but Dont
  - Reflection Cant Make Methods
  - Use Reflection Only if Its Worthwhile
- unsafe Is Unsafe
  - Using Sizeof and Offsetof
  - Using unsafe to Convert External Binary Data
  - Accessing Unexported Fields
  - Using unsafe Tools
- Cgo Is for Integration, Not Performance
- Exercises
- Wrapping Up
Index