0/8 Objectives Completed (0%)

Introduction to Go and Basic Constructs

Origin, Context and Popularity of GO

Origin and Evolution of Go Reasons for Developing Go Characteristics of Go Test Yourself

Basic Constructs and Elementary Data Types

Filenames, Keywords and Identifiers Import Functionality Overview of Functions Overview of Data Types Constants Variables Scope of Variables Elementary Types Operators Challenge: Temperature Conversion Solution Review: Temperature Conversion Strings Strings and strconv Package Times and Dates Pointers Quiz: Deduce the Outputs

Control Structures

The if-else Construct Testing for Errors on Functions The switch-case Construct Challenge: Season of a Month Solution Review: Season of a Month The for Construct The for range Construct Break and Continue Use of Labels - goto Exercise: Deduce the Outputs

Deep Dive into Go Functions and Data Structures

Functions

Introduction to Functions Parameters and Return Values Challenge: Multiple Return Values Solution Review: Multiple Return Values Challenge: Variable Number of Arguments Solution Review: Variable Number of Arguments Defer and Tracing Built-in Functions Recursive Functions Challenge: Compute Factorial of a Number Solution Review: Compute Factorial of a Number Higher-Order Functions Challenge: Filter Even and Odd Numbers Solution Review: Filter Even and Odd Numbers Closures Functions as Return Variables Debugging with Closures Optimizing Programs Quiz: Deduce the Outputs

Arrays and Slices

Declaration and Initialization

Array Literals and Parameters

Challenge: Filling Array with Loop Counter

Solution Review: Filling Array with Loop Counter

Challenge: Finding Fibonacci Numbers with Array

Solution Review: Finding Fibonacci Numbers with Array

Slices with Functions

Challenge: Finding Fibonacci Numbers with Slices

Solution Review: Finding Fibonacci Numbers with Slices

Multidimensionality

Bytes and Slices

The for-range Construct

Copying and Appending Slices

Challenge: Magnify a Slice

Solution Review: Magnify a Slice

Challenge: Inserting Slice in a Slice

Solution Review: Inserting Slice in a Slice

Challenge: Filtering with Higher-Order Functions

Solution Review: Filtering with Higher-Order Functions

Applying Strings, Arrays and Slices

Challenge: Bubble Sort the Slice

Solution Review: Bubble Sort the Slice

Challenge: Reverse a String

Solution Review: Reverse a String

Quiz: Deduce the Outputs

Maps

Declaration and Initialization Existence of Key-Value Item The for range Construct Challenge: Map the Days Solution Review: Map the Days A Slice of Maps Sorting and Inverting a Map Quiz: Deduce the Outputs

Advanced Go Concepts: Packages, Structs, and Interfaces

Packages

Overview of the Standard Library Challenge: Construct a Double-Linked List Solution Review: Construct a Double-Linked List The regexp Package Locking and the sync Package Accurate Computations and the big Package Custom Packages and Visibility Documenting Your Packages Custom Packages: Folder Structure, go install and go test Using git for Distribution External Packages, Projects and Libraries Installing External Packages

Structs and Methods

Introduction to Struct Advanced Structs Concepts Factory Method Structs with Tags Anonymous Fields and Embedded Structs Challenge: Anonymous Struct Solution Review: Anonymous Struct Introduction to Methods Methods Versus Functions Challenge: Coordinates of a Point Solution Review: Coordinates of a Point Challenge: Make a Rectangle Solution Review: Make a Rectangle Challenge: Decide Employee Salary Solution Review: Decide Employee Salary Receivers and Methods as Pointers and Values Non-Exported Fields String() Method and Format Specifiers Methods on Embedded Types Multiple Inheritance Challenge: Implement Stack Data Structure Solution Review: Implement Stack Data Structure Garbage Collection and SetFinalizer Quiz: Deduce the Outputs

Interfaces and Reflection

What is an Interface?

Challenge: Make a Simple Interface

Solution Review: Make a Simple Interface

Embedded Interface and Type Assertions

The Type Switch

Challenge: Advancing the Simple Interface

Solution Review: Advancing the Simple Interface

Implementation of Interfaces

Sorting with the Sorter Interface

Challenge: Advancing the Shapes Analysis

Solution Review: Advancing the Shapes Analysis

Challenge: Sort People with Sorter Interface

Solution Review: Sort People with Sorter Interface

Reading and Writing

Empty Interface

Challenge: Implement Miner Interface

Solution Review: Implement Miner Interface

The reflect Package

Printf and Reflection

Interfaces and Dynamic Typing

Structs, Collections and Higher-Order Functions

Challenge: Make a Stack with Variable Internal Types

Solution Review: Make a Stack with Variable Internal Types

The Object Orientation in Go

Quiz: Deduce the Outputs

Practical Go: File Handling, Error Management, and Concurrency

Reading and Writing

Reading Input from the User

Challenge: Analyzing Input from Keyboard

Solution Review: Analyzing Input from Keyboard

Reading from a File

Writing to a File

Challenge: Read CSV File

Solution Review: Read CSV File

Challenge: Writing to a WIKI Page

Solution Review: Writing to a WIKI Page

Reading Arguments from the Command-Line

Reading Files with a Buffer

Reading and Writing Files with Slices

Scanning Inputs

A Practical Example of Interfaces

The JSON Data Format

Decoding with JSON

The XML Data Format

Data Transport through gob

Challenge: Decode the Contents

Solution Review: Decode the Contents

Cryptography with Go

Exercise: Deduce the Outputs

Error-Handling and Testing

Error-Handling Run-time Exceptions and Panic Recover Error-Handling and Panicking in a User-Defined Package Error-Handling Scheme with Closures Challenge: Generate Panic from Division by 0 Solution Review: Generate Panic from Division by 0 Starting an External Command or Program Testing and Benchmarking in Go Testing: A Concrete Example Using Table-Driven Tests Investigating Performance Exercise: Deduce the Outputs

Goroutines and Channels

Handling Concurrency and Parallelism with Go Implementing Goroutines Introduction to Channels Synchronous and Asynchronous Communication Challenge: Demonstrate the Blocking Nature Solution Review: Demonstrate the Blocking Nature Semaphore Pattern Channel Factory and Producer-Consumer Pattern Challenge: Summing the Integers Solution Review: Summing the Integers Channel Directionality Synchronization of goroutines Switching between goroutines Challenge: Devise Random Bit Generator Solution Review: Devise Random Bit Generator Challenge: Map Polar Points to Cartesian Points Solution Review: Map Polar Points to Cartesian Points Channels, Timeouts, and Tickers Using recover with goroutines Tasks and Worker Processes Implementing a Lazy Generator Anonymous Closure Implementing Futures Multiplexing Limiting the Number of Requests Chaining and Parallelizing Computation The Leaky Bucket Algorithm Benchmarking, Accessing and Listening Exercise: Deduce the Outputs

Building Web Applications and Networking in Go

Networking, Templating and Web-Applications

A TCP Server A Simple Web Server Polling Websites and Reading Web Page Writing a Simple Web Application Challenge: Web Application for Statistics Solution Review: Web Application for Statistics Making a Web Application Robust Writing Web Application with Templates Exploring the template Package Challenge: Web Application for Serving Guests Solution Review: Web Application for Serving Guests An Elaborate Web Server Remote Procedure Calls with RPC Sending Mails with SMTP Go in the Cloud

Optimizing Go Code: Best Practices and Performance

Common Go Pitfalls and Patterns

Regular Mistakes and Suggestions Highlights from the Previous Chapters The comma, ok Pattern The defer Pattern Visibility and Operator Patterns

Performance Advices

Strings, Arrays and Slices Structs, Interfaces and Maps Functions and Files Goroutines and Networking Suggestions and Considerations

Capstone Project: Building a Complete Application

Building a Complete Application

Introduction Setting up the Structure of Application Our User Interface Persistent Storage with gob Using goroutines for Performance Persistent Storage with JSON Enhancements

Supplementary Go Resources and Environment Setup

Appendix

Platforms and Architectures Installing Go and the Go Tools-Chain in Binary Format Installing Go from Source Go Work Environment Basic Requirements for a Go Environment Editors and Integrated Development Environments Debugging Formatting the Code Building and Running Go-Programs Searching for Help and Documenting the Code Tools and Go's Performance Interaction with C and C++Helpful Resources

Reading and Writing Files with Slices

This lesson explains in detail how to use a slice for reading and writing to files.

Slices provide the standard-Go way to handle I/O buffers; they are used in the following second version of the function cat, which reads a file in an infinite for-loop (until end-of-file EOF) in a sliced buffer, and writes it to standard output.

Get hands-on with 1400+ tech skills courses.