Go (or Golang) is a modern programming language developed by Google, designed for building fast and reliable applications, especially in cloud, DevOps, and distributed systems. Nowadays, many big tech companies have also adopted and rely on it, including:
- Google uses for services behind YouTube and Google Cloud.
- Uber moved parts of their real-time ride systems to Go for speed.
- Netflix uses it for server-side services that need quick responses.
- Dropbox rewrote key infrastructure in Go to handle millions of file syncs per second, etc.
First Go Program
Here is a simple Go program that prints a string. You can try editing it to print your own name.
package main
import "fmt"
// Main function
func main() {
fmt.Println("Hello Geeks")
}
Output:
Hello GeeksGetting Started with Go
Before starting with Go programming, we first need to set up Go on our system and run a simple program to verify the installation:
Fundamentals of Go
In this section, we’ll cover the core building blocks of Go such as identifiers, variables, data types, operators, and declarations that form the foundation of every Go program.
- Identifiers in Golang
- Keywords in Golang
- Data Types
- Variables
- Constants
- Rune in Golang
- Operators in Golang
- Scope of Variables
- Type Casting
- var Keyword in Golang
- Short Declaration Operator(:=)
- var keyword vs short declaration operator
Control Statements
This section covers decision-making and looping constructs in Go, essential for controlling program flow.
- Decision Making Statements
- Loops in Golang
- Loop Control Statements
- Switch Statement in Go
- Deadlock and Default Case in Select Statement
Functions & Methods
In this section, we’ll explore Go functions and methods, including how to define them, pass arguments, return multiple values, use special features like defer, and work with methods for struct types.