GoLang provides a wide variety of data types, which can be categorized into four major groups: basic types, aggregate types, reference types, and interface types.

1. Basic Data Types

These are the fundamental data types in Go.

Numeric Types

1. Integer Types:

   • Signed Integers:
     • int (platform-dependent, typically 32 or 64 bits)
     • int8, int16, int32, int64
   • Unsigned Integers:
     • uint (platform-dependent)
     • uint8, uint16, uint32, uint64
     • byte (alias for uint8)

2. Floating-Point Numbers:

   • float32, float64

3. Complex Numbers:

   • complex64 (real and imaginary parts as float32)
   • complex128 (real and imaginary parts as float64)

4. Other Numeric Types:

   • rune (alias for int32, represents Unicode code points)

Boolean

• bool
  • Values: true or false.

String

• string
  • Represents a sequence of bytes (characters).
  • Immutable in Go.

2. Aggregate Types

1. Array:

   • Fixed-size collection of elements of the same type.

     var arr [5]int  
       

2. Slice:

   • Dynamically-sized, flexible view into an array.

     var slice []int  slice = append(slice, 10)  
       

3. Struct:

   • Collection of fields.

     type Person struct {        Name string      Age  int    }  
       

3. Reference Types

1. Pointer:

   • Stores the memory address of a value.

     var ptr *int  
       

2. Function:

   • Functions are first-class citizens in Go and can be assigned to variables or passed as arguments.

3. Map:

   • Key-value pairs, similar to dictionaries in Python.

     var m map[string]int  
       

4. Channel:

   • Used for communication between goroutines.

     var ch chan int  
       

4. Interface Types

• Define a set of methods that a type must implement.

  type Shape interface { Area() float64  }  
    

Type Conversion

Go is strictly typed, so explicit conversion is required between types.

var a int = 10  var b float64 = float64(a)

Example Usage

package main    import "fmt"    
func main() {      
var age int = 25      
var price float64 = 19.99      
var name string = "GoLang"      
var active bool = true        
fmt.Println("Name:", name)      
fmt.Println("Age:", age)      
fmt.Println("Price:", price)      
fmt.Println("Active:", active)  
}

If you'd like a deeper dive into a specific type, let me know!