nguyenta99

Golang (or Go) has a simple but powerful set of data types. Here's a quick breakdown of the main types you’ll encounter:

Type	Example	Description
`int`, `int8`, `int16`, `int32`, `int64`	`var a int = 42`	Signed integers (size-specific)
`uint`, `uint8`, `uint16`, `uint32`, `uint64`	`var b uint8 = 255`	Unsigned integers
`float32`, `float64`	`var c float64 = 3.14`	Floating point numbers
`complex64`, `complex128`	`var z complex128 = 1 + 2i`	Complex numbers
`byte`	alias for `uint8`	Used for raw data / binary
`rune`	alias for `int32`	Used for Unicode characters

var isReady bool = true

var message string = "Hello, Go!"

Type	Description
`array`	Fixed-length sequence of elements
`slice`	Dynamic array
`map`	Key-value pairs (like a dictionary)
`struct`	Custom data structure

Examples

arr := [3]int{1, 2, 3}
slice := []string{"Go", "Rust"}
m := map[string]int{"one": 1, "two": 2}

type User struct {
    Name string
    Age  int
}

🧩 Pointer

var x = 10
var p *int = &x

type Shape interface {
    Area() float64
}

[Go Tutorials P2] Data types