What variable types are there in Go?

In Go, there are several basic variable types:

• Basic types:

  • bool — logical type (true/false)
  • string — string
  • Integer types: int, int8, int16, int32, int64, as well as unsigned uint, uint8 (alias for byte), uint16, uint32, uint64
  • float32, float64 — floating-point numbers
  • complex64, complex128 — complex numbers

• Composite types:

  • Arrays and slices ([n]T, []T)
  • Structures (struct)
  • Maps (map[K]V)
  • Interfaces (interface{})
  • Channels (chan T)

Example of declaring variables of different types:

var a int = 10
var b string = "hello"
var c bool = true
var d []int = []int{1, 2, 3}
var e map[string]int = map[string]int{"key": 1}