sample to check if the `n` bit of a `a` byte is true or false

check_bit.go

package main

import (
	"fmt"
)

func main() {
	var a byte
	a = 0x02
	fmt.Printf("%08b\n", a)
	
	n := 1
	
	_bit := uint32(n % 8)
	b := ((a & (1 << _bit)) != 0)


	fmt.Println("!", b)
}