binarygonumeric

Converting from an integer to its binary representation

Has anyone got an idea if there is any inbuilt functionality in Go for converting from any one of the numeric types to its binary number form.

For example, if 123 was the input, the string "1111011" would be the output.

Solution

  • The strconv package has FormatInt, which accepts an int64 and lets you specify the base.

    n := int64(123)

fmt.Println(strconv.FormatInt(n, 2)) // 1111011

    DEMO: http://play.golang.org/p/leGVAELMhv

    http://golang.org/pkg/strconv/#FormatInt

    func FormatInt(i int64, base int) string

    FormatInt returns the string representation of i in the given base, for 2 <= base <= 36. The result uses the lower-case letters 'a' to 'z' for digit values >= 10.