Converting from an integer to its binary representation

Issue

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.

Answered By – I Hate Lazy

Answer Checked By – Candace Johnson (GoLangFix Volunteer)

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