Binary digits: Difference between revisions

The simplest showBin (or showIntAtBase), using default digit characters, would use JavaScript's standard String.toString(base):

// showIntAtBase_ :: // Int -> Int -> String

const showIntAtBase_ = (base, n) => (n)

.toString(base);

// showBin :: Int -> String

const showBin = n => showIntAtBase_(2, n);

// GENERIC FUNCTIONS FOR TEST ---------------------------------------------

// intercalate :: String -> [a] -> String

const intercalate = (s, xs) => xs.join(s);

// map :: (a -> b) -> [a] -> [b]

const map = (f, xs) => xs.map(f);

// unlines :: [String] -> String

const unlines = xs => xs.join('\n');

// show :: a -> String

const show = x => JSON.stringify(x);

// TEST -------------------------------------------------------------------

return unlines(map(

n => intercalate(' -> ', [show(n), showBin(n)]),

[5, 50, 9000]

));