LiveScript mode # LiveScript mode for CodeMirror # The following script, prelude.ls, is used to # demonstrate LiveScript mode for CodeMirror. # https://github.com/gkz/prelude-ls export objToFunc = objToFunc = (obj) -> (key) -> obj[key] export each = (f, xs) --> if typeof! xs is \Object for , x of xs then f x else for x in xs then f x xs export map = (f, xs) --> f = objToFunc f if typeof! f isnt \Function type = typeof! xs if type is \Object {[key, f x] for key, x of xs} else result = [f x for x in xs] if type is \String then result * '' else result export filter = (f, xs) --> f = objToFunc f if typeof! f isnt \Function type = typeof! xs if type is \Object {[key, x] for key, x of xs when f x} else result = [x for x in xs when f x] if type is \String then result * '' else result export reject = (f, xs) --> f = objToFunc f if typeof! f isnt \Function type = typeof! xs if type is \Object {[key, x] for key, x of xs when not f x} else result = [x for x in xs when not f x] if type is \String then result * '' else result export partition = (f, xs) --> f = objToFunc f if typeof! f isnt \Function type = typeof! xs if type is \Object passed = {} failed = {} for key, x of xs (if f x then passed else failed)[key] = x else passed = [] failed = [] for x in xs (if f x then passed else failed)push x if type is \String passed *= '' failed *= '' [passed, failed] export find = (f, xs) --> f = objToFunc f if typeof! f isnt \Function if typeof! xs is \Object for , x of xs when f x then return x else for x in xs when f x then return x void export head = export first = (xs) -> return void if not xs.length xs.0 export tail = (xs) -> return void if not xs.length xs.slice 1 export last = (xs) -> return void if not xs.length xs[*-1] export initial = (xs) -> return void if not xs.length xs.slice 0 xs.length - 1 export empty = (xs) -> if typeof! xs is \Object for x of xs then return false return yes not xs.length export values = (obj) -> [x for , x of obj] export keys = (obj) -> [x for x of obj] export len = (xs) -> xs = values xs if typeof! xs is \Object xs.length export cons = (x, xs) --> if typeof! xs is \String then x + xs else [x] ++ xs export append = (xs, ys) --> if typeof! ys is \String then xs + ys else xs ++ ys export join = (sep, xs) --> xs = values xs if typeof! xs is \Object xs.join sep export reverse = (xs) -> if typeof! xs is \String then (xs / '')reverse! * '' else xs.slice!reverse! export fold = export foldl = (f, memo, xs) --> if typeof! xs is \Object for , x of xs then memo = f memo, x else for x in xs then memo = f memo, x memo export fold1 = export foldl1 = (f, xs) --> fold f, xs.0, xs.slice 1 export foldr = (f, memo, xs) --> fold f, memo, xs.slice!reverse! export foldr1 = (f, xs) --> xs.=slice!reverse! fold f, xs.0, xs.slice 1 export unfoldr = export unfold = (f, b) --> if (f b)? [that.0] ++ unfoldr f, that.1 else [] export andList = (xs) -> for x in xs when not x return false true export orList = (xs) -> for x in xs when x return true false export any = (f, xs) --> f = objToFunc f if typeof! f isnt \Function for x in xs when f x return yes no export all = (f, xs) --> f = objToFunc f if typeof! f isnt \Function for x in xs when not f x return no yes export unique = (xs) -> result = [] if typeof! xs is \Object for , x of xs when x not in result then result.push x else for x in xs when x not in result then result.push x if typeof! xs is \String then result * '' else result export sort = (xs) -> xs.concat!sort (x, y) -> | x > y => 1 | x < y=> -1 | _ => 0 export sortBy = (f, xs) --> return [] unless xs.length xs.concat!sort f export compare = (f, x, y) --> | (f x) > (f y) => 1 | (f x) < (f y)=> -1 | otherwise => 0 export sum = (xs) -> result = 0 if typeof! xs is \Object for , x of xs then result += x else for x in xs then result += x result export product = (xs) -> result = 1 if typeof! xs is \Object for , x of xs then result *= x else for x in xs then result *= x result export mean = export average = (xs) -> (sum xs) / len xs export concat = (xss) -> fold append, [], xss export concatMap = (f, xs) --> fold ((memo, x) -> append memo, f x), [], xs export listToObj = (xs) -> {[x.0, x.1] for x in xs} export maximum = (xs) -> fold1 (>?), xs export minimum = (xs) -> fold1 ( <?), xs export scan = export scanl = (f, memo, xs) --> last = memo if typeof! xs is \Object then [memo] ++ [last = f last, x for , x of xs] else [memo] ++ [last = f last, x for x in xs] export scan1 = export scanl1 = (f, xs) --> scan f, xs.0, xs.slice 1 export scanr = (f, memo, xs) --> xs.=slice!reverse! scan f, memo, xs .reverse! export scanr1 = (f, xs) --> xs.=slice!reverse! scan f, xs.0, xs.slice 1 .reverse! export replicate = (n, x) --> result = [] i = 0 while i < n, ++i then result.push x result export take = (n, xs) --> | n <= 0 if typeof! xs is \String then '' else [] | not xs.length => xs | otherwise => xs.slice 0, n export drop = (n, xs) --> | n <= 0 => xs | not xs.length => xs | otherwise => xs.slice n export splitAt = (n, xs) --> [(take n, xs), (drop n, xs)] export takeWhile = (p, xs) --> return xs if not xs.length p = objToFunc p if typeof! p isnt \Function result = [] for x in xs break if not p x result.push x if typeof! xs is \String then result * '' else result export dropWhile = (p, xs) --> return xs if not xs.length p = objToFunc p if typeof! p isnt \Function i = 0 for x in xs break if not p x ++i drop i, xs export span = (p, xs) --> [(takeWhile p, xs), (dropWhile p, xs)] export breakIt = (p, xs) --> span (not) << p, xs export zip = (xs, ys) --> result = [] for zs, i in [xs, ys] for z, j in zs result.push [] if i is 0 result[j]?push z result export zipWith = (f,xs, ys) --> f = objToFunc f if typeof! f isnt \Function if not xs.length or not ys.length [] else [f.apply this, zs for zs in zip.call this, xs, ys] export zipAll = (...xss) -> result = [] for xs, i in xss for x, j in xs result.push [] if i is 0 result[j]?push x result export zipAllWith = (f, ...xss) -> f = objToFunc f if typeof! f isnt \Function if not xss.0.length or not xss.1.length [] else [f.apply this, xs for xs in zipAll.apply this, xss] export compose = (...funcs) -> -> args = arguments for f in funcs args = [f.apply this, args] args.0 export curry = (f) -> curry$ f # using util method curry$ from livescript export id = (x) -> x export flip = (f, x, y) --> f y, x export fix = (f) -> ( (g, x) -> -> f(g g) ...arguments ) do (g, x) -> -> f(g g) ...arguments export lines = (str) -> return [] if not str.length str / \\n export unlines = (strs) -> strs * \\n export words = (str) -> return [] if not str.length str / /[ ]+/ export unwords = (strs) -> strs * ' ' export max = (>?) export min = (<?) export negate = (x) -> -x export abs = Math.abs export signum = (x) -> | x < 0 => -1 | x > 0 => 1 | otherwise => 0 export quot = (x, y) --> ~~(x / y) export rem = (%) export div = (x, y) --> Math.floor x / y export mod = (%%) export recip = (1 /) export pi = Math.PI export tau = pi * 2 export exp = Math.exp export sqrt = Math.sqrt # changed from log as log is a # common function for logging things export ln = Math.log export pow = (^) export sin = Math.sin export tan = Math.tan export cos = Math.cos export asin = Math.asin export acos = Math.acos export atan = Math.atan export atan2 = (x, y) --> Math.atan2 x, y # sinh # tanh # cosh # asinh # atanh # acosh export truncate = (x) -> ~~x export round = Math.round export ceiling = Math.ceil export floor = Math.floor export isItNaN = (x) -> x isnt x export even = (x) -> x % 2 == 0 export odd = (x) -> x % 2 != 0 export gcd = (x, y) --> x = Math.abs x y = Math.abs y until y is 0 z = x % y x = y y = z x export lcm = (x, y) --> Math.abs Math.floor (x / (gcd x, y) * y) # meta export installPrelude = !(target) -> unless target.prelude?isInstalled target <<< out$ # using out$ generated by livescript target <<< target.prelude.isInstalled = true export prelude = out$ MIME types defined: text/x-livescript. The LiveScript mode was written by Kenneth Bentley.
