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<title>CodeMirror: LiveScript mode</title><meta charset="utf-8"/><link rel=stylesheet href="../../doc/docs.css">
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<ul> <li><a href="../../index.html">Home</a> <li><a href="../../doc/manual.html">Manual</a> <li><a href="https://github.com/codemirror/codemirror5">Code</a> </ul> <ul> <li><a href="../index.html">Language modes</a> <li><a class=active href="#">LiveScript</a> </ul></div>
<article><h2>LiveScript mode</h2><form><textarea id="code" name="code"># 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 thingsexport 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)
# metaexport installPrelude = !(target) -> unless target.prelude?isInstalled target <<< out$ # using out$ generated by livescript target <<< target.prelude.isInstalled = true
export prelude = out$</textarea></form> <script> var editor = CodeMirror.fromTextArea(document.getElementById("code"), { theme: "solarized light", lineNumbers: true }); </script>
<p><strong>MIME types defined:</strong> <code>text/x-livescript</code>.</p>
<p>The LiveScript mode was written by Kenneth Bentley.</p>
</article>
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