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// If you return a value from the `initialize()` method, that value | |
// is returned when you instantiate the class using `new`. | |
// Here, we use this to make `singleton` a class that generates | |
// new classes. The singleton instance is protected by a closure. | |
JS.singleton = new JS.Class({ | |
initialize: function(name, parent, methods) { | |
var instance = null; | |
return new JS.Class(name, parent, { |
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-- | The 'partition' function splits a list into sublists of length n. | |
partition :: Int -> [a] -> [[a]] | |
partition n xs = unfoldr step xs | |
where step :: [a] -> Maybe ([a], [a]) | |
step [] = Nothing | |
step ys = Just (take n ys, drop n ys) |
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var requestPromise; | |
function getCurrentState() { | |
if (requestPromise) return requestPromise; | |
requestPromise = ajaxRequestReturningPromise('GET', '/state.json'); | |
reqrequestPromise.then(function() { requestPromise = null }); | |
return requestPromise; | |
} | |
promise1 = getCurrentState() |