anonymous-function

问题 <script> var sample = function() { (function() { return "something" })(); // how can I return it here again? } </script> Is there a way to return the returned value from the anonymous function in the parent function again or do I need to use a defined function to get the returned value? Thanks! :) 回答1: Just put the return statement at the point where you call the function. <script> var sample = function() { return (function() { // The function returns when you call it return "something" })();

问题 This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center. Closed 7 years ago . I have a two-dimensional array and want to sort it by name. I would like to use usort() with anonymous functions. How should my comparator function look

问题 I am trying to use ParallelCurl with a callback when cURL receives data from the server it is connected to. Here is the code I currently have: function request_finished($content, $url, $ch, $user_data) { echo "Request Finished: ", $content, "\n"; } $pc=new ParallelCurl(); $servers=Server::loadNewAllFromDB(); //Returns an array of 'Server' objects which store connection information foreach ($servers as $server) { $pc->setOptions( array( CURLOPT_USERAGENT=>'My UserAgent String', CURLOPT

问题 I am working with the following example. I wanted to run my code with mu>=0.9 in the last line of the following snippet. alpha,beta,loc,scale = stats.beta.fit(value) error=(scale/(1.96))**2 gpdf = lambda B0, mu, sigma2: 1/np.sqrt(2*pi*sigma2)*np.exp(-1/2*((B0-mu)**2)/sigma2) approx_sigma2 = lambda scale: (scale/(1.96))**2 ggpdf_v = lambda B0, D0, error: gpdf(B0, mu=0.8, sigma2=error) * (D0 < 3) + (D0 >= 3) * gpdf(B0, mu=0.5, sigma2=error) ggpdf_r = lambda B0, D0, error: gpdf(B0, mu=0.5,

问题 Most jQuery code uses anonymous functions, such as: jQuery('someelements').someEvent(function() { // code here }); This works well, but doesn't do so well for debugging. I tried to find the source of some anonymous functions using both Firefox Firebug and Chrome's inspector, with the pause javascript functionality, but the actual code it calls is in the jQuery js file, and stepping through the code never tells what line, or even what .js file added that event. How can I see where the action

问题 I have a set of strings vals , for example: vals = {'AD', 'BC'} I also have a struct info , inside of which are structs nested in fields corresponding to the elements in the array vals (that would be 'AD' and 'BC' in this example), each in turn storing a number in a field named lastcontract . I can use a for loop to extract lastcontract for each of the vals like this: for index = 1:length(vals) info.(vals{index}).lastcontract end I'd like to find a way of doing this without a loop if at all

问题 I have this anonymous function $build_tree within another function that works fine in PHP 5.3 function nest_list($list) { $index = array(); index_nodes($list, $index); $build_tree = function(&$value, $key) use ($index, &$updated) { if(array_key_exists($key, $index)) { $value = $index[$key]; $updated = true; todel($key); } }; do { $updated = false; array_walk_recursive($list, $build_tree); } while($updated); return $list; } function index_nodes($nodes, &$index) { foreach($nodes as $key =>

问题 My understanding is that any event handlers wired up in C# need to be unwired as such. Object myObject = new Object(); myObject.Event += EventHandler; //Wired myObject.Event -= EventHandler; //Unwired But do you need to unwire the following code? and if so, how? Object myObject = new Object(); myObject.Event += (object sender, EventArgs e) => { }; //Wired myObject.Event -= ????? //Unwire? How? My assumption is no? 回答1: Yes, you need to (*) and you need to do it like this: Object myObject =

问题 I have a case where I want to call a method n times, where n is an Int. Is there a good way to do this in a "functional" way in Scala? case class Event(name: String, quantity: Int, value: Option[BigDecimal]) // a list of events val lst = List( Event("supply", 3, Some(new java.math.BigDecimal("39.00"))), Event("sale", 1, None), Event("supply", 1, Some(new java.math.BigDecimal("41.00"))) ) // a mutable queue val queue = new scala.collection.mutable.Queue[BigDecimal] lst.map { event => event

问题 How does stack order work in javascript when using anonymous functions? I would expect the following code to print: "first call second call third call", but instead it prints: "second call third call first call". function findTweets(params, num) { params = { q: params, count: num , language: 'en' } T.get('search/tweets', params, function(err, data, response) { console.log("first call"); }); console.log("second call"); } findTweets("a str",1) console.log("third call"); Any help would be