anonymous-function

问题 I just want to verify my understanding about the following Delegate - a method signature Lambdas - anonymous function Anonymous Function - just that Action - An anonymous function that returns nothing Func - An anonymous function that returns something hmm... they all do similar things, how do you define & know when to use each? sorry, I don't explain well 回答1: Delegate - it is not a method signature. It is a type which encapsulates a method . Hence a delegate declaration should have a

问题 As also explained in the answers of this question, Clojure determines the number of parameters of an anonymous function (defined through #() ), by the maximal parameter index referenced in the body (e.g. if the maximal referenced parameter is %4 , then that anonymous function has 4 parameters). Question: is there some syntax to tell the Clojure compiler that an anonymous function expects one parameter, even not referencing that parameter? Or, in this case, the only "clean way"* is to use the

问题 I have an issue to access at some variables outside an anonymous function called in another function as parameter. This is the code : clicked(){ var lat; var lng; this.map.on('click',function(e) { var coordonneesDiv = document.getElementById("coordonnees"); lat = e.latlng.lat; lng = e.latlng.lng; //var zoom = 18; coordonneesDiv.innerHTML = "lat : " + lat + "<br/>" + "long : "+ lng; //Zoom lors d'un click // //this.map.setView([lat, lng], zoom); }); this.getData(lat,lng); } Is it possible to

问题 I have an issue to access at some variables outside an anonymous function called in another function as parameter. This is the code : clicked(){ var lat; var lng; this.map.on('click',function(e) { var coordonneesDiv = document.getElementById("coordonnees"); lat = e.latlng.lat; lng = e.latlng.lng; //var zoom = 18; coordonneesDiv.innerHTML = "lat : " + lat + "<br/>" + "long : "+ lng; //Zoom lors d'un click // //this.map.setView([lat, lng], zoom); }); this.getData(lat,lng); } Is it possible to

问题 The following code does not work <input id="inp" type="text" onfocus="(function(){document.getElementById('inp').style.background="yellow";})"> But this code works as I wish it to work <input id="inp" type="text" onfocus="(function(e){document.getElementById('inp').style.background ='yellow';}(this)"> Why doesn't the first code work ? 回答1: The first doesn't work because it is wrapped in parenthesis and therefore it is a function "expression", rather than a function "declaration". Expressions

问题 Here is the javascript code below with a few anonymous inner functions linked to it seems 2 array indexes for each switch, they seem to return some value too, but I have no idea where they are returning to the memoryReadJumpCompile() function or both those array index's. Most likely they are reuturning to the actual array indexes and by the function name Compile it seems that everytime you call any of those array indexes they will re-evaluate the function linked to them with some new result

问题 I have a few anonymous functions inside of a $scope function in my application. These are anonymous because I only ever need them to run one time right when the page loads (which they do). Inside of those anonymous functions I'm setting a $scope.itemSuccess variable to true and return; when certain specifications are met (not important). These anonymous functions also increment a $scope.counter; I'm not sure how to target these anonymous functions inside of a jasmine unit test. I need to make

问题 I know this is the realm of closures and what not. But is it possible to continuously call nested anonymouse funtions? Say I have this: function testing(input) { var testing = 0; (function() { testing = testing + 1; })() return "testing"; } Can we have something like this testing()()()()()()() ? 回答1: You could use an inner function which makes the update and has a toString method to get a primitive value. function testing() { function fn() { string += ++counter; return fn; } var counter = 0,

问题 Is there a good reason to choose between using inline functions vs anonymous functions in MATLAB? This exact question has been asked and answered here, but the answer is not helpful for rookie MATLAB users because the code snippets are incomplete so they do not run when pasted into the MATLAB command window. Can someone please provide an answer with code snippets that can be pasted into MATLAB? 回答1: Anonymous functions replaced inline functions (as mentioned in both the docs and in the link

问题 Hi Is there any way to use anonymous methods in Visual C++ ?? 回答1: Visual C++ 2010 supports C++0x lambda expressions, (1) which can be used as anonymous functions: int i = ([](int x) { return 40 + x; })(2); // i = 42 (1) It's more correct to say that Visual C++ 2010 supports one of the draft specifications for C++0x lambda expressions; several relatively minor changes have been made to that draft specification since Visual C++ 2010 was released. 回答2: As others have stated, C++0x will support