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Search found 37844 results on 1514 pages for 'function composition'.

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  • referencing desired objects in namespaced functions

    - by RyOnLife
    I'm having trouble referencing the desired object when I've namespaced functions. No problems here: obj.test = function() { // this == obj } But I'm getting tripped up when I namespace: obj.namespace.test = function() { // this == namespace } In the latter example, I know this references namespace, but I want to reference obj. How can I do it?

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  • Java reference storage question

    - by aab
    In java, when you pass an object to a method as a parameter, it is actually passing a reference, or a pointer, to that object because objects in Java are references. Inside the function, it has a pointer to that object which is a location in memory. I am wondering where this pointer lives in memory? Is a new memory location created once inside the function to hold this reference?

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  • Symfony: trying to retrieve a variable saved using sfContext::getInstance()

    - by user248959
    Hi, i have these methods in module1/actions/actions.class.php: public function executeMethod1(sfWebRequest $request){ $a = 10; sfContext::getInstance()->set('a', $a); return $this->redirect('module1/method2'); } public function executeMethod2(sfWebRequest $request){ echo sfContext::getInstance()->get('a'); } When i execute module1/method1 i get this error: "The "a" object does not exist in the current context." Any idea? Javi

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  • Are there any "gotchas" to watch for in using a Class (object) within itself?

    - by Clay Nichols
    I've got a Registry class and there are a few Registry values that I want to access from within that Registry class. (There is a bit of a calculation with these values so I thought I'd just put all that code right in the Registry Class itself). So we might have something within our RegistryRoutine.cls like: Function GetMyValue() as integer Dim R as new RegistryRoutine <calculations> GetMyValue=R.GetRegisetryValue (HKEY, key, value, etc.) End Function

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  • Fields in CakePHP could not be referred by JQuery

    - by kwokwai
    Hi all, I have got a simple HTMl form with one field as follows: <input type="text" name="data['User']['user_id']" id="data['User']['user_id']" value="1"> $(document).ready(function(){ $("#data['User']['user_id']").mouseover(function(){ alert("hello"); }); }); The code couldn't work, I think it may be the name of the Input text field that caused the problem, but I don't know how to alter it because this is the naming convention in CakePHP.

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  • fadeIn on page load

    - by Brad
    I want to fade in a background of an entry within a div - this is to show the user what the most recent entry is on page load. I want it to do it on page load, without having to click or hover or anything, just when the page loads. I have this: $(document).ready(function() { $('#box').fadeIn(5000, function() { // Animation complete }); }); Is it something like pageLoad? Any help is appreciated.

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  • Which is easiest solution for hover images

    - by Mirage
    I am looking for some easy jquery solution for hover images. Like if i define a class. them jquery should get the current image like abc.png then chnage that to abc_on.png and then put that to on hover image How can i do that. i don't want to add function for every button. Just one function and it do all. My Images all usually imagename.png or imagename_on.png

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  • Default parameters in ActionScript 3.0

    - by camusgroup
    I have a function, for example function test(p1:int=7,p2:Boolean=true,p3:uint=0xffff00,p4:Number=55.5) { //instructions } How to change only p4, for example, and parameters p1,p3,p3 was still default? Next time I want to change for example only p2, and parameters p1,p3,p4 was still default? etc.

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  • redirect wont work in Chrome

    - by Camran
    I have a form on my website. When this form is filled out, it is then validated by a javascript validation function. At the bottom of this function I have this piece of code: window.location="../index.html"; This wont work on Chrome, but does work in Firefox. My Q is, how can I make this simple redirect work on all (most) browsers? Thanks

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  • Using type passed as a template in C++

    - by MeDiCS
    Is it possible to actually use the type passed as a template for control flow? I'd like to write a function that uses templates, which in turn calls another function based on the type passed: template <class T> void test_function (T var) { //Do stuff if (T == char) { bar (var); } else { foo (var); } //Do even more stuff } If not, I'll have to fallback to enums...

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  • fgets equilvilant in C++

    - by mitchell
    what is the C++ equivilant to the c function fgets? I have looked at getline from ifstream, but when it comes to a end of line character, '\n', it terminates at and discards it, I am looking for a function that just terminates at the end line character but adds the end of line character to the char array. thanks in advance

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  • How to see if type is instance of a class in Haskell?

    - by Raekye
    I'm probably doing this completely wrong (the unhaskell way); I'm just learning so please let me know if there's a better way to approach this. Context: I'm writing a bunch of tree structures. I want to reuse my prettyprint function for binary trees. Not all trees can use the generic Node/Branch data type though; different trees need different extra data. So to reuse the prettyprint function I thought of creating a class different trees would be instances of: class GenericBinaryTree a where is_leaf :: a -> Bool left :: a -> a node :: a -> b right :: a -> a This way they only have to implement methods to retrieve the left, right, and current node value, and prettyprint doesn't need to know about the internal structure. Then I get down to here: prettyprint_helper :: GenericBinaryTree a => a -> [String] prettyprint_helper tree | is_leaf tree = [] | otherwise = ("{" ++ (show (node tree)) ++ "}") : (prettyprint_subtree (left tree) (right tree)) where prettyprint_subtree left right = ((pad "+- " "| ") (prettyprint_helper right)) ++ ((pad "`- " " ") (prettyprint_helper left)) pad first rest = zipWith (++) (first : repeat rest) And I get the Ambiguous type variable 'a0' in the constraint: (Show a0) arising from a use of 'show' error for (show (node tree)) Here's an example of the most basic tree data type and instance definition (my other trees have other fields but they're irrelevant to the generic prettyprint function) data Tree a = Branch (Tree a) a (Tree a) | Leaf instance GenericBinaryTree (Tree a) where is_leaf Leaf = True is_leaf _ = False left (Branch left node right) = left right (Branch left node right) = right node (Branch left node right) = node I could have defined node :: a -> [String] and deal with the stringification in each instance/type of tree, but this feels neater. In terms of prettyprint, I only need a string representation, but if I add other generic binary tree functions later I may want the actual values. So how can I write this to work whether the node value is an instance of Show or not? Or what other way should I be approaching this problem? In an object oriented language I could easily check whether a class implements something, or if an object has a method. I can't use something like prettyprint :: Show a => a -> String Because it's not the tree that needs to be showable, it's the value inside the tree (returned by function node) that needs to be showable. I also tried changing node to Show b => a -> b without luck (and a bunch of other type class/preconditions/whatever/I don't even know what I'm doing anymore).

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  • I want to check if $('#td1').text() === "x"?

    - by M.z
    I want to check if innerHtml have X or O , so i can not add again any thing else , but it's not working . it stop after adding the check code , I'm trying here to do a simple X O game to get more familiar with javascript and jquery . also I'm not sure if can do this with jQuery . <script type="text/javascript" > function ranFun() { return Math.floor((Math.random() * 9) + 1); } var a; function Elment(a) { document.getElementById("td" + a).innerHTML = "O"; } function call() { var x = ranFun(); switch (x) { case 1:case 2 :case 3: case 4 :case 5 : case 6 : case 7 : case 8 : case 9 : Elment(x); break; default: break; } } function tdElm(c) { if ($('#td1').text() === "x" || $('#td1').text() == "o") return false; else { document.getElementById("td" + c).innerHTML = "x"; call(); } } </script> <BODY> <center> <h1 >" X ,O Game "</h1> <table > <tr> <td id="td1" onclick="tdElm(1);" ></td> <td id="td2" onclick="tdElm(2);"></td> <td id="td3" onclick="tdElm(3);"></td> </tr> <tr> <td id="td4" onclick="tdElm(4);"></td> <td id="td5" onclick="tdElm(5);"></td> <td id="td6" onclick="tdElm(6);"></td> </tr> <tr> <td id="td7" onclick="tdElm(7);"></td> <td id="td8" onclick="tdElm(8);"></td> <td id="td9" onclick="tdElm(9);"></td> </tr> </table> </center> </BODY>

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  • jQuery CSS and .hover() not picking up style

    - by danit
    Im using jQuery to add .hover class to list items. $("#list .item").hover( function () { $(this).addClass("hover"); }, function () { $(this).removeClass("hover"); } ); Then followed by the style in jQuery (I have to supply the style in JS) $('#list .item.hover').css('padding-left', '20px'); The hover class is being applied but the style is not picked up?

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  • How To Get YEARWEEK() To See Sunday As The Start Of The Week?

    - by tan
    I'm trying to get the YEARWEEK function to see Sunday as the 1st day of the week. An example date is: Sunday 1st Mar 2009 Here is my sql SELECT YEARWEEK('2009-03-01') and the result is - 200909 Which is week 9. I believe it is telling me this is week 9 because it sees the sunday as the last day of the previous week. How would I get this function to see sunday as the 1st day of the week and therefore return as week 10?

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  • C/C++ variable length automatic array performance

    - by aaa
    hello. Is there significant cpu/memory overhead associated with using automatic arrays with g++/Intel on 64-bit x86 linux platform? int function(int N) { double array[N]; overhead compared to allocating array before hand (assuming function is called multiple times) overhead compared to using new overhead compared to using malloc range of N maybe from 1kb to 16kb roughly, stack overrun is not a problem Thank you

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  • Python | How to append elements to a list randomly

    - by MMRUser
    Is there a way to append elements to a list randomly, built in function ex: def random_append(): lst = ['a'] lst.append('b') lst.append('c') lst.append('d') lst.append('e') return print lst this will out put ['a', 'b', 'c', 'd', 'e'] But I want it to add elements randomly and out put something like this: ['b', 'd', 'b', 'e', 'c'] And yes there's a function random.shuffle() but it shuffles a list at once which I don't require, I just want to perform random inserts only.

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  • how i can do this in c#

    - by Ian Moss
    I want to make a framework who the style of function calling is different from the c# style like the instance create like Documment doc= new Document("required param is here"); doc("otherinfo").Dothis(); dothis function calling on the basis of information who user passed when they create a new instance and otherinfo they passed latter. well it's something like jQuery. like $("#goo").length are this possible to do this in c#

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  • Is there a good Python library that can parse C++?

    - by csbrooks
    Google didn't turn up anything that seemed relevant. I have a bunch of existing, working C++ code, and I'd like to use python to crawl through it and figure out relationships between classes, etc. EDIT: Just wanted to point out: I don't think I need or want to parse every bit of C++; I just need something smart enough to pick up on class, function and member variable declarations, and to skip over function definitions.

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  • jQuery - add additional parameters on submit (NOT ajax)

    - by Stacey
    Using jQuery's 'submit' - is there a way to pass additional parameters to a form? I am NOT looking to do this with Ajax - this is normal, refresh-typical form submission. $('#submit').click(function () { $('#event').submit(function () { data: { form['attendees'] = $('#attendance').sortable('toArray').toString(); }); });

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  • $.post() in jQuery not working as expected

    - by Bunny Rabbit
    $('a').click(function(event){ $('body').html('loading...'); $.post('www.sitename.com/hello',{site:"http//:www.google.com"},function(data) { alert(data); }); event.preventDefault(); }); I am using the above script to override the default behaviour of the links .The site reffred here returns the html of the 'site' paraeter.but the page just stops after printing loading...

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