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  • How do I execute a page-defined JavaScript function from a Firefox extension?

    - by yuku
    Hi, I'm creating a Firefox extension for demo purposes. I to call a specific JavaScript function in the document from the extension. I wrote this in my HTML document (not inside extension, but a page that is loaded by Firefox): document.funcToBeCalled = function() { // function body }; Then, the extension will run this on some event: var document = Application.activeWindow.activeTab.document; document.funcToBeCalled(); However it raises an error saying that funcToBeCalled is not defined. Note: I could get an element on the document by calling document.getElementById(id);

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  • Simple solution now to a problem from 8 years ago. Use SQL windowing function

    - by Kevin Shyr
    Originally posted on: http://geekswithblogs.net/LifeLongTechie/archive/2014/06/10/simple-solution-now-to-a-problem-from-8-years-ago.aspxI remember having this problem 8 years ago. We had to find the top 5 donor per month and send out some awards. The SQL we came up with was clunky and had lots of limitation (can only do one year at a time), then switch the where clause and go again. Fast forward 8 years, I got a similar problem where we had to find the top 3 combination of 2 fields for every single day. And the solution is this elegant: SELECT CAST(eff_dt AS DATE) AS "RecordDate" , status_cd , nbr , COUNT(*) AS occurance , ROW_NUMBER() OVER (PARTITION BY CAST(eff_dt AS DATE) ORDER BY COUNT(*) DESC) RowNum FROM table1 WHERE RowNum < 4 GROUP BY CAST(eff_dt AS DATE) , status_cd , nbr If only I had this 8 years ago. :) Life is good now!

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  • How to calculate Sin function quicker and more precisely?

    - by user1297181
    I want to calculate y(n)=32677Sin(45/1024•n), where y is an integer and n ranges from 0 to 2048. How can I make this process quicker and more precisely? Now I want to show you a reference answer: Since Sin(a+b)=Sin(a)Cos(b)+Cos(a)Sin(b) And Cos(a+b)=Cos(a)Cos(b)-Sin(a)Cos(b). So I can store Sin(45/1024•1) andCos(45/1024•1) ` only.Then use this formula: Sin(45/1024•2)=Sin(45/1024•1+45/1024•1), Cos(45/1024•2)=Cos(45/1024•1+45/1024•1), .... `Sin(45/1024•n)=Sin(45/1024•(n-1)+45/1024•1) `, `Cos(45/1024•n)=Cos(45/1024•(n-1)+45/1024•1) `, This way maybe quicker without storing large array.

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  • How to access a structure member in a function that get it as void* type?

    - by Ahmad
    I want to have a function that accepts different type of structures as argument. So, since I don't have a specific type, I have to use void*. Now question is: when I pass a structure to this function, how can I access a known member of this structure inside the function? Specifically, I know that all structures have str1 as a member and I want, for example, print it. Here is a sample code: struct { char* str1; float tt1; } var1 = {"This is me", 12}; struct { char* str1; int tt2; } var2 = {"This is you", 18}; void printStruct(void* str) { printf("\n the structure string is %s", ??); //can I put something in ?? to print the string? } main(....) { printStruct(&var1); printStruct(&var2); }

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  • Google Visualization API Geomap: How to handle marker click events?

    - by Carlos da Costa
    Hello. I initially have the Google Visualization API Geomap on a world view (options['dataMode'] = 'regions') and I capture the 'regionClick' event when a country is clicked like so: google.visualization.events.addListener( geomap, 'regionClick', function (e) { var rowindex = data.getFilteredRows([{column: 0, value: e['region']}]); var location = data.getValue(rowindex[0], 3); location.href = "?ISO=" + e['region'] + "&Location=" + location; }); I then draw the map zoomed into the country in markers mode (options['dataMode'] = 'markers'). However, I can't seem to capture any events when the markers themselves are clicked. The documentation ( http://code.google.com/apis/visualization/documentation/gallery/geomap.html#Events ) only refers to 'select' and 'regionClick' events neither of which are fired in this case. (Tested using Chrome 9, and IE 8.) Has anybody had any success in doing this? Many thanks.

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  • How to handle right to left languages in Flash (pre version 10)?

    - by Maan Ashgar
    Hello, We are currently working with Flex creating a web application. We are having trouble taking Arabic text from the user and displaying correctly (like in a chat feature). While presumably Flash 10 will solve this problem, we don't want to force our users to upgrade. Flash flips the order of the sentence's words. so if I wrote something like "Hello World" in the text field, it will appear as "World Hello" in the chat area. Is there a standard way to work with Right to Left languages in Flash? *We currently flip the order of the words with a function, but it things get messed up when using English or special characters in the chat like :) or :D *

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  • Remote Ajax Call in jQuery .click() function doesn't finish before going to next page.

    - by Clint
    I need to send click information on my website to a third party server using ajax (json). I am using jquery and I added the click event to certain links. In the click event I am making a json request to a remote server with the location of the click (heat map) and some other information. The problem is that the ajax function doesn't fire in time before the default link action happens. Setting async to false doesn't seem to work on remote ajax calls. I have tried preventDefault(), but then I don't know how to run the default action after the successful ajax call. Here is what I want to do: $('a').click(submit_click); function submit_click(e,fireAjax){ e.preventDefault(); cd_$.ajax({ url: jsonUrl, //remote server dataType: 'json', data: jsonData, async: false, success: function(reply){ //Run the default action here if I have to disable the default action }, }); } Any suggestions?

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  • How to remove multiple instances and just have one instance while multiple function calls in php ?

    - by Rachel
    public function getHelperInstance() { $user = new Helper(); $user->set($result['data']); return $user; } I am calling getHelper() class multiple times and if $user is not empty than am calling getHelperInstance(), now in my case getHelperInstance() always creates a new instance of Helper() class and so every time I call getHelperInstance() function am creating a new instance of Helper() so is there any way where can I can just create one instance of Helper() and use it multiple times instead of creating a new instance everytime. Any suggestions !!! public function getHelper() { $user = array(); if (!empty($user)) { $user = $this->getHelperInstance(); } return $user; }

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  • How can I increase my application memory, till using the VirtualAlloc function, with the WOW64?

    - by fishbein
    I have application that runs on x86 32Win and we use 1.2Gbyte memory which allocated from the function VirtualAlloc(to prevent page faults). I really want to increase my application memory so I recompiled my project under MSDVE 2008 with wow64 (OS Exp 64Bit). I tried to allocate more than 2Gbyte and the function VirtualAlloc return error. I even tried to set the flag LARGEADDRESSWARE to on, and the result was the same! How can I increase my application memory, till using the VirtualAlloc function, with the WOW64?

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  • how can we pass the variable into the function via url?

    - by subodh
    I have designed a asp.net page which create graphs. I have written a class file (which contain a function to render the graph,a function for entering data named insertdata(string[] s,double[] d)) in App_code folder. I pass the value into the insertdata during page load_event. I saw a feature of googlechart.when you pass the value in url address bar it will create a graph according to that passed value. how can i pass the value into the insertdata() function through url address? can anybody help me?

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  • How to expose a function that takes two input files as a REST resource?

    - by dafmetal
    I need to expose a function, let's say compute that takes two input files: a plan file and a system file. The compute function uses to system file to see whether the plan in the plan file can be executed or not. It produces an output file containing the result of this check including recommendations for the plan. I need to expose this functionality in a REST architecture and have no influence on the compute function itself (it is being developed by another organization). I can control the interface through which it is accessed. What would be a recommended way to expose this functionality in a REST architecture?

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  • Javascript: Make a static code, dynamic - List of inputs

    - by BoDiE2003
    I have this code, that checks some ids and enable others, the javascript is pretty clear about what it does, but since it corresponds to some specific id ranges, I cant do just a look until it finishes, but I'm looking a way to do this dynamic and save 40 lines of code (or more), since its not the best way. function loopGroup1() { var a = 0; do { $$('.selectedAuthorities-3_' + a).each(function(chk1) { // watch for clicks chk1.observe('click', function(evt) { dynamicCheckbox1(); }); dynamicCheckbox1(); }); a++; } while (a < 4); } function dynamicCheckbox1() { // count how many of group_first are checked, // doEnable true if any are checked var doEnable = ($$('.selectedAuthorities-3_0:checked').length > 0) ? true : false; var doEnable1 = ($$('.selectedAuthorities-3_1:checked').length > 0) ? true : false; var doEnable2 = ($$('.selectedAuthorities-3_2:checked').length > 0) ? true : false; // for each in group_second, enable the checkbox, and // remove the cssDisabled class from the parent label var i = 0; do { $$('.selectedAuthorities-4_' + i).each(function(item) { if (doEnable || doEnable1 || doEnable2) { item.enable().up('li').removeClassName('cssDisabled'); } else { item.disable().up('li').addClassName('cssDisabled'); } }); i++; } while (i < 4); }; /* * * Loop Group 2 * * */ function loopGroup2() { var a = 0; do { $$('.selectedAuthorities-5_' + a).each(function(chk1) { // watch for clicks chk1.observe('click', function(evt) { dynamicCheckbox2(); }); dynamicCheckbox2(); }); a++; } while (a < 4); } function dynamicCheckbox2() { // count how many of group_first are checked, // doEnable true if any are checked var doEnable3 = ($$('.selectedAuthorities-5_0:checked').length > 0) ? true : false; // for each in group_second, enable the checkbox, and // remove the cssDisabled class from the parent label var i = 0; do { $$('.selectedAuthorities-6_' + i).each(function(item) { if (doEnable3) { item.enable().up('li').removeClassName('cssDisabled'); } else { item.disable().up('li').addClassName('cssDisabled'); } }); i++; } while (i < 4); }; /* * * Loop Group 3 * * */ function loopGroup3() { var a = 0; do { $$('.selectedAuthorities-6_' + a).each(function(chk1) { // watch for clicks chk1.observe('click', function(evt) { dynamicCheckbox3(); }); dynamicCheckbox3(); }); a++; } while (a < 4); } function dynamicCheckbox3() { // count how many of group_first are checked, // doEnable true if any are checked var doEnable4 = ($$('.selectedAuthorities-6_0:checked').length > 0) ? true : false; var doEnable5 = ($$('.selectedAuthorities-6_1:checked').length > 0) ? true : false; // for each in group_second, enable the checkbox, and // remove the cssDisabled class from the parent label var i = 0; do { $$('.selectedAuthorities-7_' + i).each(function(item) { if (doEnable4 || doEnable5) { item.enable().up('li').removeClassName('cssDisabled'); } else { item.disable().up('li').addClassName('cssDisabled'); } }); i++; } while (i < 4); }; /* * * Loop Group 4 * * */ function loopGroup4() { var a = 0; do { $$('.selectedAuthorities-9_' + a).each(function(chk1) { // watch for clicks chk1.observe('click', function(evt) { dynamicCheckbox4(); }); dynamicCheckbox4(); }); a++; } while (a < 4); } function dynamicCheckbox4() { // count how many of group_first are checked, // doEnable true if any are checked var doEnable6 = ($$('.selectedAuthorities-9_0:checked').length > 0) ? true : false; var doEnable7 = ($$('.selectedAuthorities-9_1:checked').length > 0) ? true : false; // for each in group_second, enable the checkbox, and // remove the cssDisabled class from the parent label var i = 0; do { $$('.selectedAuthorities-10_' + i).each(function(item) { if (doEnable6 || doEnable7) { item.enable().up('li').removeClassName('cssDisabled'); } else { item.disable().up('li').addClassName('cssDisabled'); } }); i++; } while (i < 4); };

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  • Is it possible to create an efficient UDF alternative to Excel's CUBEVALUE function?

    - by bright
    We'd like to create a simpler alternative to Excel's CUBEVALUE function for retrieving data from an OLAP server. The details aren't critical, but briefly, our function will "know" the source connection and accept a very simple ticker-like parameter and a date, in place of CUBEVALUE's MDX-style parameters. This is for internal use within our firm, just FYI. However, Excel has optimized CUBEVALUE so that calls to the OLAP server are batched. Question: Is there a way to code the new function so that it can similarly batch calls rather than issue a separate query for each cell?

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  • How can I pass a javaScript function to a Java Method to act as a callback (Rhino)

    - by Dan Howard
    Hi everyone, Basically I'm trying to pass a javaScript function to a Java method to act as a callback to the script. I can do it - sort of - but the object I receive is a sun.org.mozilla.javascript.internal.InterpretedFunction and I don't see a way to invoke it. Any ideas? Here's what I have so far: var someNumber = 0; function start() { // log is just an log4j instance added to the Bindings log.info("started...."); someNumber = 20; // Test is a unit test object with this method on it (taking Object as a param). test.callFromRhino(junk); } function junk() { log.info("called back " + someNumber); }

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  • VBA: How to trigger a worksheet event function by an automatic cell change trough a link?

    - by Jesse
    Hi, My problem is the following: The function below triggers an "if then function" when i manually change the value in cell D9. What should I do to get it to work with an automatic value change of cell D9 trough a link. In other words if i where to link cell D9 to cell A1 and change the value of A1 can i still make the function below work? Thanks in advance Private Sub Worksheet_Change(ByVal Target As range) If Target.Address = "$D$9" Then If range("C12") = 0 Then Rows("12:12").Select Selection.RowHeight = 0 Else: Rows("12:12").Select Selection.RowHeight = 15 End If End Sub

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  • Can I use a MySQL PREPARE statement in a function to create a query with a variable table name

    - by aHunter
    I want to create a function that has a select query inside that can be used against multiple database tables but I can not use a variable as the table name. Can I get around this using a PREPARE statement in the function? An Example: FUNCTION `TESTFUNC`(dbTable VARCHAR(25)) RETURNS bigint(20) BEGIN DECLARE datereg DATETIME; DECLARE stmt VARCHAR(255); SET stmt := concat( 'SELECT dateT FROM', dbTable, 'ORDER BY dateT DESC LIMIT 1'); PREPARE stmt FROM @stmt; EXECUTE stmt; RETURN dateT; END $$ Thanks in advance for any input.

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  • any equivalent to VB.net function name as return value in C#?

    - by user1179861
    In vb.net there is a weird approach that you can use the function name as the result variable.. example: Function Foo(ByVal bar As Integer) As List(Of Integer) Foo = New List(Of Integer) Foo.Add(bar + 1) End Function As far as i know, in C# you have to: List<int> foo(int bar) { var result = new List<int>(); result.Add(bar + 1); return result; } I'm not sure if it's by design or i just don't know the right way to do this.. Please enlight me! Thanks in advance, Eitan.

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  • Is a function kind of like a static method?

    - by lkm
    I'm a java programmer and am trying to understand the difference between a method (java methods) and a function (such as in c++). I used to think that they are the same, just different naming conventions for different programming languages. But now that I know they are not, I am having trouble understanding the difference. I know that a method relates to an instance of a class and has access to class data (member variables), while a function does not (?). So is a function kind of like a static method? See here for explanations I read which led me to think this.

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  • How to override JS function from a firefox extension?

    - by BruceBerry
    Hello, I am trying to intercept calls to document.write for all pages. Setting up the interception inside the page by injecting a script like function overrideDocWrite() { alert("Override called"); document.write = function(w) { return function(s) { alert("special dom"); w.call(this, wrapString(s)); }; }(document.write); alert("Override finished"); } is easy and works, but i would like my extension to setup the interception for each document object from inside the extension. I couldn't find a way to do this. I tried to listen for the "load" event and set up the interception there but it also fails. How do I hook calls to doc.write from an extension?

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  • C++ -- How can we call "delete this; " in a const-member function?

    - by q0987
    Hello all, I saw the code snippet as follows: class UPNumber { public: UPNumber(); UPNumber(int initValue); ... // pseudo-destructor (a const member function, because // even const objects may be destroyed) void destroy() const { delete this; } // why this line is correct??? ... private: ~UPNumber(); }; First, I am sure that above class definition is correct. Here is my question, why we can define the function 'destroy' as above? The reason being asking is that why we can modify 'this' in a const-member function? Thank you

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  • What is the ISO C++ way to directly define a conversion function to reference to array?

    - by ben
    According to the standard, a conversion function has a function-id operator conversion-type-id, which would look like, say, operator char(&)[4] I believe. But I cannot figure out where to put the function parameter list. gcc does not accept either of operator char(&())[4] or operator char(&)[4]() or anything I can think of. Now, gcc seems to accept (&operator char ())[4] but clang does not, and I am inclined to not either, since it does not seem to fit the grammar as I understand it. I do not want to use a typedef because I want to avoid polluting the namespace with it.

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  • Why do most programming languages only support returning a single value from a function?

    - by M4N
    Is there a reason or an explanation why functions in most(?) programming languages are designed to support any number of input parameters but only one return value? In most languages, it is possible to "work around" that limitation, e.g. by using out-parameters, returning pointers or by defining/returning structs/classes. But it seems strange, that programming languages were not designed to support multiple return values in a more "natural" way.

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  • Javascript 'class' and singleton problems

    - by Kucebe
    I have a singleton object that use another object (not singleton), to require some info to server: var singleton = (function(){ /*_private properties*/ var myRequestManager = new RequestManager(params, //callbacks function(){ previewRender(response); }, function(){ previewError(); } ); /*_public methods*/ return{ /*make a request*/ previewRequest: function(request){ myRequestManager.require(request); //err:myRequestManager.require is not a func }, previewRender: function(response){ //do something }, previewError: function(){ //manage error } }; }()); This is the 'class' that make the request to the server function RequestManager(params, success, error){ //create an ajax manager this.param = params; this._success = success; //callbacks this._error = error; } RequestManager.prototype = { require: function(text){ //make an ajax request }, otherFunc: function(){ //do other things } } The problem is that i can't call myRequestManager.require from inside singleton object. Firebug consolle says: "myRequestManager.require is not a function", but i don't understand where the problem is. Is there a better solution for implement this situation?

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  • What's a good way to throw and handle events in PHP?

    - by techexpert
    Hi everyone, I am just trying to get a general idea about the event prcessing mechanism in PHP5 in as neat way as possible. First of all I understand that a PHP application is not exactly a persistent type, so the events may not make a lot of sense, but from the OO perspective it might be a very elegant way to "communicate" between the objects. So I am thinking that it would make sense to separate the events on the external events, such as $_POST & $_GET and the internal ones, i.e. function callbacks. As far as the external ones, is it a good idea to process the $_GETs and $_POSTs directly, or is it better to wrap them into an event of some sort? Also, in order to process the internal events, do you have to pass the reference to the event handler/dispatcher to each class so they know how to throw them? I was thinking to use the PEAR EventDispatcher to do the work, but I am open to other suggestions. Thank you!

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  • How to see variable in calling function in visual studio?

    - by carter-boater
    Hi all, Does anyone know how to watch a variable in calling function. For example: C#: void fn a() { int myVar=9; b(); } b() { Throw new Exception(); } How can I watch myVar when I get the exception in function b?? I have a really big recursive function with in a loop and get an exception in one iteration. I don't know which iteration it belongs to$%^&*(. The thing I did was to promote my intersted variable to global so I can watch them anywhere. However, I don't think that's a good idea only for debug. Thanks everyone!

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