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  • Call a non member function on an instance before is constructed.

    - by Tom
    Hi everyone. I'm writing a class, and this doubt came up. Is this undef. behaviour? On the other hand, I'm not sure its recommended, or if its a good practice. Is it one if I ensure no exceptions to be thrown in the init function? //c.h class C{ float vx,vy; friend void init(C& c); public: C(); }; //c.cpp C::C() { init(*this); } void init(C& c) //throws() to ensure no exceptions ? { c.vx = 0; c.vy = 0; } Thanks in advance

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  • How do I select all parenting items based on a given node's attribute in php's xPath?

    - by bakkelun
    I have an XML feed that looks something like this (excerpt): <channel> <title>Channel Name</title> <link>Link to the channel</link> <item> <title>Heading 1</title> <link>http://www.somelink.com?id=100</link> <description><![CDATA[ Text here ]]></description> <publishDate>Fri, 03 Apr 2009 10:00:00</publishDate> <guid>http://www.somelink.com/read-story-100</guid> <category domain="http://www.somelink.com/?category=4">Category 1</category> </item> <item> <title>Heading 2</title> <link>http://www.somelink.com?id=110</link> <description><![CDATA[ Text here ]]></description> <publishDate>Fri, 03 Apr 2009 11:00:00</publishDate> <guid>http://www.somelink.com/read-story-110</guid> <category domain="http://www.somelink.com/?category=4">Category 1</category> </item> <channel> That's the rough of it. I'm using this piece of PHP (excerpt): $xml = simple_xml_load_file($xmlFile); $xml->xpath($pattern); Now I want to get all ITEM-nodes (with their children) based on that pesky "domain" attribute in the category node, but no matter what I try it does-not-work. The closest I got was "//category[@domain= 'http://www.somelink.com/?category=4']" The expression I tried gave me this result: [0] => SimpleXMLElement Object ( [@attributes] => Array ( [domain] => http://www.somelink.com/?category=4 ) [0] => Category 1 [1] => SimpleXMLElement Object ( [@attributes] => Array ( [domain] => http://www.somelink.com/?category=4 ) [0] => Category 1 The expression should contain all childrens of the two items in the example, but as you can see only the info in the category node is present, I want all the item nodes. Any help would be highly appreciated.

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  • Why does the onclick function run on onclick, but not when I call it manually?

    - by Codemonkey
    This is my code // Register onclick var old_onclick = link.onclick; link.onclick = function() { astr_track_action(param); if(typeof(old_onclick) == "function") old_onclick(); } And this is the html <a onclick="alert('hello!');" href="http://www.google.com?acme=link&foo=bar">To google!</a> When I click the link, the alert pops up. But when I override the onclick with my JS code, the alert does not pop up. Any ideas? Edit: I just want to add, I have debugged and confirmed that old_onclick() is run, but no alert message shows up. Edit: Here is the full code from the loop start. I don't see how it's relevant, but it was requested: for(var i = 0; i < document.links.length; i++) { var link = document.links[i]; var eventlink = link.href.split("acme="); if(eventlink.length > 1) { var param = eventlink[1].split("&")[0]; var newlink = link.href; // Register onclick var old_onclick = link.onclick; link.onclick = function() { astr_track_action(param); if(typeof(old_onclick) == "function") old_onclick(); }

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  • how to call functions/methods within CMS block or page?

    - by latvian
    Hi, We are trying to make all our blocks and pages static so that designer or anyone else can easily change the content or design of the website, however. There is a feature that uses our own custom module. So, the template that we want to make static is calling methods out of our custom block, for example, <!--some html code--> ..... <?php $this->helpMeBePartOfCMS(); ?> ..... <!--some html code--> How do i incorporate these method calls inside cms block or page? Thank you

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  • How can I select the first child of all the children of a jQuery object?

    - by sawa
    I have a <tr> which includes several <td>s, each of which includes exactly one <div>, which may have further structure: <tr id="foo"> <td><div>...</div></td> <td><div>...</div></td> ... <td><div>...</div></td> </tr> Given a jQuery selector obj = $('#foo'), how can I get a selector that points to all the <div>s directly under a <td> under the <tr> (but nothing within the <div>s)? Probably chldren() and/or find() may be relevant, but I am not sure.

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  • How can I call a method given only its name?

    - by mfolnovich
    I'm trying to have method void run( string method ) which would run method in that class. For example: class Foo { public: void run( string method ) { // this method calls method *method* from this class } void bar() { printf( "Function bar\n" ); } void foo2() { printf( "Function foo2\n" ); } } Foo foo; int main( void ) { foo.run( "bar" ); foo.run( "foo2" ); } this would print: Function bar Function foo2 Thanks! :)

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  • Can func get the lineno who call itself? (C/C++)

    - by kingkai
    Hi, I've a problem , as the following code discribe itself. 1 #include<stdlib.h> 2 #include<stdio.h> 3 void log() 4 { 5 printf("Log [Line:%d]\n",__LINE__); 6 } 7 int main() 8 { 9 log(); 10 log(); 11 } The expected result is Log [Line:9] Log [Line:10] But, the fact is Log [Line:5] Log [Line:5] No surprising, LINE has been substituted at the pre-process stage as 5. My Question is, how to design the log function to get the expected result? Thanks!

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  • Need to call Silverlight Handler event and then serverside event on Page submit.

    - by Shivkant
    I have a Silverlight control on page which has a upload control. the silverlight exposes some events such as StartUpload() = To start the file upload, StopUpload() = To stop the file upload if running, CheckFileStatus() = to check the status of the file upload. The page has aspx Submit button with onclientclick event and ocClick event. <asp:Button ID="btn_upload" Text="External Upload" runat="server" OnClientClick="Javascript:StartUpload();" OnClick="btn_upload_Click" /> When I click on the aspx Submit Button, the file selected in Silverlight control should be uploaded and after the completion of upload, the Server side event should get called. I tried for it but was not able to do so. Please help me out!....

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  • cant get ajax response (JSON) to call 'success' function?

    - by Haroldo
    for some reason the success function isnt being called? javscript: $.ajax({ type: 'POST', url: 'http://localhost/hf_latest_desktop/st_pages/user_area/acc_buttons/pass_change/pass_change_ajax.php', data: data, dataType: 'json', success: function(e){ console.log(e); if(e.status == 'success'){ alert('your password has been changed!'); } if(e.status == 'error1'){ alert('please fill in all inputs!'); } if(e.status == 'error2'){ alert('password incorrect!'); } if(e.status == 'error3'){ alert('change failed!'); } } }); php file ajax is calling to: <?php session_start(); session_cache_limiter('nocache'); header('Expires: ' . gmdate('r', 0)); header('Content-type: application/json'); $status = 'error1'; //for sake of example ?> {'status':'<?php echo $status; ?>'}

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  • How to add links that select the preferred language (CodeIgniter's Language Class)?

    - by janoChen
    I just finished this tutorial: http://codeigniter.com/wiki/Internationalization_and_the_Template_Parser_Class/ but now I want some links to change english to spanish I know how to change it by modifying the controller example.php: # Load language $this->lang->load('example', 'english'); But I can't figure out how to do that in the view file example.php What's the simplest and best way of doing this?

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  • Is it faster to compute values in a query, call a Scalar Function (decimal(28,2) datatype) 4 times,

    - by Pulsehead
    I have a handful of queries I need to write in SQL Server 2005. Each Query will be calculating 4 unit cost values based on a handful of (up to 11) fields. Any time I want 1 of these 4 unit cost values, I'll want all 4. Which is quicker? Computing in the SQL Query ((a+b+c+d+e+f+g+h+i)/(j+k)), calling ComputeScalarUnitCost(datapoint.ID) 4 times, or joining to ComputeUnitCostTable(datapoint.ID) one time?

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  • C++ & C#, how to create wrapper dll in C++ for C# to call instance function in C++ dll?

    - by 5YrsLaterDBA
    Received an unmanaged C++ dll with instance functions which need to be called from my C#. need to write a wrapper C++ dll to bridge the C# and original C++ dll as suggested by experts here. it is new to me and want to learn from you. Header file of the original C++ dll likes this: class EXPORT_MACRO NB_DPSM { private: string sFileNameToAnalyze ; public: NB_DPSM(void); ~NB_DPSM(void); void setFileNameToAnalyze(string FileNameToAnalyze) ; int WriteGenbenchData(string& message) ; }; Start from a Class Library project template or CLR Empty Project template? What's the wrapper code should look like? Anywhere has step by step example for this? thanks,

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  • jQuery AJAX call working in IE but not FF?

    - by Uma Maheshwar
    $.ajax({ type: "GET", url: 'http://services.somewhere.com/MethodName', data: { 'param1':'something', 'param2': 'somethingElse' }, cache: false, dataType: 'jsonp', contentType: "application/json; charset=utf-8", success: function(view) { alert('success'); }, error: function(xhr, ajaxOptions, thrownError) { alert(xhr.status); alert(xhr.responseText); alert(xhr.statusText); } });

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  • does such a c++ tool exist? [I dont know what to call it]

    - by VSC
    Hello, I am going through the process of trying to figure out how a library of code works. I would like some sort of tool that would analyze the program that I run off of the library and tells me what functions are called in what order by each thread. Does such a tool exist? What google terms would I use to find such a program? Note: Using VS2008/Win7/C++

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  • why does the data property in an jquery ajax call override my return false?

    - by user315709
    hi, i have the following block of code: $("#contact_container form, #contact_details form").live( "submit", function(event) { $.ajax({ type: this.method, url: this.action, data: this.serialize(), success: function(data) { data = $(data).find("#content"); $("#contact_details").html(data); }, }); return false; } ; when i leave out the data: this.serialize(), it behaves properly and displays the response within the #contact_details div. however, when i leave it in, it submits the form, causing the page to navigate away. why does the presence of the data attribute negates the return false? (probably due to a bug that i can't spot...) also, is the syntax to my find statement correct? it comes back as "undefined" even though i use a debugger to check the ajax response and that id does exists. thanks, steve

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