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  • PHP / XHTML. Should I place everything in echo tags?

    - by 110175914651386975417
    A quick question involving PHP development, I seem to be wondering about this more and more as I develop more complex sites. Basically say we have a basic PHP / XHTML inbox (messaging system). I perform checks at the top (check if user is logged in, check if user has correct permissions etc). Then use the 'header('location:www.abc.com)' function if the authentication fails. The question is do I write the rest of the inbox code in a huge 'else' block or just use standard html. I read somewhere about about it being bad to put any code after using the 'header' function.

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  • (Strange) C++ linker error in constructor

    - by Microkernel
    I am trying to write a template class in C++ and getting this strange linker error and can't figureout the cause, please let me know whats wrong with this! Here is the error message I am getting in Visula C++ 2010. 1>------ Rebuild All started: Project: FlashEmulatorTemplates, Configuration: Debug Win32 ------ 1> main.cpp 1> emulator.cpp 1> Generating Code... 1>main.obj : error LNK2019: unresolved external symbol "public: __thiscall flash_emulator<char>::flash_emulator<char>(char const *,struct FLASH_PROPERTIES *)" (??0?$flash_emulator@D@@QAE@PBDPAUFLASH_PROPERTIES@@@Z) referenced in function _main 1>C:\Projects\FlashEmulator_templates\VS\FlashEmulatorTemplates\Debug\FlashEmulatorTemplates.exe : fatal error LNK1120: 1 unresolved externals ========== Rebuild All: 0 succeeded, 1 failed, 0 skipped ========== Error message in g++ main.cpp: In function âint main()â: main.cpp:8: warning: deprecated conversion from string constant to âchar*â /tmp/ccOJ8koe.o: In function `main': main.cpp:(.text+0x21): undefined reference to `flash_emulator<char>::flash_emulator(char*, FLASH_PROPERTIES*)' collect2: ld returned 1 exit status There are 2 .cpp files and 1 header file, and I have given them below. emulator.h #ifndef __EMULATOR_H__ #define __EMULATOR_H__ typedef struct { int property; }FLASH_PROPERTIES ; /* Flash emulation class */ template<class T> class flash_emulator { private: /* Private data */ int key; public: /* Constructor - Opens an existing flash by name flashName or creates one with given FLASH_PROPERTIES if it doesn't exist */ flash_emulator( const char *flashName, FLASH_PROPERTIES *properties ); /* Constructor - Opens an existing flash by name flashName or creates one with given properties given in configFIleName */ flash_emulator<T>( char *flashName, char *configFileName ); /* Destructor for the emulator */ ~flash_emulator(){ } }; #endif /* End of __EMULATOR_H__ */ emulator.cpp #include <Windows.h> #include "emulator.h" using namespace std; template<class T>flash_emulator<T>::flash_emulator( const char *flashName, FLASH_PROPERTIES *properties ) { return; } template<class T>flash_emulator<T>::flash_emulator(char *flashName, char *configFileName) { return; } main.cpp #include <Windows.h> #include "emulator.h" int main() { FLASH_PROPERTIES properties = {0}; flash_emulator<char> myEmulator("C:\newEMu.flash", &properties); return 0; }

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  • jQuery sequence

    - by Happy
    $(".item").each(function(){ var item_link = $(this).find("a").attr("href"); $(this).prepend('<div class="img_url"></div>'); var img_url = $('div.img_url', this); $.get(item_link, function(data) { var src = $('.poster img', data).attr('src'); img_url.html(src); }); }); Each .get should be started after the previous is finished. Now all the .get start in one time. Any idea?

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  • jQuery filter selector, is this right?

    - by fire
    It seems to work ok but I don't know if this can be impoved on or not. I want to select any HTML tag that has a class of edit-text-NUM or edit-html-NUM and change the color of it. Here is what I am using... jQuery(document).ready(function(){ jQuery('*') .filter(function() { return this.className.match(/edit-(text|html)-\d/); }) .css({ 'color': '#ff0000' }); }); Does that look ok and is the regex ok? *edit: Also is this efficient? I am aware that using jQuery('*') might be a bit of a hog if it's a large page. It only has to work from <body> down so maybe it could be changed?

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  • contents().find() not producing the same result as changing selector context? - jQuery

    - by Alex
    Hello all, I have a function that looks somewhat like this: function(domObj) { var currentObj = $(domObj); ... currentObj.contents().find(".ws").after("foobar"); } My problem is that the above method of using .contents().find() is not working. "foobar" never gets stuffed after the specified dom element, represented by the selector, .ws However if I do this: $(".ws", currentObj).after("foobar"); Then the string, "foobar" gets appended every time. My question: Are not these two methods supposed to be equivilant? How/what am I doing wrong in my use of .contents().find() so that it is not working? Thanks!

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  • Do I really need to return Type::size_type?

    - by dehmann
    I often have classes that are mostly just wrappers around some STL container, like this: class Foo { public: typedef std::vector<whatever> Vec; typedef Vec::size_type; const Vec& GetVec() { return vec_; } size_type size() { return vec_.size() } private: Vec vec_; }; I am not so sure about returning size_type. Often, some function will call size() and pass that value on to another function and that one will use it and maybe pass it on. Now everyone has to include that Foo header, although I'm really just passing some size value around, which should just be unsigned int anyway ...? What is the right thing to do here? Is it best practice to really use size_type everywhere?

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  • Javascript jQuery .click() callback references local variable from the calling method instead of cop

    - by Eric Freese
    The following jQuery Javascript code is included on an otherwise empty page. $(function() { for (var i = 0; i < 10; i++) { element = $('<div>' + i + '</div>'); element.click(function() { alert(i); }); $('body').append(element); } }); The desired behavior is that this code should generate 10 div elements numbered from 0 to 9. When you click on a div element, an alert popup will show the number of the div element you clicked on (i.e. if a user clicks on the div element labeled '4', the alert popup should show the number 4). The alert popup instead shows the number 10 regardless of which div element is clicked on. How can I modify this code to make it behave in the desired way?

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  • getResponseHeader('last-modified'); does not change value

    - by telexper
    var page = 'data/appointments/<? echo $_SESSION['name']; ?><? echo $_SESSION['last']; ?>App.html'; var lM; function checkModified(){ $.get(page, function(a,a,x){ var mod = x.getResponseHeader('last-modified'); alert (lM); alert ("page" +mod); }); } when i alert the last-modified from my page, it outputs the same value, even when when i deleted all my cookies and cache , deleted the file from the server and replace it. it still outputs one value Tue , Oct 23, 2012 3:37:41 GMT

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  • jQuery - Traversing the DOM

    - by danit
    Here is my HTML: <li> <div class="menu_inner"> <a href="#"> <div class="button"><img class="486" src="images/portalbutton.png" /></div> <div class="prod_description">&nbsp;</div> </a> </div> </li> I want to add a .click() function to .prod_description, the click event should take the background colour applied in CSS from the li element. Using this code: $(".prod_description").mousedown(function() { $('#toolbar').css('background-color', $(this).parent().css('background-color')) }) I dont seem to be able to get the correct $(this).parent() combination....

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  • jquery small issue I need help with

    - by Martin
    Hi I need help with a bit of jquery, I am renaming dropdown lists when a checkbox next to them is clicked. I want to get the selected option value of the dropdown called 'Prev' in the code below and assign to the checkbox that is clicked. I hope it makes sense. Thanks $('.mutuallyexclusive').live("click", function() { checkedState = $(this).attr('checked'); $('.mutuallyexclusive:checked').each(function() { $(this).attr('checked', false); $(this).attr('name', 'chk'); }); $(this).attr('checked', checkedState); if (checkedState) { jQuery('#myForm select[name=cat.parent_id]').attr('name', 'bar') // here is the bit i need help with var prev = $(this).prev('select').attr("name", 'cat.parent_id'); } else { var prev = $(this).prev('select').attr("name", 'dd'); } }); });

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  • Flex Builder I want to go from titleWindow to a panel.

    - by dejaninic
    Hi. I'm building an user login page and I want to go from titleWindow to Panel. I'm suing following function but it always takes me back to parentApplication. My question is how can I go to my panel and not to Application page. I know that I'm using parentApplication but what should I use instead??? Here is a part of my code: private function handleLogin(event:ResultEvent):void { Alert.show("You have succesfully logged in.", "Information", Alert.OK, null, null, null, Alert.OK); parentApplication.accountPage.mainService.getAccount(); PopUpManager.removePopUp(this); }

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  • Javascript .removeChild() only deletes even nodes?

    - by user1476297
    first posting. I am trying dynamically add children DIV under a DIV with ID="prnt". Addition of nodes work fine no problem. However strange enough when it comes to deleted nodes its only deleting the even numbered nodes including 0. Why is this, I could be something stupid but it seem more like a bug. I could be very wrong. Please help Thank you in advance. <script type="text/javascript"> function displayNodes() { var prnt = document.getElementById("prnt"); var chlds = prnt.childNodes; var cont = document.getElementById("content"); for(i = 0; i < chlds.length; i++) { if(chlds[i].nodeType == 1) { cont.innerHTML +="<br />"; cont.innerHTML +="Node # " + (i+1); cont.innerHTML +="<br />"; cont.innerHTML +=chlds[i].nodeName; cont.innerHTML +="<br />"; } } } function deleteENodes() { var prnt = document.getElementById("prnt"); var chlds = prnt.childNodes; for(i = 0; i < chlds.length; i++) { if(!(chlds[i].nodeType == 3)) { prnt.removeChild(chlds[i]); } } } function AddENodes() { var prnt = document.getElementById("prnt"); //Only even nodes are deletable PROBLEM for(i = 0; i < 10; i++) { var newDIV = document.createElement('div'); newDIV.setAttribute("id", "c"+(i)); var text = document.createTextNode("New Inserted Child "+(i)); newDIV.appendChild(text); prnt.appendChild(newDIV); } } </script> <title>Checking Div Nodes</title> </head> <body> <div id="prnt"> Parent 1 </div> <br /> <br /> <br /> <button type="button" onclick="displayNodes()">Show Node Info</button> <button type="button" onclick="deleteENodes()">Remove All Element Nodes Under Parent 1</button> <button type="button" onclick="AddENodes()">Add 5 New DIV Nodes</button> <div id="content"> </div> </body>

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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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  • Is there any event sent to window when new tab opens from parent tab on click a anchor tag with target _blank?

    - by Justin John
    I need to write callback function on clicking an anchor with target="_blank". <a rel="external" href="http://twitter.com/" target="_blank"> <img src="twitter.png"> </a> I think, following code block will do it. $("a[target='_blank']").click(function() { // action required }); Is there any other way where we can get an event with new tab opens? For example: The unload event is sent to the window element when the user navigates away from the page. If I think same perspective, Is there any event sent to window when a new tab opens.

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  • [C++] Passing around objects to network packet handlers ?

    - by xeross
    Hey, I've been writing a networking server for a while now in C++ and have come to the stage to start looking for a way to properly and easily handle all packets. I am so far that I can figure out what kind of packet it is, but now I need to figure out how to get the needed data to the handler functions. I had the following in mind: Have a map of function pointers with the opcode as key and the function pointer as value Have all these functions have 2 arguments, packet and ObjectAccessor ObjectAccessor class contains various functions to fetch various items such as users and alike Perhaps pass the user's guid too so we can fetch it from the objectaccessor I'd like to know the various implementations others have come up with, so please comment on this idea and reply with your own implementations. Thanks, Xeross

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  • jQuery get attribute

    - by Happy
    There are many class="item" blocks on the page. For each one there is different var item_link and ajax request. Ajax searches for src attribute of .message img and throws it to var src. $(".item").each(function(){ var item_link = "http://..."; $(this).prepend('<div class="src"></div>'); $.get(item_link, function(data) { var src = $('.message img', data).attr('src'); }); }); How to print var src to <div class="src"></div>? Thanks.

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  • [JavaScript] Checking for multiple images loaded.

    - by Stanni
    Hi, I'm using the canvas feature of html5. I've got some images to draw on the canvas and I need to check that they have all loaded before I can use them. I have declared them inside an array, I need a way of checking if they have all loaded at the same time but I am not sure how to do this. Here is my code: var color = new Array(); color[0] = new Image(); color[0].src = "green.png"; color[1] = new Image(); color[1].src = "blue.png"; Currently to check if the images have loaded, I would have to do it one by one like so: color[0].onload = function(){ //code here } color[1].onload = function(){ //code here } If I had a lot more images, Which I will later in in development, This would be a really inefficient way of checking them all. How would I check them all at the same time?

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  • jQuery code .val(); not working in FF

    - by SzamDev
    Hi I have this code function calculateTotal() { var total = 0; $(".quantity").each(function() { if (!isNaN(this.value) && this.value.length != 0) { total += parseFloat(this.value); } }); $("#total_quantity").val(total); } <input onchange="calculateTotal();" name="sol1" type="text" class="result_form_textbox_small quantity" id="sol1" /> <input name="total_quantity" type="text" class="result_form_textbox_small" id="total_quantity" /> This code is working in IE very good but it's not working in FF. What is the proplem? Thanks in advance.

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  • C++ - Implementing my own stream

    - by HardCoder1986
    Hello! My problem can be described the following way: I have some data which actually is an array and could be represented as char* data with some size I also have some legacy code (function) that takes some abstract std::istream object as a param and uses that stream to retrieve data to operate. So, my question is the following - what would be the easy way to map my data to some std::istream object so that I can pass it to my function? I thought about creating a std::stringstream object from my data, but that means copying and (as I assume) isn't the best solution. Any ideas how this could be done so that my std::istream operates on the data directly? Thank you.

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  • cant figure out pointer assignment in c

    - by vadiklk
    int add(char *var1, char *var2, char **var3) { int num1, num2, length1 = strlen(var1), length2 = strlen(var2), length = max(length1, length2) + 1; char *result = (char*) calloc(length, sizeof(char)); ... free(*var3); *var3 = result; return 0; } out side of the function i get its still nothing(var3); more detail: int addSubCommand(char **vars, int isAdd) { ... return add(vars[index1], var2, &(vars[index3])); } that's where i call add. the char** vars goes from every function to the other.

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  • bool - 255 value

    - by user994165
    I have this function defined: struct heap_validation { size_t num_alloc; size_t num_alloc_sz; struct memory *mem; }; ... bool get_isallocated(struct metadata_record *); When I call the heap_validation function from hashtable_traverse and print the result, I've gotten the following values: 0,255 ,246 void hashtable_traverse(struct metadata_record *metarec, struct heap_validation *heap_val) { printf("get_isallocated(metarec): %d\n",get_isallocated(metarec)); bool retrieved = false; bool allocated = get_isallocated(metarec); if (allocated) { heap_val->num_alloc += 1; I also tried with %d and I get the same result.

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  • C++ "delayed" template argument

    - by aaa
    hello. Is there direct way to do the following: template < class > struct f {}; template < class F > void function() { F<int>(); //for example // ? F template <int>(); } function < f >(); I have workaround by using extra class around template struct. I am wondering if it's possible to do so directly. Thanks

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  • what happens with memory when I throw an exception?

    - by Vincenzo
    This is the code (just a simplification of a real problem): <?php echo memory_get_usage() . "\n"; function f() { throw new Exception(); } function foo() { try { f(); } catch (Exception $e) { } } foo(); echo memory_get_usage() . "\n"; This is the output (PHP 5.3): 630680 630848 What happened with memory (168 bytes lost)? The exception object is not destroyed? Please, help! Thanks

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