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• C++ How fast is passing around objects?

  - by wndsr

  Assuming we are running a compiled C++ binary: Is passing around an int (e.g. function to function, or writing it into variables) slower than passing around structs/class objects like the following? class myClass { int a; int b; char c; vector d; string e; }

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• Disable errors in PHP

  - by spacemonkey

  How to disable errors just for particular php function, and in the same time to know that the error occurred? For instance, I use a php function parse_url, to parse an array of urls, sometimes it returns an error, what I want to do is to parse next url once error occurs, and not to show it(error) on the screen.

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• What is the best way to distribute C++ class

  - by Tarun

  Hi, I have created a big C++ class. I need to give it to another person. I dont want him to see the function implementations but he should be able to use it as a class. (for example: he can inherit this class, use its full functionality in his code but can not see or change function implementations etc) How can i do this. thanking you..

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• Traversing stack and retrieving main arguments

  - by dlee313

  Given the size of the code of the main function in bytes passed as a parameter to a function, what is the best way to get to the base address for the main code and retrieve the first char * in the argv array?

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• How can I get the correct headers automatically given a filetype in PHP?

  - by incrediman

  A few times I've run into situations where I'd like to be able to include a file using PHP, and depending on the included filetype, output the appropriate headers. In the past I've just done this manually by switch/casing the extension type with the appropriate content-type headers. However what I'm wondering now is if there's a function like get_header($filename) or maybe get_contenttype($extension) For example if I wanted to route all requests for media through a php file, I could use that function to output the correct headers.

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• javascript iterate array of variables and reassign value to each variable

  - by Shanison

  Hi how should i iterate array of variables and reassign value to each variable. E.g in jQuery function test(param1, param2) { $.each([param1, param2], function (i, v) { //check if all the input params have value, else assign the default value to it if (!v) v = default_value; //this is wrong, can't use v, which is value } } How should I get the variable and assign new value in the loop? Thank you very much!

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• Repeat elements of vector in R

  - by bshor

  Hi, I'm trying to repeat the elements of vector a, b number of times. That is, a="abc" should be "aabbcc" if y = 2. Why doesn't either of the following code examples work? sapply(a, function (x) rep(x,b)) and from the plyr package, aaply(a, function (x) rep(x,b)) I know I'm missing something very obvious ...

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• Is it possible to get a pointer to String^'s internal array in C++/CLI?

  - by CannibalSmith

  The goal is to avoid copying the string data when I need a const wchar_t*. The answer seems to be yes, but the function PtrToStringChars doesn't have its own MSDN entry (it's only mentioned in the KB and blogs as a trick). That made me suspicious and I want to check with you guys. Is it safe to use that function?

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• Newbie: understanding main and IO()

  - by user1640285

  While learning Haskell I am wondering when an IO action will be performed. In several places I found descriptions like this: "What’s special about I/O actions is that if they fall into the main function, they are performed." But in the following example, 'greet' never returns and therefore nothing should be printed. import Control.Monad main = greet greet = forever $ putStrLn "Hello World!" Or maybe I should ask: what does it mean to "fall into the main function"?

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• [PHP] Check Valid date type

  - by yukou

  may be this question had been asked, I've searched but still not confident about my problem.. my problem is checking valid date from string $a='23-June-11'; //valid $b='Normal String';//invalid I want to convert $a and $b using strtotime() before I do that, of course i want to validate whether $a or $b is a valid date format From $a i can get 23, 11 using explode function, but how about 'June'? using function above, 'June' is not numeric

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• Can i give conditions in contain in cakephp 1.3

  - by Msofts

  hi all, i m facing some problem in find function. im fetching value fro find function.i have model.contian another model . Can i give conditions in contain in cakephp is it possiblehi

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• Using jQuery, how do you mimic the form serialization for a select with multiple options selected in

  - by CarolinaJay65

  Below is my $.ajax call, how do I put a selects (multiple) selected values in the data section? $.ajax({ type: "post", url: "http://myServer" , dataType: "text", data: { 'service' : 'myService', 'program' : 'myProgram', 'start' : start, 'end' : end , }, success: function(request) { result.innerHTML = request ; } // End success }); // End ajax method EDIT I should have included that I understand how to loop through the selects selected options with this code: $('#userid option').each(function(i) { if (this.selected == true) { but how do I fit that into my data: section?

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• I am trying to understand Functions

  - by Moja Ra

  Ok I am coming into a stumbling block no matter what language I am using. I am trying to understand when I need to pass arguments in a Function and when I don't need to pass arguments in a function. Can someone give me some direction on where to find guidance on this?

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• Adding button click event when Fancybox popup opened

  - by Tom Bell

  I'm trying to add a button onclick event to a button tag when I load my Fancybox popup using the following code: var processOrder = function(id) { $('#processPopupLink').fancybox({ 'hideOnContentClick': false, 'frameWidth': 850, 'frameHeight': 695 }).click(); $('#processComplete').click(function() { alert('debug'); }); } However, it's not showing the message box when I click the button, I have no idea why it is not working, any help would be appreciated.

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• Prevent(manually entered) Code Removal in Resources.Designer

  - by Perluc

  I've added a small function in the Resources.Designer.cs and it working great, the problem is that when I add or remove something from the Resources.resx this function always get removed, is there any indicator I could put or anyway to bypass this? Thank you!

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• C++: Chr() and unichr() equivalent?

  - by alex

  I could have sworn I used a chr() function 40 minutes ago but can't find the file. I know it can go up to 256 so I use this: std::string chars = ""; chars += (char) 42; //etc So that's alright, but I really want to access unicode characters. Can I do (w_char) 512? Or maybe something just like the unichr() function in python, I just can't find a way to access any of those characters.

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• What happens when I throw an exception?

  - by helloWorld

  I have some technical questions. In this function: string report() const { if(list.begin() == list.end()){ throw "not good"; } //do something } If I throw the exception what is going on with the program? Will my function terminate or will it run further? If it terminates, what value will it return?

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• Python using methods from other classes

  - by James

  If I have two classes, and one of them has a function that I want to use in my other class, what do I use so that I don't have to rewrite my function?

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• How to Improve this if else structure in Javascript?

  - by basit74

  if(isIE()) if(termin != "") TargetElement.onclick = function() {merkzettelRemove(this, id, termin)}; else TargetElement.onclick = function() {merkzettelRemove(this, id)}; else if(termin != "") TargetElement.setAttribute("onclick","merkzettelRemove(this, " + id + ", '" + termin + "')"); else TargetElement.setAttribute("onclick","merkzettelRemove(this, " + id + ")");

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• ActionScript Defining a Static Constant Array

  - by TheDarkIn1978

  is it not possible to define a static const array? i would like to have an optional parameter to a function that is an array of colors, private static const DEFAULT_COLORS:Array = new Array(0x000000, 0xFFFFFF); public function myConstructor(colorsArray:Array = DEFAULT_COLORS) { } i know i can use ...args but i actually wanting to supply the constructor with 2 separate arrays as option arguments.

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• how to use the bounce effect in jquery

  - by pradeep

  i have included the plugin and written code like if(page) { $.post(page,{},function(data){callBackFunction(data)}); } function callBackFunction(data) { $('.page_change').html(data); $('.page_change').effect("bounce", { times:3 }, 300); $('#submit_show').show(); } The data change is happening but the bouce effect i am not getting..how do i solve this issue..

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• Reading label Id

  - by user281180

  Im having a table in which im creating a label dynamically. '<td>' + '<label for="Name" id = ' + value + '>' + text + '</label></td>' I want to retrieve the id of the label and I`m doing the following which is not working: How can I get the Id of the label? function ReadNames() { $('#Table tr').each(function() { NameID.push($(this).find('label').val()); }); }

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• javascript Refresh Div.

  - by Tom

  Hi, I am using this code to refresh the data inside of the div: <script> $(function() { $("#refresh").click(function() { $("#new").load("/new.php") }) }) </script> Except it loads the who page inside of the div, instead of just the information that is inside of the div. How do I make it refresh only the data that is inside of the div? Is there a way of doing it other than putting the information for that div in a seperate page?

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• Calling a Factory in AngularJS

  - by Kohjah Breese

  How do you call a factory? As defined below. angular.module('fb.services', []).factory('getQueryString', function () { return { call: function () { var result = {}, queryString = qs.substring(1), re = /([^&=]+)=([^&]*)/g, m; while (m = re.exec(queryString)) result[decodeURIComponent(m[1])] = decodeURIComponent(m[2]); return result; } } }); alert(getQueryString.call('this=that&me=you'));

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• Can you execute multiple statements in with a If statement?

  - by Jack Null

  This is my function: (defun MyFunction(input) (let ((NEWNUM (find input num))) (if (find input num) //if this (setq num NEWNUM) (FUNCT2) //then execute both of these (list 'not found)))) //else output this So after the if statment I want to be able to execute (setq num NEWNUM) and (FUNCT2). One to set a new variable and then the other to call a function. Any ideas on how to do this?

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