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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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• Permission denied for folder creation using background_fu

  - by Anubhaw

  Hi All, I am calling a controller method to convert a video file. This process is called using background_fu job. When the function tries to create a new folder in rails root it gives error i.e. Permission denied. The function performs well if not called in background job process. Can any one point out what can be the trouble. Thanks in advance, Anubhaw

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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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• 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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• 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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• 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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• 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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• 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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• 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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• 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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• 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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• 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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• 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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• Thread safety with heap-allocated memory

  - by incrediman

  I was reading this: http://en.wikipedia.org/wiki/Thread_safety Is the following function thread-safe? void foo(int y){ int * x = new int[50]; /*...do some stuff with the allocated memory...*/ delete x; } In the article it says that to be thread-safe you can only use variables from the stack. Really? Why? Wouldn't subsequent calls of the above function allocate memory elsewhere?

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• matlab: subs on symbolic constant returns scalar instead of vector for a vector input

  - by noam

  usually, symbolic functions return vectors for vector inputs: syms('x'); f=x*2; subs(f,[1 2 3]) outputs: [2 4 6] but doing f=sym('0'); subs(f,[1 2 3]); outputs: 0 and not: [0 0 0] so basically, my questions is how do I make f behave as a "normal" symbolic function. I can do something ugly like f=x-x to create a function that always returns zero, but is there a prettier way?

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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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• Group multiple or statements within an IF in javascript

  - by nick

  The following code works: $(".valClear").each(function () { if ($(this).val().indexOf(".png") == -1) { $(this).val(''); } }); However this doesn't (the value is removed even if it contains .png or .jpeg), what am I doing wrong? $(".valClear").each(function () { if (($(this).val().indexOf(".png") == -1) || ($(this).val().indexOf(".jpeg") == -1)) { $(this).val(''); } });

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• Javascript jQuery ajax submit default data

  - by onlineracoon

  How to submit default data when using $.ajax? I have tried: $.ajaxPrefilter(function(options, originalOptions, jqXHR) { // can't access anything here... (tried jqXHR.data but undefined) }); $.ajaxSetup({ beforeSend: function(jqXHR, settings) { // can't access anything here... (tried jqXHR.data but undefined) } }); I need this so I can send my CSRF token, each time and when logged in submit the user ID each time. I prefer not to submit a token in headers. Thanks

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• How to get value of href in Jquery

  - by user342391

  I am trying to grab the value of my href in jquery how is it done'? This is what I have done: $('#playbackbutton').click( function() { $("#playbackdiv").load("$('a:href').val();", [], function(){ $("#playbackdiv").dialog("open"); } ); return false; } I need to get the value of the href in my a tag. here is the html: <a href="/record/123.wav">play</a>

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• Jquery with & , + and etc signs

  - by Loon Yew

  function testing() { $.ajax({ type: "POST", url: "testing.php", data: "call="+$("#abc").val(), success: function(msg){ alert( msg ); } }); } I want to post the data to testing.php but if i got special characters like & sign. it will create the problem. How do i go about it? Thank You

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• Local variable vs parameter

  - by Dhana

  function doIt(param) { var localVar = param; //do lots of stuff with localVar } function doIt(param) { //do lots of stuff with param } Is there any difference in terms of efficiency between the code above?

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• Returning the size of available virtual memory at run-time in C++

  - by Greenhouse Gases

  In C++ is there a predefined library function that will return the size of RAM currently available on a computer a program is being run on, at run-time? For instance, if an object is 4bytes, then can we divide the available virtual memory by 4 bytes to give an estimate of how many more objects could be stored by the program safely? I have used the sizeof() function to return the size of objects within my program. Thanks

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• Optimizing division/exponential calculation

  - by Saltheart

  I've inherited a Visual Studio/VB.Net numerical simulation project that has a likely inefficient calculation. Profiling indicates that the function is called a lot (1 million times plus) and spends about 50% of the overall calculation within this function. Here is the problematic portion Result = (A * (E ^ C)) / (D ^ C * B) (where A-C are local double variables and D & E global double variables) Result is then compared to a threshold which might have additional improvements as well, but I'll leave them another day any thoughts or help would be appreciated Steve

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• mySQL convert varchar to date

  - by Jeff V

  I need to convert a varchar value of 1/9/2011 to a date in mySQL and I want only the month and year. So that I can then use the PERIOD_DIFF function (so I would need the above to be converted to 201101). I've tried various ways using the STR_TO_DATE function: SELECT STR_TO_DATE(CYOApp_oilChangedDate, '%m/%Y') FROM CYO_AppInfo But I get weird results... (for example: 2009-01-00) What am I doing incorrectly?

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• DrawPrimitive with alpha

  - by confusedman

  I'm trying to draw a line with the DrawPrimitive function in Direct3D. Can I draw tranparent line with the function? If I can, how to design it?

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