Search Results

Search found 37654 results on 1507 pages for 'function prototypes'.

Page 1178/1507 | < Previous Page | 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185  | Next Page >

• Are raw C++ pointers first class objects?

  - by Shailesh Kumar

  According to Wikipedia: An object is first-class when it: can be stored in variables and data structures can be passed as a parameter to a subroutine can be returned as the result of a subroutine can be constructed at runtime has intrinsic identity (independent of any given name) Somebody had once told me that raw pointers are not first class objects while smart pointers like std::auto_ptr are. But to me, a raw pointer (to an object or to a function) in C++ does seem to me to satisfy the conditions stated above to qualify as a first class object. Am I missing something?

  Read the article

• Can C/C++ compiler report struct member offset

  - by Chen Jun

  Hello, everyone. I'd like to ask, can compiler(e.g. Visual C++) generate a report(.txt) telling struct member offset for a struct/all structs? If so, it helps debugging quite a lot. For example, when you read disassembler code in the debugger, it can be easier to associate an offset value to a struct member. Also, it is better to have compiler report offset of each local variable on a function stack frame(e.g. the offset relative to ebp on an X86 machine). Thank you in advance.

  Read the article

• Python library to detect if a file has changed between different runs?

  - by Stefano Borini

  Suppose I have a program A. I run it, and performs some operation starting from a file foo.txt. Now A terminates. New run of A. It checks if the file foo.txt has changed. If the file has changed, A runs its operation again, otherwise, it quits. Does a library function/external library for this exists ? Of course it can be implemented with an md5 + a file/db containing the md5. I want to prevent reinventing the wheel.

  Read the article

• Highlite words from searchstring

  - by Bundy

  Hi, I wrote a little search script for a client, it works and words get highlited, BUT... Imagine this situation: search term: test found result: Hello this <a href="/news/this-is-a-test">is a test</a> In this example both 'test' in the href part and between the <a> tags get highlited, breaking the link. How could I prevent this? Edit: So this is what I need: A regex replace function that replaces all matched search strings EXCEPT the ones that are located inside a href attribute Greets, nick

  Read the article

• What is the most efficient way to get the highest and the lowest values in a Array

  - by meo

  is there something like PHP: max() in javascript? lets say i have an array like this: [2, 3, 23, 2, 2345, 4, 86, 8, 231, 75] and i want to return the highest and the lowest value in this array. What is the fastest way to do that? i have tried: function madmax (arr) { var max = arr[0], min = arr[1] if (min > max) { max = arr[1] min = arr[0] } for (i=1;i<=arr.length;i++){ if( arr[i] > max ) { max = arr[i] }else if( arr[i] < min ) { min = arr[i] } } return max, min } madmax([123, 2, 345, 153, 5, 98, 456, 4323456, 1, 234, 19874, 238, 4]) Is there a simpler way retrieve the max and min value of a array?

  Read the article

• Java escape HTML - string replace slow?

  - by cpf

  Hi StackOverflow, I have a Java application that makes heavy use of a large file, to read, process and give through to SolrEmbeddedServer (http://lucene.apache.org/solr/). One of the functions does basic HTML escaping: private String htmlEscape(String input) { return input.replace("&", "&amp;").replace(">", "&gt;").replace("<", "&lt;") .replace("'", "&apos;").replaceAll("\"", "&quot;"); } While profiling the application, the program spends roughly 58% of the time in this function, a total of 47% in replace, and 11% in replaceAll. Now, is the Java replace that slow, or am I on the right path and should I consider the program efficient enough to have its bottleneck in Java and not in my code? (Or am I replacing wrong?) Thanks in advance!

  Read the article

• Constructor Type Coercion in C++

  - by Robert Mason

  Take the following class: class mytype { double num; public: mytype(int a) { num = sqrt(a); } void print() { cout << num; } } Say there is a method which takes a mytype: void foo(mytype a) { a.print(); } Is it legal c++ (or is there a way to implement this) to call foo(4), which would (in theory) output 2? From what I can glean you can overload type casts from a user defined class, but not to. Can constructor do this in a standards-compliant manner (assuming, of course, the constructor is not explicit). Hopefully there is a way to in the end have this legal: int a; cin >> a; foo(a); Note: this is quite obviously not the actual issue, but just an example for posting purposes. I can't just overload the function because of inheritance and other program-specific issues.

  Read the article

• Handling Timeouts In A Website SQLCommand Object and c#

  - by user341684

  I'm using visual studio 2008 and sql server 2005 and everything is working just fine under normal use. However if a user is on a page for a while several minutes with no activity then clicks a button on occassion the site throws the following exception ... Procedure or Function "sp_name" parameter '@SomeParameterName', which was not supplied I'm also encountering this error in Visual Studio while debugging the application, in otherwords run the site from visual studio then make some change to the html in VS save the changes and refresh the page. The error is not consistent nor is the time the page has to stay idle in order for it to occur.... The current sql command object timeout is 30 secs and the website timeout is 30 minutes. Has anyone else experienced this scenario and what is the fix as I would not except anything to go out of scope until the website timeout occurs ... Any insight will be appreciated.

  Read the article

• dynamically create greasemonkey script

  - by qwertymk

  I'm trying to create a dynamic GM script. Here's what I thought would do it win = window.open('myScript.user.js'); win.document.writeln('// ==UserScript=='); win.document.writeln('// @name sample script'); win.document.writeln('// @description alerts hi'); win.document.writeln('// @include http://www.google.com/*'); win.document.writeln('// ==/UserScript=='); win.document.writeln(''); win.document.writeln('(function(){alert("hi");})()'); win.document.close(); Well it doesn't. Anyone have any ideas how to go about doing this?

  Read the article

• How to change the sorting of a view using hook_views_pre_view()?

  - by RD

  I've got the following: function view_sorter_views_pre_view(&$view) { // don't need $items if ($view->name == 'MOST_RECENT') { $insert = array(); $insert[order] = 'DESC'; //SORT ORDER $insert[id] = 'title'; $insert[table] = 'node'; $insert[field] = 'title'; $insert[override] = array(); $insert[override][button] = 'Override'; $insert[relationship] = 'none'; unset ($view->display['default']->display_options['sorts']['title']); $view->display['default']->display_options['sorts']['title'] = $insert; } } Basically, I'm just changing the sort order... but this does not appear on the view when opening it. Any idea why?

  Read the article

• How to get select radiobutton value using its name in jQuery?

  - by Prashant

  I am having 4 radiobuttons in my web page like below: <label for="theme-grey"><input type="radio" id="theme-grey" name="theme" value="grey" />Grey</label> <label for="theme-grey"><input type="radio" id="theme-grey" name="theme" value="pink" />Pink</label> <label for="theme-grey"><input type="radio" id="theme-grey" name="theme" value="green" />Green</label> Now in jQuery I want to get the value of selected radiobutton on click of any radiobutton out of above three. In jQuery we have id (#) and class (.) selectors but what if I want to put event on radiobutotn using thier names? as below? $("<radiobutton name attribute>").click(function(){}); Please tell me how to solve this problem. Thanks

  Read the article

• MATLAB: draw centroids

  - by Myx

  Hello - my main question is given a feature centroid, how can I draw it in MATLAB? In more detail, I have an NxNx3 image (an rgb image) of which I take 4x4 blocks and compute a 6-dimensional feature vector for each block. I store these feature vectors in an Mx6 matrix on which I run kmeans function and obtain the centroids in a kx6 matrix, where k is the number of clusters and 6 is the number of features for each block. How can I draw these center clusters in my image in order to visualize if the algorithm is performing the way I wish it to perform? Or if anyone has any other way/suggestions on how I can visualize the centroids on my image, I'd greatly appreciate it. Thank you.

  Read the article

• custom flex component, visual controls in design view

  - by bo

  Do you know how if you drag an <mx:Label> or <s:Label> component into your Flex project, when you go to design mode you get this panel on the right to set its properties like text etc. I have a custom component that I can call with actionscript, or with mxml like this: <comps:TheComp field1="OK" field2="Yes" /> The component takes this input and uses it for its internal operation private var field1:String; private var field2:String; private function initializeit() { // component takes the input and lays it out as needed } When I go to design mode, I can see the component under custom components, I can drag it to the stage and see it, but can't set its values field1 and field visually on the right like a normal <s:Label> or <mx:Label> would have. Any idea how I can add that? Do I need to make it inherit something or anything else

  Read the article

• App stays in splash screen in iOS 7.0.3

  - by Sathish

  Recently in iOS 7.0.3, my app stays in the splash screen and was not going into the app at all. If i kill the app, and launch it again it opens up without any issues. Can anyone help me on this issue?. I think the application -didFinishLaunchingWithOptions was not returning yes. Note: I have a lot of stuffs like deleting database, initializing a dozen of buttons in appdelegate's *init* function. I know that it is a bad practice to have things in init but since its been there for more than 4 years and was working fine with previous OS versions i didn't find a good reason to change it. Also this issue is not happening all the time. My app size is 40 MB. Thanks in advance...

  Read the article

• updating button text and other issues

  - by droidus

  I am trying to update my button. but the problem is that I can't have an ID/name with it, right, when doing this? so what if I have multiple forms on the page, and must identify the button? <input type="submit" value="Upload my File" style="background-color:#00F; font-size:14px; padding:1em;" onclick=" this.value='Please wait...'; this.disabled = true; var theForm = this.form; window.setTimeout(function(){theForm.submit();},3);" /> also, the button doesn't seem to wait 3 seconds when I hit the submit button.

  Read the article

• In Birt Reports - Displaying the most common string value in group.

  - by Ben

  For this example data: Index, State, Food 1, CA, Hamburger 2, NY, Lettuce 3, CA, Cheese 4, NY, Lettuce 5, NY, Cheese 6, AR, Cheese I would like to group by State and show the most common food for each state. So the result for the example should be: State, Popular Food CA, Hamburger NY, Lettuce AR, Cheese The problem is I can't find an aggregation that would return the most common string. There is the 'mode' function but it only works on integers. Am I missing Something? Thanks!

  Read the article

• set target.id to div id and a number?

  - by Claes Gustavsson

  The target id below is map_external, but I would like to get map_external(and a number) I have this: $('#jqt').bind('pageAnimationStart', function(e, info){ if (e.target.id == 'map_external') { if (info.direction =='in') { localiser(); } and it works, and my target page looks like this: <div id="map_external"> content.... </div> but I would like to have a random number aswell, like this: <div id="map_external<%=asp random number%>"> content.... </div> so how do i write if (e.target.id == 'map_external') so that it gets map_external and a number(any number)? Thanks!

  Read the article

• Pass information to php file from javascript while restricting user from doing it their self?

  - by Sean Madigan

  I am making a game where the battle system uses javascript to battle. At the end of the battle you either win or lose. If the user wins, I need to update the mysql database with the XP they earned. The best way I can think of doing this is to have the javascript run an ajax function when the user wins that POSTs something like addxp.php?amount=235, but if I do that then the user can easilly look at the source and see that they can just enter in that page themself to update their xp without battling. But this is the only way I know how to do it? Help please :-/

  Read the article

• nodejs, mongodb - How do I operate on data from multiple queries?

  - by Ryan

  Hi all, I'm new to JS in general, but I am trying to query some data from MongoDB. Basically, my first query retrieves information for the session with the specified session id. The second query does a simple geospacial query for documents with a location near the specified location. I'm using the mongodb-native javascript driver. All of these query methods return their results in callbacks, so they're non-blocking. This is the root of my troubles. What I'm needing to do is retrieve the results of the second query, and create an Array of sessionIds of all the returned documents. Then I'm going to pass those to a function later. But, I can't generate this array and use it anywhere outside the callback. Does anyone have any idea how to properly do this? http://dpaste.org/wXiE/

  Read the article

• typeof === "undefined" vs. != null

  - by Thor Thurn

  I often see JavaScript code which checks for undefined parameters etc. this way: if (typeof input !== "undefined") { // do stuff } This seems kind of wasteful, since it involves both a type lookup and a string comparison, not to mention its verbosity. It's needed because 'undefined' could be renamed, though. My question is: How is that code any better than this approach: if (input != null) { // do stuff } As far as I know, you can't redefine null, so it's not going to break unexpectedly. And, because of the type-coercion of the != operator, this checks for both undefined and null... which is often exactly what you want (e.g. for optional function parameters). Yet this form does not seem widespread, and it even causes JSLint to yell at you for using the evil != operator. Why is this considered bad style?

  Read the article

• ShGetFileInfo called for directory oddity

  - by Axarydax

  Hello, I have a simple file browser and there I display files and folders, obtained by (for directory) SHFILEINFO info = new SHFILEINFO(); SHGetFileInfo(filename, FILE_ATTRIBUTE_DIRECTORY, ref info,Marshal.SizeOf(info), SHGFI_ICON | SHGFI_USEFILEATTRIBUTES | SHGFI_SMALLICON | SHGFI_ADDOVERLAYS); It works 100% fine, but I have noticed an oddity - if I try to obtain an icon for directory, but specify FILE_ATTRIBUTE_NORMAL instead of FILE_ATTRIBUTE_DIRECTORY but it does weird stuff for directories - normal folders have "unknown file type white paper" icons, recycle bin has VLC icon, etc. Directories under SVN have proper overlay, but base file icon (white sheet of paper). I understand that base icon for directory would now be the one of unknown file, but why do some folders have totally strange icon? Config.MSI has installer icon, recycle bin has VLC icon (wtf?!), etc. What does the shell function do with this parameters? Exactly what icon does it obtain? Again, this is not a problem, I'm just curious.

  Read the article

• How to refer to object in JavaScript event handler?

  - by George Edison

  Note: This question uses jQuery but the question has nothing to do with jQuery! Okay so I have this object: var box = new BigBox(); This object has a method named Serialize(): box.AddToPage(); Here is the method AddToPage(): function AddToPage() { $('#some_item').html("<div id='box' onclick='this.OnClick()'></div>"); } The problem above is the this.OnClick() (which obviously does not work). I need the onclick handler to invoke a member of the BigBox class. How can I do this? How can an object refer to itself in an event handler?

  Read the article

• Learning 'dynamic' javascript bookmarklet

  - by Seatbelt99

  Little help for a javascript noob please... I have this in a .js file on my web server: Q=document.selection?document.selection.createRange().text:document.getSelection(); alert(Q); I highlight some text on a web page (tested with Chrome and firefox) and paste this into the address bar: javascript:(function(){vara=document.createElement('SCRIPT');a.type='text/javascript';a.src='http://automatethegame.com/js/test.js?';document.getElementsByTagName("head")[0].appendChild(vara)})(); it appears to do nothing. Any assistance or suggestions would be appreciated. thanks

  Read the article

• ExtJS accordion setActiveItem

  - by xsix

  Hello. I am developing an application using ExtJS. I have an accordion and I need to select an active item(so it expands). Accordion.setActiveItem outputs: "setActiveItem" is not a function in a browser's error window. Second issue is that hideCollapseTool property, when set to true in the initialisation, doesn't do anything. Collapse tools still are being displayed. I am using ExtJS 3.1.1. I would be very thankful for any tips and answers.

  Read the article

• When using DrawText, what does TextFormatFlags.Internal (a.k.a. DT_INTERNAL) do?

  - by Daniel Stutzbach

  When using TextRenderer.DrawText(), what does setting the TextFormatFlags.Internal flag actually do? Equivalently, what does setting the DT_INTERNAL flag to Win32's DrawTextEx() function do? More to the point, when should I set that flag and when should I not set it? The documentation says: "Uses the system font to calculate text metrics", but I'm not entirely sure what that means. I've done some limited testing and setting the flag seems to change how the font is rendered when using a small font size, but doesn't seem to make a difference when using a large font size.

  Read the article

< Previous Page | 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185  | Next Page >