Daily Archives

Articles indexed Wednesday May 19 2010

Page 80/122 | < Previous Page | 76 77 78 79 80 81 82 83 84 85 86 87  | Next Page >

  • C++ performance when accessing class members

    - by Dr. Acula
    I'm writing something performance-critical and wanted to know if it could make a difference if I use: int test( int a, int b, int c ) { // Do millions of calculations with a, b, c } or class myStorage { public: int a, b, c; }; int test( myStorage values ) { // Do millions of calculations with values.a, values.b, values.c } Does this basically result in similar code? Is there an extra overhead of accessing the class members? I'm sure that this is clear to an expert in C++ so I won't try and write an unrealistic benchmark for it right now

    Read the article

  • Is Learning the win32 API Worthwhile?

    - by kronoz
    I was certain that somebody would have specifically asked this question, but from what I can see no-one has (there's been a question about learning win32 but that doesn't cover whether it's worthwhile doing so). I am very interested in gaining a deeper understanding of all the systems I use (I mostly program in C#, at least professionally), so I wondered, very simply - is learning win32 worthwhile, or is it overkill? Am I wasting my time? Is the knowledge I'd gain worth the effort? Similar / related questions on StackOverflow: Does it still make sense to learn low level WinAPI programming? How relevant is Win32 programming to modern professionals?

    Read the article

  • Recursive COUNT Query (MS SQL)

    - by Cosmo
    Hello Guys! I've two MS SQL tables: Category, Question. Each Question is assigned to exactly one Category. One Category may have many subcategories. Category Id : bigint (PK) Name : nvarchar(255) AcceptQuestions : bit IdParent : bigint (FK) Question Id : bigint (PK) Title : nvarchar(255) ... IdCategory : bigint (FK) How do I recursively count all Questions for a given Category (including questions in subcategories). I've tried it already based on several tutorials but still can't figure it out :(

    Read the article

  • How to provide a fileDownloadName only if the user requests to save the file in ASP.NET MVC?

    - by davekaro
    I've got a controller action that returns a FileResult like this return this.File("file.pdf", "application/pdf"); for the URL "/Download/322" - where 322 is the id of the file. This works great, so that if a user clicks on a link to the PDF - it will open in their web browser as long as they have a PDF plugin installed. But, what if they right-click the link and choose "Save as..."? The browser pops up with the filename as "322." I'd like to have a better filename at this point, by doing something like this: return this.File("file.pdf", "application/pdf", "file.pdf"); But if I change the controller to return like that, then it will always pop up the download box, since MVC is setting the Content-Disposition header to attachment (so I can't embed the file). In summary, can I somehow detect that the user is trying to download the file vs. the file is just being embedded in something on the page?

    Read the article

  • Wierd typeloadexception "Bad flags on delegate constructor."

    - by Marcus
    Hi, Anybody seen this exception before, Google doesn't have a single post regarding the exception. The code that raises the error is a simple add. Items.Add(item); System.TypeLoadException: Bad flags on delegate constructor. at System.Windows.Forms.ListView.Sort() at System.Windows.Forms.ListView.InsertItems(Int32 displayIndex, ListViewItem[] items, Boolean checkHosting) at System.Windows.Forms.ListView.ListViewNativeItemCollection.Add(ListViewItem value) at System.Windows.Forms.ListView.ListViewItemCollection.Add(ListViewItem value)

    Read the article

  • If I'm projecting with linq and not using a range variable what is the proper syntax?

    - by itchi
    I have a query that sums and aggregates alot of data something like this: var anonType = from x in collection let value = collection.Where(c=>c.Code == "A") select new { sum = value.Sum(v=>v.Amount) }; I find it really weird that I have to declare the range variable x, especially if I'm not using it. So, am I doing something wrong or is there a different format I should be following? Also, keep in mind that anonType has about 15 different properties that are all types of aggregates (sums,counts, etc). So I couldn't do something like: int x = collection.Where(c=>c.Code == "A").Sum(v=>v.Amount);

    Read the article

  • Can a function defined in a bookmarklet be called from a page-level script?

    - by Soviut
    I have a bookmarklet that needs to open a new window/tab. In order to avoid the popup blocker, I need to call the window.open() method directly in the bookmarklet ie: at the browser-level. However, I want to keep the bookmarklet updatable by loading external Javascript files. To do this, the bookmarklet needs to append script nodes to the DOM. If i were to put window.open() code in one of these externally loaded scripts, the popup blocker would block it since its page-level. What I want to know is if I can create a wrapper function around window.open() in my bookmarklet, then call it from the externally loaded script? What is the scope and what are the permissions on a wrap such as this?

    Read the article

  • MOSS Sharepoint - Holiday Approval /tracking

    - by nav
    Hi, Has anyone implemented a holiday workflow approval / tracking list in MOSS Sharepoint 2007? Can anyone suggests other solutions? The solution below works fine but I am specifically looking for a way to lookup manager of the user who created the holiday request list item in the workflow. I have followed this link http://www.u2u.info/Blogs/Kevin/Lists/Posts/Post.aspx?ID=39 which shows you how to create a custom workflow approval. Below are the steps outlined by the link. User add new holiday item to list Workflow kicks off Wf has the manager hardcoded (need a way to look this up, maybe from AD??) and creates a Task for them to review the request. If desired, this can include an email notification of the task Manager reviews, adds comments and approves/denies request User is notified of completed request Many Thanks, Naveen

    Read the article

  • Const Functions and Interfaces in C++

    - by 58gh1z
    I'll use the following (trivial) interface as an example: struct IObject { virtual ~IObject() {} virtual std::string GetName() const = 0; virtual void ChangeState() = 0; }; Logic dictates that GetName should be a const member function while ChangeState shouldn't. All code that I've seen so far doesn't follow this logic, though. That is, GetName in the example above wouldn't be marked as a const member function. Is this laziness/carelessness or is there a legitimate reason for this? What are the major cons of me forcing my clients to implement const member functions when they are logically called for?

    Read the article

  • jQuery - disable selected options

    - by Jeffrey
    Need to disable already selected options in select box using jQuery. I'd like it to grey out like asmselect. Test my example here. //JS $("#theSelect").change(function(){ var value = $("#theSelect option:selected").val(); var theDiv = $(".is" + value); theDiv.slideDown().removeClass("hidden"); }); $("div a.remove").click(function () { $(this).parent().slideUp(function() { $(this).addClass("hidden"); }); }); //HTML <body> <div class="selectContainer"> <select id="theSelect"> <option value="">- Select -</option> <option value="Patient">Patient</option> <option value="Physician">Physician</option> <option value="Nurse">Nurse</option> </select> </div> <div class="hidden isPatient">Patient <a href="#" class="remove" rel="Patient">remove</a></div> <div class="hidden isPhysician">Physician <a href="#" class="remove" rel="Patient">remove</a></div> <div class="hidden isNurse">Nurse <a href="#" class="remove" rel="Patient">remove</a></div> </body>

    Read the article

  • Swap CSS class on the basis of Scroll Position with Javascript

    - by Brian
    I'm looking to re-create the Apple Store shopping cart sidebar. http://store.apple.com/us/configure/MB535LL/A?mco=MTA4MTg3NTQ It is similar to "position: fixed" except that it starts out as "position: absolute" with the CSS class "pinned_top" and then switches to CSS class "floating" when a certain scroll-y position is reached. I've looked EVERYWHERE for this, it seems a tutorial should be obvious but I'm yet to find anything. Any help?

    Read the article

  • WPF tooltip best practices

    - by Martin
    I'm about to change my application to include tool tips for all buttons, combo boxes, etc. I was wondering if there are any recommendations on doing this. For every control I'd like the tooltip to show the control's name in bold, followed by the description. I want to keep the style separated from the control, so I can change the tooltip style globally. What I would like to have, unless there's a better suggestion, is two additional fields per button/combobox/etc: 1-ToolTipName and 2-ToolTipDesc, both containing a string. How can I accomplish this (and is it even possible?).

    Read the article

  • How to remove duplicate entries from a mysql db?

    - by Yegor
    I have a table with some ids + titles. I want to make the title column unique, but it has over 600k records already, some of which are duplicates (sometimes several dozen times over). How do I remove all duplicates, except one, so I can add a UNIQUE key to the title column after?

    Read the article

  • C# Inherited member variables behaving undexpectedly

    - by Nilbert
    If I have a class like this: class A { public string fe = "A"; } And a class that inherits from it like so: class B : A { public string fe = "B"; } Visual C++ will tell me that B.fe hides A.fe so I should use the new keyword. So I change class B to look like: class B : A { public new string fe = "B"; } And then I have a function that takes an A (but, by virtue of inheritance, will also take a B) like this: class D { public static void blah(A anAObject) { Console.Writeline(A.fe); } } Even when I pass it an instance of a B object, which it will take without question, it will print "A"! Why is this, and how can I make it work how I want without setting the variable in the constructor?

    Read the article

  • OCUnit testing an embedded framework

    - by d11wtq
    I've added a Unit Test target to my Xcode project but it fails to find my framework when it builds, saying: Test.octest could not be loaded because a link error occurred. It is likely that dyld cannot locate a framework framework or library that the the test bundle was linked against, possibly because the framework or library had an incorrect install path at link time. My framework (the main project target) is designed to be embedded and so has an install path of @executable_path/../Frameworks. I've marked the framework as a direct dependency of the test target and I've added it to the "Link Binary with Libraries" build phase. Additionally I've add a first step (after it's built the dependency) of "Copy Files" which simply copies the framework to the unit test bundle's Frameworks directory. Anyone got any experience on this? I'm not sure what I've missed.

    Read the article

  • Using lambda expressions and linq

    - by Andy
    So I've just started working with linq as well as using lambda expressions. I've run into a small hiccup while trying to get some data that I want. This method should return a list of all projects that are open or in progress from Jira Here's the code public static List<string> getOpenIssuesListByProject(string _projectName) { JiraSoapServiceService jiraSoapService = new JiraSoapServiceService(); string token = jiraSoapService.login(DEFAULT_UN, DEFAULT_PW); string[] keys = { getProjectKey(_projectName) }; RemoteStatus[] statuses = jiraSoapService.getStatuses(token); var desiredStatuses = statuses.Where(x => x.name == "Open" || x.name == "In Progress") .Select(x=>x.id); RemoteIssue[] AllIssues = jiraSoapService.getIssuesFromTextSearchWithProject(token, keys, "", 99); IEnumerable<RemoteIssue> openIssues = AllIssues.Where(x=> { foreach (var v in desiredStatuses) { if (x.status == v) return true; else return false; } return false; }); return openIssues.Select(x => x.key).ToList(); } Right now this only select issues that are "Open", and seems to skip those that are "In Progress". My question: First, why am I only getting the "Open" Issues, and second is there a better way to do this? The reason I get all the statuses first is that the issue only stores that statuses ID, so I get all the statuses, get the ID's that match "Open" and "In Progress", and then match those ID numbers to the issues status field.

    Read the article

  • How can I create an fscanf format string to accept white space and comma (,) tokenization

    - by Jamie
    I've got some analysis code (myprog) that sucks in data using the following: if(5 == fscanf(in, "%s%lf%f%f%f", tag, & sec, & tgt, & s1, & s2)) which works just fine. But in the situation where I've got data files that are separated by commas, I'm currently doing something like: sed 's/,/ /g' data | myprog Can I modify the format string in the fscanf() function to accept both delimitation formats?

    Read the article

  • Bpm audio detection Library

    - by user58815
    I'm looking for a library that simplify tempo/bpm audio detection. Something similar to this http://adionsoft.net/bpm/ , but to use on *NIX machines. Any language, but preference goes to php, perl, python.

    Read the article

  • Lucene.NET performance

    - by Paul Knopf
    I have a website that runs of a third party search provider that is expensive. I am going to roll my own. Is Lucene.NET capable of ~25,000 products (or documents), each with maybe ten attributes used for filtering? I am looking to do a "narrow/drill down" or "faceted search". Does that sound like to much to ask from Lucene.NET?

    Read the article

< Previous Page | 76 77 78 79 80 81 82 83 84 85 86 87  | Next Page >