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  • what's the job of std::unique_lock when used with std::conditional_variable::wait()

    - by Mike
    I'm quite confused with the need of a std::unique_lock when wait a std::conditional_variable. So I look into the library code in VS 2013 and get more confused. This is how std::conditional_variable::wait() implemented: void wait(unique_lock<mutex>& _Lck) { // wait for signal _Cnd_waitX(&_Cnd, &_Lck.mutex()->_Mtx); } Is this some kind of joke? Wrap a mutex in a unique_lock and do nothing but get it back latter? Why not just use mutex in the parameter list?

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  • can I get .class from generic type argument?

    - by Mike S
    I have the following class: public abstract class MyClass<T extends Object> { protected T createNewFromData(Reader reader){ GSON.fromJSON(reader,T.class); // T.class isn't allowed :( } } How do I pass a Class<T instance into there? Is there some wierd and wacky work around? Is there a way to get a Class<T reference other than from a pre-instantiated Object of type T? It won't let me do this either: T t = new T(); Class<T> klass = t.class; ANSWER BELOW Thanks to the accepted answer, here is the solution: Type type = new TypeToken<T>(){}.getType(); return gson.fromJson(reader, type);

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  • Storing Images

    - by Mike
    Hello All, How to Store Large size Images into iPhone Application? Images are taken from UIImagePickerController but saving into Database and retrieving from Database crash the application.

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  • Creating audit triggers in SQL Server

    - by Mike C.
    I need to implement change tracking on two tables in my SQL Server 2005 database. I need to audit additions, deletions, updates (with detail on what was updated). I was planning on using a trigger to do this, but after poking around on Google I found that it was incredibly easy to do this incorrectly, and I wanted to avoid that on the get-go. Can anybody post an example of an update trigger that accomplishes this successfully and in an elegant manner? I am hoping to end up with an audit table with the following structure: ID LogDate TableName TransactionType (update/insert/delete) RecordID FieldName OldValue NewValue ... but I am open for suggestions. Thanks!

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  • [PHP] What exactly does it mean when $_FILES is empty?

    - by Mike
    I am working on a PHP upload script and when testing my error checks, I attempted to upload a 17MB TIFF file. When I do this the $_FILES array is empty. The script works fine for what I need it to do, which is to upload JPEG files. My solution is to test if $_FILES is empty or not before continuing with the upload script. Can anybody explain why $_FILES is empty when a TIFF is attempted to be uploaded? Is my solution, to check if $_FILES is empty or not, an okay one? Does this have something to do with settings in php.ini?

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  • javascript if statement

    - by mike
    Hi, In javascript, how can I test 2 "sets" of conditions in one if statement? example: if ((a == 'someValue' && b == 'someValue') || (c == 'someValue' && d == 'someValue')) { // do something } Thanks!

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  • Problem with C++ classes

    - by Mike
    I have a class defined called extBlock. I then make an instance of that class with this extBlock mainBlock = new extBlock(1, 1024); I get this error: error C2440: 'initializing' : cannot convert from 'extBlock *' to 'extBlock' Can anyone help me with why I am getting this error. I have seen examples online of declaring it like this with a pointer extBlock *mainBlock = new extBlock(1, 1024); But if I do it this way it does not let me call the functions of mainBlock

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  • Check string for link

    - by Mike
    I have rather long entries being submitted to a database. How can I create a function to see if this entry has a link within it? Can someone get me started? Pretty much, I want the function to find any I'd prefer not to throw the entry into an array. Are there any other ways to accomplish this?

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  • C# string to combobox issues

    - by Mike
    What i'm trying to do is read in a header row of a file to a combobox. Here is my code: private void button4_Click(object sender, EventArgs e) { string[] startdelim = File.ReadAllLines(textBox1.Text); int counter = 1; foreach (string delim in startdelim) { if (counter == 1) { string removedelim = delim.Replace("\"", ""); string[] lines = removedelim.IndexOf(","); foreach (string line in lines) { comboBox1.Items.Add(line); } } counter++; } for some reason it keeps telling me Error Cannot implicitly convert type 'int' to 'string[]' at string[] lines = removedelim.IndexOf(",");

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  • Do i need a hashtag in Javascript to pass as a Div

    - by Mike
    How do i insert this php DivSomething into Javascript? Since Javascript needs a hashtag to recognize that as a div. Is there a way to tell JS that this is a Div or there's other better way to do it? Any help would be very much appreciated. <script> /*How do i insert a var DivSomething into JS with a hashtag */ /* DivSomething is php dynamic. It returns a Div. It can be #Div1, #Div2, #Div3... */ var DivSomething = '<?php echo $Highlight; ?>' $(function() { $('#MouseHere').hover(function() { $('#' + DivSomething).css('background-color', '#ffffff'); }, function() { // on mouseout, reset the background colour $('#' + DivSomething).css('background-color', ''); </script>

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  • Index outof range? Automatica generate field .How to manipulate GridView2.Columns as BoundField;

    - by mike
    Index outof range?GridView2.Columns[6] as BoundField I use Automatica generate field . How to manipulate GridView2.Columns as BoundField with auto-generate feather? JobPostDataContext db = new JobPostDataContext(); var query = from j in db.JobLists join u in db.UserLists on j.UserID equals u.UserID where j.JobTitle.Contains(this.TextBox1.Text) select new { j.JobID, j.JobTitle, j.Summary, j.Details, j.CompanyName, j.CompanyEmail, j.DatePosted, j.UserID, u.City, u.State, u.Country }; GridView2.DataSource = query; GridView2.DataBind(); BoundField DatePosted = GridView2.Columns[6] as BoundField; DatePosted.DataFormatString = "{0:MMM,dd yy}";

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  • What does the `new` keyword do

    - by Mike
    I'm following a Java tutorial online, trying to learn the language, and it's bouncing between two semantics for using arrays. long results[] = new long[3]; results[0] = 1; results[1] = 2; results[2] = 3; and: long results[] = {1, 2, 3}; The tutorial never really mentioned why it switched back and forth between the two so I searched a little on the topic. My current understanding is that the new operator is creating an object of "array of longs" type. What I do not understand is why do I want that, and what are the ramifications of that? Are there certain "array" specific methods that won't work on an array unless it's an "array object"? Is there anything that I can't do with an "array object" that I can do with a normal array? Does the Java VM have to do clean up on objects initialized with the new operator that it wouldn't normally have to do? I'm coming from C, so my Java terminology, may not be correct here, so please ask for clarification if something's not understandable.

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  • jquery ui - making dialogs more "dynamic" ?

    - by mike
    Hello, I have a page that uses multiple dialogs for different things. Some dialogs may have buttons that others do not while other may need to be a different height than another... All of them have a set of params that will not change. My question, can I have a default like: $('.someElement').dialog({ width: 999, show: 'slide', hide: 'slide', ETC: 'some other option' }); and use it for all of my dialogs, then pass buttons or height to it dynamically when I open a dialog? It just seems wrong to have something like the above for every dialog I need... Thanks!

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  • visual studio 2008 , asp.net mvc

    - by mike
    Hello I was wondering how to get the starter template for asp.net mvc showing in vs2008 I currently have mvc installed , have been working with VS2010 but need to create a separate project for VS2008. How can I get the MVC template showing up for VS2008

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  • PHP make all possible variants of 4char A-Z,a-z,0-9

    - by Mike
    I have to make a list of all possible permurations of 4characters A-Z,a-z,0-9 and conbination of all this.How can i pass thru all of the possible combinations and printf them ? what's it for:I need to make this in a html document that i can then print and give all this as random unique usernames for our university, so that students can provide feedback based on one unique id that will be invalidated when used. i can not change this procedure into a better one!

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  • Question about <foreach> task and the failonerror attribute?

    - by Mike M
    Hi guys, I have made a build file for the automated compilation of Oracle Forms files. An excerpt of the code is as follows: <target name="build" description="compiles the source code"> ... <foreach item="File" property="filename" failonerror="false" > <in> <items basedir="${source.directory}\${project.type}\Forms"> <include name="*.fmb" /> </items> </in> <do> <exec program="${forms.path}" workingdir="${source.directory}\${project.type}\Forms" commandline="module=${filename} userid=${username}/${password}@${database} batch=yes module_type=form compile_all=yes window_state=minimize" /> </do> </foreach> ... </target> The build file navigates to the directory containing the forms that the user desires fo compile and attempts to compile each form. The failonerror attribute is set to false so that the build file does not exit if a compilation error occurs. Unfortunately, however, though this prevents the build file from exiting when a compilation error occurs, it also appears to make the build file exit the task. This is a problem because, unless the form that does not compile successfully is the last to be tested (based on the filename of the form in alphanumerical decsending order), there will be one or more forms that the build file does not attempt to compile. So, for example, if the folder containing the forms that are desired to be compiled contains 10 forms and the first form does not compile successfully, the build file will not attempt to compile the remaining 9 forms (ie exit the task). Is there a way to make the build file attempt to compile remaining forms after encountering after failing to compile a form? Thanks in advance!

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  • What to do with "Default Web Site" on a Japanese OS? (E.G: ??? Web ???)

    - by Mike Atlas
    I'm currently in the process of upgrading old II6 automation scripts that use the iisvdir tool to create/modify/update apps and virtual directories. The IIS6 "iisvdir" commands reference paths in IIS6 that are from the metabase, eg, "/W3SVC/1/ROOT/MyApp" - where 1 is the "Default" website. The command doesn't actually require the display name of the site to make changes to it. With an English OS, the "Default Web Site" site name is fine for usage in AppCmd, but if the OS is Japanese, it will be named: "??? Web ???" So how can I script AppCmd to refer to sites, vdirs and apps using language neutral identifiers to reference the "Default App Site"? (Disclosure: I only have a IIS7-English machine that I am working on currently, but I have both IIS6-English and IIS6-Japanese machines for testing my old scripts - so perhaps it really is just "Default Web Site" still on Win2k8-Japanese?)

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  • ActionResult types in MVC2

    - by rajbk
    In ASP.NET MVC, incoming browser requests gets mapped to a controller action method. The action method returns a type of ActionResult in response to the browser request. A basic example is shown below: public class HomeController : Controller { public ActionResult Index() { return View(); } } Here we have an action method called Index that returns an ActionResult. Inside the method we call the View() method on the base Controller. The View() method, as you will see shortly, is a method that returns a ViewResult. The ActionResult class is the base class for different controller results. The following diagram shows the types derived from the ActionResult type. ASP.NET has a description of these methods ContentResult – Represents a text result. EmptyResult – Represents no result. FileContentResult – Represents a downloadable file (with the binary content). FilePathResult – Represents a downloadable file (with a path). FileStreamResult – Represents a downloadable file (with a file stream). JavaScriptResult – Represents a JavaScript script. JsonResult – Represents a JavaScript Object Notation result that can be used in an AJAX application. PartialViewResult – Represents HTML and markup rendered by a partial view. RedirectResult – Represents a redirection to a new URL. RedirectToRouteResult – Represents a result that performs a redirection by using the specified route values dictionary. ViewResult – Represents HTML and markup rendered by a view. To return the types shown above, you call methods that are available in the Controller base class. A list of these methods are shown below.   Methods without an ActionResult return type The MVC framework will translate action methods that do not return an ActionResult into one. Consider the HomeController below which has methods that do not return any ActionResult types. The methods defined return an int, object and void respectfully. public class HomeController : Controller { public int Add(int x, int y) { return x + y; }   public Employee GetEmployee() { return new Employee(); }   public void DoNothing() { } } When a request comes in, the Controller class hands internally uses a ControllerActionInvoker class which inspects the action parameters and invokes the correct action method. The CreateActionResult method in the ControllerActionInvoker class is used to return an ActionResult. This method is shown below. If the result of the action method is null, an EmptyResult instance is returned. If the result is not of type ActionResult, the result is converted to a string and returned as a ContentResult. protected virtual ActionResult CreateActionResult(ControllerContext controllerContext, ActionDescriptor actionDescriptor, object actionReturnValue) { if (actionReturnValue == null) { return new EmptyResult(); }   ActionResult actionResult = (actionReturnValue as ActionResult) ?? new ContentResult { Content = Convert.ToString(actionReturnValue, CultureInfo.InvariantCulture) }; return actionResult; }   In the HomeController class above, the DoNothing method will return an instance of the EmptyResult() Renders an empty webpage the GetEmployee() method will return a ContentResult which contains a string that represents the current object Renders the text “MyNameSpace.Controllers.Employee” without quotes. the Add method for a request of /home/add?x=3&y=5 returns a ContentResult Renders the text “8” without quotes. Unit Testing The nice thing about the ActionResult types is in unit testing the controller. We can, without starting a web server, create an instance of the Controller, call the methods and verify that the type returned is the expected ActionResult type. We can then inspect the returned type properties and confirm that it contains the expected values. Enjoy! Sulley: Hey, Mike, this might sound crazy but I don't think that kid's dangerous. Mike: Really? Well, in that case, let's keep it. I always wanted a pet that could kill me.

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  • Silverlight Cream for January 30, 2011 -- #1037

    - by Dave Campbell
    In this Issue: Ollie Riches, Colin Eberhardt, Andrej Tozon, Arik Poznanski, Deborah Kurata(-2-), Jay Kimble, Yochay Kiriaty, Peter Kuhn, Mike Ormond, WindowsPhoneGeek(-2-), and Matthias Shapiro. Above the Fold: Silverlight: "Missing Chart Legend" Deborah Kurata WP7: "XNA for Silverlight developers: Part 2 - Text rendering" Peter Kuhn Shoutouts: Timmy Kokke has a post up discussing What’s new in the Expression Design January 2011 preview? From SilverlightCream.com: WP7Contrib: Thread safe ObservableCollection<T> Ollie Riches, one of the two originators of WP7Contrib, has a post up on the WP7C ObservableCollection... what and why. Windows Phone 7 DeferredLoadContentControl Colin Eberhardt's latest is one we should all take notice of... a content control that defers rendering to provide a better user experience... source code is available as are some good external links Andrej Tozon on Hey weigh! WP7 application SilverlightShow interviews WP7 Dev Andrej Tozon and gets his take on his app, challenges, tips, and the future of WP7. A ProgressBar With Text For Windows Phone 7 Arik Poznanski demonstrates putting text up on the progress bar to let your users know what you're up to... and it looks great in the screenshots. Charting in a Silverlight Application using MVVM Deborah Kurata is checking out the Charting control this time around... using the charting control from the toolbox in the MVVM app she built in the last post... C# and VB code as always. Missing Chart Legend Deborah Kurata's latest in the world of Charting and MVVM involves using a custom theme and having your chart legend disappear... never fear, she's gonna tell you how to fix that! Silverlight/WP7 tip: Detecting when in VS Design Mode Jay Kimble has a post up that not only resolves a question you may need answered during development (are you in VS design Mode), but it also helps resolve a class of problem that Jay explains. Windows Phone GPS Emulator Yochay Kiriaty points out that while part of the issues of building a GPS-driven app for WP7 is getting your head around the tools, the next hurdle is testing... and that's what he's really discussing... "Windows Phone GPS Emulator" ... if you're playing with the GPS, you'll want this. XNA for Silverlight developers: Part 2 - Text rendering Peter Kuhn's latest tutorial in his XNA series for Silverlight developers is up at SilverlightShow... in this tutorial, Peter discusses text... it's a vastly different game displaying text in XNA as compared to Silverlight ... check it out and see. OData and Windows Phone 7 Mike Ormond starts you off using OData on your WP7 by showing where to download the libraries, and not stopping until he has an app running that reads an OData feed, plus he plans on continuing the quest in future posts. WP7 ProgressOverlay control in depth: features and customization WindowsPhoneGeek has a couple new posts up. The first one is an in-depth look at the ProgressOverlay control in the Codeing4fun Toolkit... pretty cool to be able to put your logo or app logo up. On Testing Windows Phone 7 Applications – Part II: Dealing with the WP7 Application Model WindowsPhoneGeek also has 5 more WP7 testing tips... and these are a little more technical than the first set, and includes some good external links. Topics include: Tombstoning, Usability, Navigation, Capabilities, and Memory consumption. Fun Theme-Friendly Windows Phone Icon Matthias Shapiro explains how to have your WP7 icon change based on the theme your user has chosen... great examples, and XAML included Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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