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  • Bind handler to Ajax Sys.Component.propertyChanged event

    - by Steven Chalk
    "When you create a client component class, you define the properties that you expect page developers to access. You can also raise Sys.Component.propertyChanged notification events in the set accessors for properties of your component. Page developers who use the component can bind the property notification event to their own handler to run code when the property value changes." From http://www.asp.net/AJAX/Documentation/Live/tutorials/DefiningBindableClientComponent.aspx Does anyone know how to bind a handler to a property changed event when raised from a property accessor. Looked for ages but cannot find an example anywhere showing how you would do this.

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  • Eclipse code template to insert a bookmark?

    - by Mike
    Eclipse has a nifty feature which allows you to define "templates" for code. I have created one to automatically put in a println and add a "TODO" comment. I'd like for this to also add a bookmark so I can easily find it again. (The codebase I am working with makes it unfeasible to use just the Task List to find what I need to do since there are a lot of TODOs laying around.) My current template is simply System.out.println("don't commit me!"); //TODO: fix this ${cursor}.

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  • MySQL query cache and PHP variables

    - by Saif Bechan
    I have seen the following statement made about the query cache: // query cache does NOT work $r = mysql_query("SELECT username FROM user WHERE signup_date >= CURDATE()"); // query cache works! $today = date("Y-m-d"); $r = mysql_query("SELECT username FROM user WHERE signup_date >= '$today'"); So the query cache only works on the second query. I was wondering if the query cache will also work on this: define('__TODAY',date("Y-m-d")); $r = mysql_query("SELECT username FROM user WHERE signup_date >= '".__TODAY."'");

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  • implementing ioctl() commands in FreeBSD

    - by thecoffman
    I am adding some code to an existing FreeBSD device driver and I am trying to pass a char* from user space to the driver. I've implemented a custom ioctl() command using the _IOW macro like so: #define TIBLOOMFILTER _IOW(0,253,char*) My call looks something like this: int file_desc = open("/dev/ti0", O_RDWR); ioctl(file_desc, TIBLOOMFILTER, (*filter).getBitArray()); close(file_desc); When I call ioctl() I get: Inappropriate ioctl for device as an error message. Any guess as to what may be doing wrong? I've defined the same macro in my device driver, and added it to the case statement.

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  • creating managed objects using code in xcode & core-data

    - by themadpeacock
    New to objective-c xcode and core-data so sorry for the remedial question. I have set up a very simple data model: Entity1 and Entity2, both contain a single attribute (String) and a one-to-many relationship with the other. I want to scan Entity1 and depending on the results of the scan create one or more Entity2 objects that link to Entity1. How can I do this? I don’t understand how I create Entity2 type objects in code and how I would define the relationship to the Entity1 object they are related to. I come from a SQL programming background where inserting elements into the Entity2 table with the ID of the related Entiry1 entry is easy. I can’t get my head around the xcode core-data abstraction and would appreciate any help.

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  • Like Html.RenderAction() but without reinstantiating the controller object

    - by Jørn Schou-Rode
    I like to use the RenderAction extension method on the HtmlHelper object to render sidebars and the like in pages, as it allows me to keep the data access code for each such part in separate methods on the controller. Using an abstract controller base, I can define a default "sidebar strategy", which can then be refined by overriding the method in a concrete controller, when needed. The only "problem" I have with this approach, is that the RenderAction is built in a way where it always creates a news instance of the controller class, even when rendering actions from the controller already in action. Some of my controllers does some data lookup in their Initialize method, and using the RenderAction method in the view causes this to occur several times in the same request. Is there some alternative to RenderAction which will reuse the controller object if the action method to be invoked is on the same controller class as the "parent" action?

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  • How do people prove the correctness of Computer Vision methods?

    - by solvingPuzzles
    I'd like to pose a few abstract questions about computer vision research. I haven't quite been able to answer these questions by searching the web and reading papers. How does someone know whether a computer vision algorithm is correct? How do we define "correct" in the context of computer vision? Do formal proofs play a role in understanding the correctness of computer vision algorithms? A bit of background: I'm about to start my PhD in Computer Science. I enjoy designing fast parallel algorithms and proving the correctness of these algorithms. I've also used OpenCV from some class projects, though I don't have much formal training in computer vision. I've been approached by a potential thesis advisor who works on designing faster and more scalable algorithms for computer vision (e.g. fast image segmentation). I'm trying to understand the common practices in solving computer vision problems.

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  • Weird generics compile error.

    - by Jouke van der Maas
    I have two classes, a base class and a child class. In the base class i define a generic virtual method: protected virtual Bar Foo<T() where T : Bar {} Then in my child class i try to do this: protected override BarChild Foo() // BarChild inherits Bar { return base.Bar<T as BarChild() } Visual studio gives this weird error: The type 'T' cannot be used as type parameter 'T' in the generic type or method 'Foo()'. There is no boxing conversion or type parameter conversion from 'T' to 'Bar'. Repeating the where clause on the child's override also gives an error: Constraints for override and explicit interface implementation methods are inherited from the base method, so they cannot be specified directly So what am i doing wrong here?

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  • .NET how to output csv from enumeration of anonymous type?

    - by Ronnie Overby
    Using FileHelpers, I decorated a class with [DelimitedRecord(",")] and was going to output an enumeration of objects of that type as CSV. But, it didn't work because my class inherits from ActiveRecordLinqBase<T>, which caused some problems. So, I was wondering if I could just select an enumeration of anonymous types and somehow have filehelpers generate csv from that. I don't like having to define a class just for FileHelpers to output csv. I would be open to using another csv library, but FileHelpers is proven. EDIT @Foovanadil: This would be the sort of thing I am trying to do: CreateCSV(MyCollection.Select(x=>new{ x.Prop1, x.Prop2, x.Prop3 })); Gives you: Prop1,Prop2,Prop3 val1a,val2a,val3a, val1b,val2b,val3b, etc.....

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  • How to use Mobile Browser Definition File for a Phone vs SmartPhone seperation

    - by Denis Hoctor
    Hi all, I'm looking to revamp our mobile site with something simple for phones below the ambiguous smart phone category and something a little more interesting for the phones above this category. I'm not interested in WAP/WML for this project. I'm building a ASP.Net 4 MCV 2 app and using MBDF What I'd like to know is how best to define this differentiation when using MBDF? Screen size, Javascript, SpportsTouchScreen etc. are all in MBDF along with others but I'm not sure where to draw the line and where the data is most accurate for the broad number of devices. What do those of you out there developing for this spread of hardware & software split on? Thanks, Denis P.S. I've done my research on xHTML MP1.0 - 1.2 and the best practises for implementation to ensure broad coverage but I don't want to restrict the newer phones out there to what the base line can see.

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  • Populating an association with children in factory_girl

    - by Craig Walker
    I have a model Foo that has_many 'Bar'. I have a factory_girl factory for each of these objects. The factory for Bar has an association to Foo; it will instantiate a Foo when it creates the Bar. I'd like a Factory that creates a Foo that contains a Bar. Ideally this Bar would be created through the :bar factory, and respect the build strategy (create/build) used to create the Foo. I know I could just call the :bar factory and then grab the Foo reference from the new Bar. I'd like to avoid this; in my test case, the important object is Foo; calling the Bar factory seems a bit circuitous. Also, I can see the need for a Foo with multiple Bars. Is this possible in factory_girl? How do you define this relationship in the parent?

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  • Ruby on rails link_to syntax

    - by mizipzor
    After following a tutorial Ive found. Im now redoing it again, without the scaffolding part, to learn it better. However, editing my \app\views\home\index.html.erb to contain: <h1>Rails test project</h1> <%= link_to "my blog", posts_path> I get an error: undefined local variable or method `posts_path' for #<ActionView::Base:0x4e1d954> Before I did this, I ran rake db:create, defined a migration class and ran rake db:migrate, everything without a problem. So the database should contain a posts table. But that link_to command cant seem to find posts_path. That variable (or is it even a function?) is probably defined through the scaffold routine. My question now is; how do I do that manually myself, define posts_path?

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  • url template tag in django template

    - by user192048
    guys: I was trying to use the url template tag in django, but no lucky, I defined my urls.py like this urlpatterns = patterns('', url(r'^analyse/$', views.home, name="home"), url(r'^analyse/index.html', views.index, name="index"), url(r'^analyse/setup.html', views.setup, name="setup"), url(r'^analyse/show.html', views.show, name="show"), url(r'^analyse/generate.html', views.generate, name="generate"), I defined the url pattern in my view like this {% url 'show'%} then I got this error message Caught an exception while rendering: Reverse for ''show'' with arguments '()' and keyword arguments '{}' not found. Original Traceback (most recent call last): File "/Library/Python/2.5/site-packages/django/template/debug.py", line 71, in render_node result = node.render(context) File "/Library/Python/2.5/site-packages/django/template/defaulttags.py", line 155, in render nodelist.append(node.render(context)) File "/Library/Python/2.5/site-packages/django/template/defaulttags.py", line 382, in render raise e NoReverseMatch: Reverse for ''show'' with arguments '()' and keyword arguments '{}' not found. I am wondering why django failed to render? what is the right way to define it in the tempalte?

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  • How do I dynamically tell a .NET MVC application which datasource to point to?

    - by Bialecki
    I'm beginning a port of an existing ColdFusion application to .NET MVC and one of the first issues I'm running into is that in ColdFusion we use the fact that you can define multiple datasources and access them in a dynamic way so that a particular user can be pointed at a particular database. To give an example, I might have two databases, Foo and Bar which each have a table called Locations which store locations particular to that database. The databases are guaranteed to have the same tables, so that's not a concern. In ColdFusion, you can easily dynamically point a user towards a particular datasource because it's just a string which is configured via the ColdFusion administrator (or you could programatically modify an XML file). So the question is how to do this in .NET? And specifically, I think I'd really like to use the Entity framework to leverage the ORM support it'll offer to perform operations on the data in the database, but I'm not sure how to do that (hopefully it's possible). Any thoughts?

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  • How to access the theming Fonts and Colors on GTK/Gnome

    - by Lothar
    Lets say i want to write a special text editor widget. How can i get the default themed colors for texts, selected text and background and which are the users default fonts? I see that GNOME does define 5 special system fonts and default sizes for this purpose in the GNOME Appearance Configuration dialog, but i haven't found a single word in the GTK documentation how to access them (and the GTK mailing list is a joke:-( ). Windows and Cocoa both give me dozens of system values. I found the GtkStyle class but this doesn't seem to be what i need.

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  • Creating GUI using XML file in C#

    - by Gal Goldman
    How can I create automatic GUI using XML file in C#? Should I write a parser for the file and define a sort of "protocol" for the file's structure, and after the parse - create the GUI controls manually (respective to the data in the files)? Or is there a better way? Is there a tool, or a built-in code in the .NET environment which can do that for me automatically? (I am currently working with win forms, but I am willing to consider any other technology - as long as it's supported in MONO, since the code should be portable to Linux as well).

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  • How to create a custom ADO Multi Dimensional Catalog with no database

    - by Alan Clark
    Does anyone know of an example of how to dynamically define and build ADO MD (ActiveX Data Objects Multidimensional) catalogs and cube definitions with a set of data other than a database? Background: we have a huge amount of data in our application that we export to a database and then query using the usual SQL joins, groups, sums etc to produce reports. The data in the application is originally in objects and arrays. The problem is the amount of data is so large the export can take 2 hours. So I am trying to figure out a good way of querying the objects in memory, either by a custom OLAP algorithm or library, or ADO MD. But I haven't been able to find an example of using ADO MD without a database behind it. We are using Delphi 2010 so would use ADO ActiveX but I imagine the ADO.NET MD is similar. I realize that if the application data was already stored in a database the problem would solve itself. Also if Delphi had LINQ capability I could query the objects and arrays that way.

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  • Using thrift with PHP and Java

    - by Christopher McCann
    I am getting myself a bit confused about how to go about this. My plan is to use PHP to perform the final page construction and this PHP web app will contact multiple services, which i will also to develop, for the data. Lets say one of those services was done in Java. I would define a Java interface which was implemented by a concrete class. This is where I get confused - how does Thrift link the PHP web app with the java service or am I getting totally mixed up?? Thanks

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  • Source code of books made with TeX/LaTeX to learn

    - by Diego Sevilla
    Some time ago, reading this entry I found a nice image and a pointer to a better book entitled "Thinking Forth". To my surprise, the LaTeX sources of the book were ready to download, with pearls like: %% There's no bold typewriter in Computer Modern. %% Emulate with printing several times, slightly moving \newdimen\poormove \poormove0.0666pt \newcommand{\poorbf}[1]{% \llap{\hbox to \poormove{#1\hss}}% \raise\poormove\rlap{#1\hss}% \lower\poormove\rlap{#1\hss}% \rlap{\hbox to \poormove{\hss}\hbox{#1}}% #1} %\let\poorbf=\textbf \renewcommand{\poorbf}[1]{{\fontencoding{OT1}\fontfamily{cmtt}\fontseries{b}\selectfont#1}} in which it can simulate the bold stroking of a font that doesn't have it. Since reading that, I was unaware of \llap and such, but now I can use them to define boxes, etc. So, my question is twofold: Do you know of sites that show that relatively advanced use of TeX/LaTeX in terms of useful recipes, and Do you know any books that offer their TeX/LaTeX source to inspect and learn (and that are worth doing so.)?

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  • JavaScript private methods

    - by Wayne Kao
    To make a JavaScript class with a public method I'd do something like: function Restaurant() { } Restaurant.prototype.buy_food = function() { // something here } Restaurant.prototype.use_restroom = function() { // something here } That way users of my class can: var restaurant = new Restaurant(); restaurant.buy_food(); restaurant.use_restroom(); How do I create a private method that my public buy_food and use_restroom methods can call but that users of the class can't call externally. In other words, I want my method implementation to be able to do: Restaurant.prototype.use_restroom = function() { this.private_stuff(); } But this shouldn't work: var r = new Restaurant(); r.private_stuff(); How do I define private_stuff as a private method so both of those hold true? I've read Doug Crockford's writeup a few times but it doesn't seem like "private" methods can be called by public methods and "privileged" methods can be called externally.

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  • How do I set the bake command to use a different template in cakephp

    - by Gaurav Sharma
    Hi all, I wanted bake command to bake a view of my liking. So I searched bakery and found this Modify-default-HTML-produced-by-baked-templates. But after reading this I was not able to modify the template because I wanted to define some CSS in it and those files are not containing any CSS code (they contain only php code inside them). Also if I have designed my own CSS file for the new template then how do I tell bake command to pick that specified css file for new template ? I am totally confused over here. Has anybody done this similar kinda work using cakePHP. Any help would be greatly appreciable. NOTE: I am using cakePHP v 1.3 latest stable release. Thanks

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  • Problem wit MDAC when trying to compile in VS2008 using x64 bit target platform

    - by grobartn
    I am trying to compile an 32 bit application. I am aware of problems with it but that is why its being compiled on 64 bit version. I am hanging at this problem. Application uses lots of sql stuff. In sqltypes.h file: (provided by MDAC) #ifdef _WIN64 typedef INT64 SQLLEN; typedef UINT64 SQLULEN; typedef UINT64 SQLSETPOSIROW; #else For some reason when its compiled on 32 bit platform it works great But when I try building it on 64 it goes berserk. Error 61 error C2146: syntax error : missing ';' before identifier 'SQLLEN' ..\external\microsoft sdk\include\sqltypes.h 50 It does not recognize INT64, UINT64. Is there something I need to enable so it will work under 64 build process? Missing some #include or #define? Any help would be great Thanks

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  • Best way to reuse a footer menu in Android

    - by Gunnar Lium
    I'm trying to implement a menu in the footer of an app, similar to i.e. the Engadget app. As I understand, getting a standard TabLayout to work in this way is not trivial (if at all possible?). As I see quite a few apps using this interface paradigm, I would assume there is a clever way of doing it. Currently, I'm defining the layout by adding an include line at the end of every layout. This works fine as far as rendering is concerned, but I have to add the onClickListeners to each activity. can we define clickListener through XML? To sum up my question: What is the best way to implement a shared footer navigation accross several Activities?

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  • memcpy(), what should the value of the size parameter be?

    - by Tomas
    Hi, I want to copy an int array to another int array. They use the same define for length so they'll always be of the same length. What are the pros/cons of the following two alternatives of the size parameter to memcpy()? memcpy(dst, src, ARRAY_LENGTH*sizeof(int)); or memcpy(dst, src, sizeof(dst); Will the second option always work? Regardless of the content? One thing that favors the last one is that if the array were to change, it'll be some house-keeping to update the memcpy()'s. Thanks

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  • Assert parameters in a table-valued UDF

    - by Clay Lenhart
    Is there a way to create "asserts" on the parameters of a table-valued UDF. I'd like to use a table-valued UDF for performance reasons, however I know that certain parameter combinations (like start and end dates that are more than a month apart) will cause performance issues on the server for all users. End users query the database via Excel using UDFs. UDFs (and table-valued UDFs in particular) are useful when the data is too large for Excel. Users write simple SQL queries that categorizes the data into groups to reduce the number of rows. For example, the user may be interested in weekly aggregates rather than hourly ones. Users write a group by SELECT statement to reduce the rows by 24x7=168 times. I know I can write RAISERROR statements in multistatement UDFs, but table-valued UDFs are integrated in the query optimizer so these queries are more efficient with table-valued UDFs. So, can I define assertions on the parameters passed to a table-valued UDF?

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