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  • Get/Set nested property values

    - by Daniel Deer
    I'll try to be more descriptive here. A Few Q's: using: var foo = new Foo() { Bar = new Bar() { Value = "Value" } }; var value = DataBinder.Eval(foo, "Bar.Value"); Or: This one It is possible to retrieve an internal nested property using property path syntax. Is there a way to set/trigger a nested property (a regular property not DependencyProperty) easily with some kind of simple mechanisms as described here? I want to acheive something like: string newValue = "Hello World!"; DataBinder.EvalSet(foo, "Bar.Value", NewValue); Is there any mechanism that support both property path (for nested objects) and XPATHs (if the objects are XPATH navigable of course) ? again, that supports get and set options. Thanks, DD

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  • Swing: set JFrame content area size

    - by igul222
    I'm trying to make a JFrame with a usable content area of exactly 500x500. If I do this... public MyFrame() { super("Hello, world!"); setSize(500,500); } ... I get a window whose full size is 500x500, including the title bar, etc., where I really need a window whose size is something like 504x520 to account for the window border and titlebar. How can I achieve this?

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  • How to validate inclusion of time zone?

    - by LearningRoR
    When I try: validates_inclusion_of :time_zone, :in => TimeZone validates_inclusion_of :time_zone, :in => Time.zone This error appears: "<class:User>": uninitialized constant User::TimeZone (NameError) I'm trying to let users select any time zone of the world but since I'm based in the U.S.A. my select menu is this: <%= f.time_zone_select :time_zone, ActiveSupport::TimeZone.us_zones, {:prompt => "Select Your Time Zone *"}, {:id => "timezone"} %> What's the correct way to do this? Thank you.

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  • Vb net textbox cursor position always 0 after databinding

    - by user1166557
    please help me with the following if you can, i have the simple following command me.textbox1.databindings.clear me.textbox1.databindings.add("text",TicketsBindingSource,"TicketSubject") the command exeutes succesfully and i can see in the textbox the title, BUT once i click on the textbox1 the position of the cursor it's always moving to the position 0 and not to the area of the textbox i clicked. For example my textbox has the following text: "Hello World". If i click with my mouse inside the textbox at the letter W or anywhere i click the cursor is moving to the 0 index. eg. at the beggining , in order to move my cursor left or right i have to do that with my keyboard arrows keys, Dose anybody know how i can solve this issue?

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  • How to know all id's that i have in the file main.xml in android?

    - by sgiro
    Hello guy's, i'm new at Android world, and i have a doubt, is there any method that give me the name of the id's i create in main.xml? For example i have this: main.xml <TextView android:id="@+id/text1" android:layout_width="70px" android:layout_height="70px" android:text="Google" /> <TextView android:id="@+id/text2" android:layout_width="70px" android:layout_height="70px" android:text="As" /> And what i want is the id name from the two TextView, is there any method that i can use in my class .java that give me for this example the id? In this case i want the (text1 and text2). Thanks and forgive mi English.

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  • Using DynamicVertexBuffer in XNA 4.0

    - by Bevin
    I read about DynamicVertexBuffer, and how it's supposed to be better for data that changes often. I have a world built up by cubes, and I need to store the cubes' vertices in this buffer to draw them to the screen. However, not all cubes have vertices (some are air, which is transparent) and not all faces of the cubes need to be drawn either (they are facing each other), so how do I keep track of what vertices are stored where in the buffer? Also, certain faces need to be drawn last, namely the ones with transparency in them (like glass or leaves), and these faces also need to be drawn in a back-to-front order to not mess up the alpha blending. If all of these vertices are stored arbitrarily in this buffer, how do I know what vertices are where? Also, the number of vertices can change, but the DynamicVertexBuffer doesn't seem very dynamic to me, since I can't change it's size at all. Do I have to recreate the buffer every time I need to add or remove faces?

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  • Books on data-intensive enterprise integration patterns

    - by Tristan
    I'm trying to understand design patterns used by data-intensive enterprise applications. A classic example is the financial industry, where system must consume, analyze, and execute on real-time financial data while providing information and configuration options to a broad set of traders and analysts. One can imagine similar system in airlines, major supply chain operations, and utility providers. Are there good books that provide and inside view of how these systems work? Enterprise Integration Patterns is one example, but I'm looking for something with more real-world applications, particularly in finance.

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  • What does :this means in Ruby on Rails?

    - by Marco
    Hi, I'm new to the Ruby and Ruby on Rails world. I've read some guides, but i've some trouble with the following syntax. I think that the usage of :condition syntax is used in Ruby to define a class attribute with some kind of accessor, like: class Sample attr_accessor :condition end that implicitly declares the getter and setter for the "condition" property. While i was looking at some Rails sample code, i found the following examples that i don't fully understand. For example: @post = Post.find(params[:id]) Why it's accessing the id attribute with this syntax, instead of: @post = Post.find(params[id]) Or, for example: @posts = Post.find(:all) Is :all a constant here? If not, what does this code really means? If yes, why the following is not used: @posts = Post.find(ALL) Thanks

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  • Output Unicode to Console Using C++

    - by Jesse Foley
    I'm still learning C++, so bear with me and my sloppy code. The compiler I use is Dev C++. I want to be able to output Unicode characters to the Console using cout. Whenver i try things like: # #include directive here (include iostream) using namespace std; int main() { cout << "Hello World!\n"; cout << "Blah blah blah some gibberish unicode: ÐAßGg\n"; system("PAUSE"); return 0; } It outputs strange characters to the console, like µA¦Gg. Why does it do that, and how can i get to to display ÐAßGg? Or is this not possible with Windows?

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  • Struts2 property tag escapeHtml is not working am I missing something?

    - by user1073570
    The following code is not working correctly. I would like to take the following Java String from the bean String statusMsg = "Hello World! <br/><br/><h3>Test</h3>" And output it with the HTML tags not escaped. <s:property escapeHtml="false" value="bean.statusMsg" The result of this property Tag and String, is that the HTML tags are still being escaped, am I missing something? My goal is to eventually build a table of status data and output it on the page is this the wrong way to use the property tag? Thank you in advance for your help.

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  • Infor PM (Business Intelligence solution)

    - by Andrew
    We are currently implementing the commercial Infor PM (Performance Management) package as a business intelligence tool. Infor PM website It is apparently used by over 1,000 companies around the world, but I have found scant information about it on the net except for what's on their own website. It covers the whole range of data warehousing and BI functions with: an OLAP environment an ETL tool a report writer (called Application Studio) an add-on to Excel to connect to the data in the cubes through a pivot table etc Does anyone have any experience with using this package? How does it compare to the big players in BI (Cognos, Microsoft SSAS, Business Objects, etc). Any pitfalls I should know about? On the other hand, does it do anything better than its competitors?

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  • how to avoid temporaries when copying weakly typed object

    - by Truncheon
    Hi. I'm writing a series classes that inherit from a base class using virtual. They are INT, FLOAT and STRING objects that I want to use in a scripting language. I'm trying to implement weak typing, but I don't want STRING objects to return copies of themselves when used in the following way (instead I would prefer to have a reference returned which can be used in copying): a = "hello "; b = "world"; c = a + b; I have written the following code as a mock example: #include <iostream> #include <string> #include <cstdio> #include <cstdlib> std::string dummy("<int object cannot return string reference>"); struct BaseImpl { virtual bool is_string() = 0; virtual int get_int() = 0; virtual std::string get_string_copy() = 0; virtual std::string const& get_string_ref() = 0; }; struct INT : BaseImpl { int value; INT(int i = 0) : value(i) { std::cout << "constructor called\n"; } INT(BaseImpl& that) : value(that.get_int()) { std::cout << "copy constructor called\n"; } bool is_string() { return false; } int get_int() { return value; } std::string get_string_copy() { char buf[33]; sprintf(buf, "%i", value); return buf; } std::string const& get_string_ref() { return dummy; } }; struct STRING : BaseImpl { std::string value; STRING(std::string s = "") : value(s) { std::cout << "constructor called\n"; } STRING(BaseImpl& that) { if (that.is_string()) value = that.get_string_ref(); else value = that.get_string_copy(); std::cout << "copy constructor called\n"; } bool is_string() { return true; } int get_int() { return atoi(value.c_str()); } std::string get_string_copy() { return value; } std::string const& get_string_ref() { return value; } }; struct Base { BaseImpl* impl; Base(BaseImpl* p = 0) : impl(p) {} ~Base() { delete impl; } }; int main() { Base b1(new INT(1)); Base b2(new STRING("Hello world")); Base b3(new INT(*b1.impl)); Base b4(new STRING(*b2.impl)); std::cout << "\n"; std::cout << b1.impl->get_int() << "\n"; std::cout << b2.impl->get_int() << "\n"; std::cout << b3.impl->get_int() << "\n"; std::cout << b4.impl->get_int() << "\n"; std::cout << "\n"; std::cout << b1.impl->get_string_ref() << "\n"; std::cout << b2.impl->get_string_ref() << "\n"; std::cout << b3.impl->get_string_ref() << "\n"; std::cout << b4.impl->get_string_ref() << "\n"; std::cout << "\n"; std::cout << b1.impl->get_string_copy() << "\n"; std::cout << b2.impl->get_string_copy() << "\n"; std::cout << b3.impl->get_string_copy() << "\n"; std::cout << b4.impl->get_string_copy() << "\n"; return 0; } It was necessary to add an if check in the STRING class to determine whether its safe to request a reference instead of a copy: Script code: a = "test"; b = a; c = 1; d = "" + c; /* not safe to request reference by standard */ C++ code: STRING(BaseImpl& that) { if (that.is_string()) value = that.get_string_ref(); else value = that.get_string_copy(); std::cout << "copy constructor called\n"; } If was hoping there's a way of moving that if check into compile time, rather than run time.

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  • Java Servlet says file does not exist

    - by Austin
    Hello World! I have developed a java servlet that monitors a folder on a network drive for new files then does some actions on them depending on what kind of file it is. It worked in Eclipse when Eclipse and Tomcat were running with each other, but now that I have deployed it onto a server(different machine), the servlet keeps logging that it cannot find the folder to be mapped. The exact same network drive is mapped, and the folder definitely exists. This problem only occurs when the servlet is run on the server, not on the development machine. Thanks! PS: It is a Windows Server 2003 Enterprise Server with Tomcat v6 installed.

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  • Is there a simple library that will render JSON objects as trees?

    - by Robert Gould
    So, is there a VERY simple library that will render JSON objects as trees? I know that this can be done in many ways (such as YUI), but for debug purposes I'd like to simply be able to view a JSON objects I receive from a server as a tree, nothing fancy (but collapsable tree's would be a bonus). The kind of solution I'm looking for would be something like: <script source="something.js"/> <script> obj ={"hello":"world"} lib.renderJSON("someid",obj); </script> ... <div id="someid"/> Any ideas?

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  • How to solve this Java type safety warning? (Struts2)

    - by Nicolas Raoul
    Map session = ActionContext.getContext().getSession(); session.put("user", user); This code generates a warning: Type safety: The method put(Object, Object) belongs to the raw type Map. References to generic type Map should be parameterized. Map<String, Serializable> session = (Map<String, Serializable>)ActionContext.getContext().getSession(); session.put("user", user); This code generates a warning: Type safety: Unchecked cast from Map to Map. The getSession method belongs to Struts2 so I can't modify it. I would like to avoid using @SuppressWarnings because other warnings can be useful. I guess all Struts2 users in the world faced the same problem... is there an elegant solution?

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  • Android emulator-5554 offline

    - by hanesjw
    I'm having a problem with emulator-5554, it keeps telling me it is offline. When I do a 'adb devices' from the command line it says emulator-5554 offline Even after a fresh restart, I try that command and it still says it is offline. The problem is when I try to install .apk files to the emulator using 'abd install path' from the command prompt, it tells me that it is offline, if I create another device and run that one, then try to install the .apk files, it says i have too many devices connected. So in other words, I can't install my .apk files. How in the world can I get rid of that damn emulator-5554? I heard that if you do a restart, it should clear all the devices, but that does not seem to be working. It is like it is getting initialized when my computer starts up. Has anyone run into this issue? Thanks

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  • Simultaneous private and public inheritance in C++

    - by gspr
    Suppose a class Y publicly inherits a class X. Is it possible for a class Z to privately inherit Y while publicly inheriting X? To make this clearer, suppose X defines public methods x1 and x2. Y inherits X, overrides x1 and provides a method y. Does C++ allow for a third class Z to subclass Y in such a way that Y's implementation of x1 and y are privately available to it, while the outside world only sees it inheriting X publicly, i.e. having only a single public method x2?

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  • How to stop jQuery from returning tabs and spaces from formated code on .html() .val() .text() etc.

    - by brandonjp
    I've got an html table: <table><tr> <td>M1</td> <td>M2</td> <td>M3</td> <td>M4</td> </tr></table> and a simple jQ script: $('td').click(function(){ alert( $(this).html() ); }); That works just fine.... but in the real world, I've got several hundred table cells and the code is formatted improperly in places because of several people editing the page. So if the html is: <td> M1 </td> then the alert() is giving me all the tabs and returns and spaces: What can I do to get ONLY the text without the tabs and spaces? I've tried .html(), .val(), .text() to no avail. Thanks!

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  • silverlight application deployment over IIS

    - by Piyush
    I have created an silverlight application (i have not selected my application to be hosted from another web application). Now I created a simple hello world page. I created virtual directory of my silverlight project in IIS for application hosting. 4. When I browse MainPage.xaml in loaclhost, it is not running. I think I shoul run the .xap file to host my application but I dont know haw??? OR Is it necessary to host a silverlight application from a .aspx page??

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  • Casting Class into String and Vice Versa in JAVA

    - by topgun_ivard
    I have a program in which I need to store a Class object into memory by casting it into String. Is it possible to convert the String back into the original Class so that I can use that class variables? I am doing this in JAVA. Example: test.java class hello{ public String h1; public String h2; } public class test { public static void main(String[] args) { hello h = new hello(); h.h1 = "hello"; h.h2 = "world"; String s = h.toString(); System.out.println("Print s : "+s); // Now I need to convert String s into type hello so that // I can do this: // (hello)s.h1; // (hello)s.h2; } } NOTE: this is not a homework, this is a personal project and I would be grateful if anyone can help! Thanks! Ivar

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  • jqGrid: Is it possible to commit a cell change when tabbing off instead of pressing Enter?

    - by The Matt
    I have a simple in-line edit in my grid, and I want to commit the change when the user tabs off the textbox. The default behavior of jqGrid forces the user to press 'Enter' to commit the change, but this is non-intuitive for our users. onSelectRow: function(id) { $(gridCoreGroups).editRow(id, true, undefined, function(response) { alert("hello world"); } } I've worked my way through the events provided, but they all happen as a result of the user pressing 'Enter', which I want to avoid. Is there something I can wire up that would trigger an action when the user tabs off this cell?

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  • Windows based development for ARM processors

    - by user367231
    I am a complete newbie to the ARM world. I need to be able to write C code, compile it, and then download into an ARM emulator, and execute. I need to use the GCC 4.1.2 compiler for the C code compilation. Can anybody point me in the correct directions for the following issues? What tool chain to use? What emulator to use? Are there tutorials or guides on setting up the tool chain?

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  • Is MS Access still the most efficient RAD tool for small-scale custom apps?

    - by FastAl
    Of the many other development tools I've used, nothing holds a candle to the 'Functionality to Development Effort' ratio of MS Access. The reason I am asking is that I have been out of the language selection process for a few years, working on a large .Net system, and am only anecdotally familiar with the latest development tools outside the .Net world. I'm well aware of the limitations of Access, but for a limited concurrency (usually only 1 user at a time), small business, custom app, has anybody found a comparable end-to-end solution or combination that comes close? It doesn't have to be free, open source, or even Windows based. It just has to allow the same speed of development and maintenance, and maybe even provide some additional amenities like seamless autointegration with a server-based DB Engine (like Access does with its own 'Jet' dbms), better web support, and a file format more compatible with source control. I don't want to miss out on anything. Please share your development experience with your suggestions. Thanks.

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  • jquery: add html after a group of divs

    - by Omu
    I have something like this: ... <div id="d120" >content</div> <div id="d123" >content</div> <div id="d112" >content</div> <div id="d145" >content</div> <div id="d134" >content</div> //Insert here hello world <div id="bla" >asd</div> <div id="footer" >asd</div> anybody knows how to insert html after all the divs that have id like d+number

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  • How to link Delphi with C++?

    - by CyberShadow
    cpp.cpp extern "C" char* GetText() { return "Hello, world!"; } delphi.dpr {$APPTYPE CONSOLE} {$LINK 'cpp.obj'} function _GetText: PChar; cdecl; external; begin WriteLn(_GetText); end. I can't get this to work, no matter what I try. I tried various calling conventions, playing with underscores. even creating a .c wrapper for the .cpp code (but then the .c wrapper doesn't "see" any .cpp symbols). I'm about to give up and use DLLs. Any suggestions?

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