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  • WPF + MvvM + Prism

    - by 2Fast4YouBR
    Hi all, I am new in the Wpf & Mvvm world , but I have found a couple of examples and just found that there is some different way to instantiate the model. I would like to know the best/correct way to do it. both ways are using Unity What I've foud: var navigatorView = new MainView(); navigatorView.DataContext = m_Container.Resolve<INavigatorViewModel>(); m_RegionManager.Regions["NavigatorRegion"].Add(navigatorView); What I did: var navigatorView = m_Container.Resolve<MainView>; m_RegionManager.Regions["NavigatorRegion"].Add(navigatorView); and I changed the constructor to receive viewmodel so I can point the datacontext to it: public MainView(NavigatorViewModel navigatorViewModel) { this.DataContext = navigatorViewModel; } Other examples I've found another way like: ...vm = new viewmodel ...m = new model v.model = vm; get/set DataContext cheers

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  • jQuery AJAX functions

    - by sundowatch
    I am using jQuery's load() function when getting a page to a div like that: content.php page is : <script type="text/javascript"> $(".content").load("asd.php"); </script> and asd.php is: <script type="text/javascript"> alert("Hello World"); </script> When load ajax finished alert() message appears 3 times. Actually it must appears only 1 time. So load() function get page 3 times. How can I get the page a time?

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  • how to detect datacard connect and disconnect event on win32

    - by Vinayaka Karjigi
    Hi All, I have a data card, as soon as i insert the data card, i am getting the events by using wm_device_change event. But I also want to get event, when my data connect actually connects to out side world. I mean to say, as soon as we click on connect/disconnect button of data card,i want to get the event. exactly speaking wanted to know, when connection is established and disconnected. data card is vodaphone data card and i am trying to browse using that data card. what ever is the SDK, somewhere the OS should get the event of connection and disconnection to network is there any way to access that event which OS is getting. as i can see in notificaiton the changes of vodaphone connection and LAN connection data card is a USB device having SIM within it, and can be used to access internet through GPRS. can i know how to do this in win32 c/c++ programe. with regards Vinayaka Karjigi

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  • Accessing object's method within string

    - by Wild One
    Recently I was reading php documentation and found interesting note in string section: Functions, method calls, static class variables, and class constants inside {$} work since PHP 5. However, the value accessed will be interpreted as the name of a variable in the scope in which the string is defined. Using single curly braces ({}) will not work for accessing the return values of functions or methods or the values of class constants or static class variables. See www.php.net/manual/en/language.types.string.php It says, that I can't use curly syntax to get value returned by object's method call. Is it a mistake in manual or I misunderstood it, because I tried the following code and it works just fine: <?php class HelloWorld { public static function hello() { echo 'hello'; } } $a = new HelloWorld(); echo "{$a->hello()} world";

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  • In PHP: How to call a $variable inside one function that was defined previously inside another funct

    - by Sam
    I'm just starting with Object Oriented PHP and I have the following issue: I have a class that contains a function that contains a certain script. I need to call a variable located in that script within another function further down the same class. For example: class helloWorld { function sayHello() { echo "Hello"; $var = "World"; } function sayWorld() { echo $var; } } in the above example I want to call $var which is a variable that was defined inside a previous function. This doesn't work though, so how can I do this?

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  • What makes Groovy+Grails a more productive setup than J2EE?

    - by Pradyumna
    I'm coming across references to 'Grails' and 'Groovy' quite often these days.. mostly on how great a productivity booster it is as opposed to standard J2EE, or things like JSF, Struts etc.. And there's also an impressive set of case studies in support of this on their web site too. So I just thought I would explore some of it.. As I start off on this, I was curious if there was any material (link, blog, article, paper..) that explains what are the special features in Grails+Groovy (and not found elsewhere, in the J2EE world) that makes it a more productive environment to work in? Thanks!

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  • jQuery .noconflict with prototype not working in (you guessed it) IE.

    - by Kyle Sevenoaks
    On my new customer page, I have successfully implemented a jQuery show/hide toggle alongside a Prototype script using jQuery's .noconflict. (Thanks to all for answers!) But as the world of the net is, IE's not playing ball. {literal} <script src="http://code.jquery.com/jquery-latest.js" type="text/javascript"> </script> <script type="text/javascript"> var $j = jQuery.noConflict(); $j(function() { $j("#button1").click(function() { $j("#show-hide").toggle("slow"); }); });? </script> {/literal} As you all must know by now, I'm just newly coming to all this jQuery stuff, so I have no idea what could cause it. Thanks for any help.

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  • CodeContracts: Possibly calling a method on a null reference

    - by dtb
    I'm having an argument with the CodeContracts static analysis tool. My code: class Foo { private static Foo instance = new Foo(); private string bar; public Foo() { bar = "Hello World"; } public static int BarLength() { return instance.bar.Length; // <<-- } } The tool tells me that instance.bar may be a null reference. I believe the opposite. Who is right? How can I prove it wrong?

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  • class member access specifiers and binary code

    - by pdehaan
    I understand what the typical access specifiers are, and what they mean. 'public' members are accessible anywhere, 'private' members are accessible only by the same class and friends, etc. What I'm wondering is what, if anything, this equates to in lower-level terms. Are their any post-compilation functional differences between these beyond the high-level restrictions (what can access what) imposed by the language (c++ in this case) they're used in. Another way to put it - if this were a perfect world where programmers always made good choices (like not accessing members that may change later and using only well defined members that should stay the same between implementations), would their be any reason to use these things?

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  • Shift from Java to c++

    - by zengr
    Hello, I have been developing applications based on C# (.net) and Java (J2EE) from the last 3 years. But, now I feel, Java, C# makes you lame (from learning point of view) and you can develop your apps quickly but you fail to understand the basic underlying concepts of programming. So, I am trying to learn C++, but I find it a little "confusing" due to pointer, multiple inheritance, some conventions and other concepts of C++ which don't exist in Java. So, what do you guys suggest? How should I got about it? Thanks PS: I am a student, so have all the time in the world and actually shift.

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  • How can I pad part of a string with spaces, in Perl?

    - by sid_com
    Hello! Which version would you prefer? #!/usr/bin/env perl use warnings; use strict; use 5.010; my $p = 7; # 33 my $prompt = ' : '; my $key = 'very important text'; my $value = 'Hello, World!'; my $length = length $key . $prompt; $p -= $length; Option 1: $key = $key . ' ' x $p . $prompt; Option 2: if ( $p > 0 ) { $key = $key . ' ' x $p . $prompt; } else { $key = $key . $prompt; } say "$key$value"

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  • How can I write fast colored output to Console?

    - by Statement
    Hello world! I want to learn if there is another (faster) way to output text to the console application window using C# .net than with the simple Write, BackgroundColor and ForegroundColor methods and properties? I learned that each cell has a background color and a foreground color, and I would like to cache/buffer/write faster than using the mentioned methods. Maybe there is some help using the Out buffer, but I don't know how to encode the colors into the stream, if that is where the color data resides. This is for a retrostyle textbased game I am wanting to implement where I make use of the standard colors and ascii characters for laying out the game. Please help :)

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  • What is the best way to go about obfuscating Java code? [closed]

    - by Waltzy
    Possible Duplicate: Best Java obfuscator ? Well, I'm planning on releasing a Jar into the world but would prefer if the code was not readably available to anyone with a Java Decompiler as I want to control access to the program with usernames / auth codes etc. After some Googling I haven't found any software to do this for me, so I was wondering what steps to take from here; if anyone can point me at any software or information on methodologies of obfuscation I would be grateful. Cheers again Stack Overflow.

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  • MySQL: searh by host name in field containing urls

    - by Silver Light
    Hello! I have this database table: id | url ----------------------------------------- 1 | http://stackoverflow.com/ 2 | http://www.google.com 3 | http://example.com/somepage 4 | https://another.net?id=88 5 | http://hello.org/index.php?hello=2 6 | http://google.com?q=hello+world I need to search all fields, where URL belongs to a certain host. For example, if I give the query 'google.com', it will return rows 2 and 6 (www is ignored). I get the host using PHP parse_url() function. How this SQL query would look like?

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  • What are some good practice assignments for learning Java?

    - by HW
    Hello, I am a computer science in my Student Second year. I already know a good deal about C++, Data Structures, File Structures, OOP, etc. I decided to learn Java. I have read couple of books but I know that it takes practice to master any Programming language. I was wondering if anyone knew of some assignments or problems that helped them become good at programming. I am looking for something more challenging than "hello world"s and "3+2=5"s exercises. Thanks, ~HW

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  • class member access specifiers

    - by pdehaan
    I understand what the typical access specifiers are, and what they mean. 'public' members are accessible anywhere, 'private' members are accessible only by the same class and friends, etc. What I'm wondering is what, if anything, this equates to in lower-level terms. Are their any post-compilation functional differences between these beyond the high-level restrictions (what can access what) imposed by the language (c++ in this case) they're used in. Another way to put it - if this were a perfect world where programmers always made good choices (like not accessing members that may change later and using only well defined members that should stay the same between implementations), would their be any reason to use these things?

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  • How to find out how namespace got polluted?

    - by dehmann
    Consider the following little piece of code: // all of these include other headers, lots of code: #include "myheader1.h" #include "myheader2.h" #include <string> void foo() { string s("hello world"); // oh no, why does this compile?? } This compiles, so obviously some of the recursively included header files has a using namespace std; somewhere. How would you go about finding out where that offending line of code is? Just using grep on all header files won't really work because that statement is often used inside a function, where it is safe and won't pollute the rest of the code.

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  • How to test processing a list of files within a directory using RSpec?

    - by John Topley
    I'm pretty new to the world of RSpec. I'm writing a RubyGem that processes a list of files within a specified directory and any sub-directories. Specifically, it will use Find.find and append the files to an Array for later output. I'd like to write a spec to test this behaviour but don't really know where to start in terms of faking a directory of files and stubbing Find.find etc. This is what little I have so far: it "should return a list of files within the specified directory" do end Any help much appreciated!

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  • Is this possible?

    - by Stud33
    I want to incorporate some Accelerometer code into a Android application im working and want to see if this is possible. Basically what I need is for the code to detect car acceleration motion. I am not wanting to determine speed with the code but just distinguish if the phone is in a car and has accelerated motion (Hence the car is moving for the first time). I have gone through many different accelerometer applications to see if this motion produces a viable profile to go off of and it appears it does. Just looking for something that popups a "Hello World" dialog when it detects your in the car and its moving for the first time down the street. Any help would be appreciated and a simple yes or no its possible would work. I would also be interested in compensating anyone that is capable of doing this as well. I need this done like yesterday so please let me know. Thank You, JTW

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  • How to calculate deceleration rate of a flipping coin (in c)?

    - by Horace Ho
    A flipping coin on table will slow down and drop to the table surface, facing up or down. How can I calculate the flip-per-second declaration rate over time? For example, assuming the coin is at 10 flipping per second when it starts how long will it take to stop? For each second (9, 8, 7, 6 ... 3, 2, 1, stop), how is the flipping rate changed? Friction can be approximated as some real world objects (say, a metallic coin on a wooden table). Thanks!

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  • Know of any open source projects written in C#, that don’t use any other .Net related technologies

    - by AspOnMyNet
    Do you know of any open source code that would go beyond the basic exercises (aka demonstrations of how particular C# construct works), thus a C# code that would have some real world value? I did read similar threads ( http://stackoverflow.com/questions/1391909/as-a-net-beginner-what-should-i-learn-and-where-can-i-find-open-source-projects ) and the sites suggested (like http://www.codeplex.com and http://sourceforge.net), but all the apps I’ve found there are built using C# in conjunction with other technologies ( such as WinForms, Asp.Net, WCF, WPF, F#,Javascript ), while at the moment all I know is C#, a bit of Html and a bit of Ado.Net. I do plan to learn these technologies also, but that could take months while I’d like to create some useful C# apps right now. thanx

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  • Javascript - use to load xml data from URL

    - by spenf
    I have this url with some xml data in it: http://64.182.231.116/~spencerf/union_college/Upperclass_Sample_Menu.xml And I would like to load this xml data into my javascript script so I can parse it. I am using parse.com Javascript SDK, in there cloud code. Here is the code I have tried: Parse.Cloud.define("next", function(request, response) { response.success("Hello world!"); $.ajax({ url: 'http://64.182.231.116/~spencerf/union_college/Upperclass_Sample_Menu.xml', // name of file you want to parse dataType: "xml", // type of file you are trying to read success: parse, // name of the function to call upon success error: function(){alert("Error: Something went wrong");} }); }); But when I run this I get an error: $ is not defined at main.js:

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  • Calling a function when using <button> tag with jQuery Mobile

    - by u2sonderzug
    I already asked a similar question for buttons in tags, but I find that solution doesn't work using tags. So, if I am using a script that references jQuery Mobile I have the following line: <button id="buttonAnswer1" data-inline="true">Click me</button> How would I add a listener for when this button is clicked and lets say call the hello() function? i.e. <button id="buttonAnswer1" data-inline="true">Click me</button> <script> function hello(){ console.log("hello world"); } </script>

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  • C++ file including C header file

    - by fdeslaur
    I need to include a C header file in my C++ project but g++ throws "not declared in this scope" errors. I read that i need to use extern "C" keyword to fix it but it didn't seem to work for me. Here is a dummy example triggering this error. main.cpp: #include <iostream> extern "C" { #include "includedFile.h" } int main() { int a = 2; int b = 1212; std::cout<< "Hello World!\n"; return 0; } includedFile.h #include <stdint.h> enum TypeOfEnum { ONE, TWO, THREE, FOUR = INT32_MAX, }; The error thrown is : $> g++ main.cpp In file included from main.cpp:4:0: includedFile.h:7:9: error: ‘INT32_MAX’ was not declared in this scope FOUR = INT32_MAX, I saw on this post that I may need #define __STDC_LIMIT_MACROS without any success. Any help is welcome!

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  • iPhone Application

    - by user553627
    Hello, Im working on an iPhone project using xcode and i actually have not programmed using objective-c before. So, my problem mainly is that my app crashes whenever i hit the button that it suppose to show a view of the world map. I think the problem is within the last 2 lines of the code but still i cant figure out why ?!! because whenever i comment out the line "[self presemtM.....]" the program doesn't crash. Would appreciate your help! -(IBAction) pushedGo:(id)sender { CLLocationCoordinate2D coord = {37.331689, -122.030731}; MapViewController *mapView = [[MapViewController alloc] initWithCoordinates:coord andTitle:@"Apple" andSubTitle:@"111"]; [self presentModalViewController:mapView animated:YES] [mapView release]; }

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