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• Android App - XML or java

  - by Andrew Cochrane

  Hello - I am currently starting to create an app for a small charity company. But Im not entirely sure how to properly learn how to code for the Android OS. I have searched online for tutorials but most stop at the same stage and only show you how to launch the "helloWorld" app. My question is this: 1) Will using solely XML be sufficient to code an app? Does it require working in partnership with java? 2) Does anyone know of any books, recommended books of course, that break everything down for you step-by-step? Cheers

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• Generating dynamic C# based on textual data into the runtime?

  - by WeNeedAnswers

  Is there a quick and easy way to load textual C# into a program. I would like to load the LINQ from the database as an Expression and run it against some data (SQL or Array/List don't mind). I know I can do it using the C# CodeDom/ExpressionTree builder with Assembly Loading and Creating AppDomains, but this seems very long winded. Is there an easier way. I thought with the advent of .net 3.5 that the ExpressionTree would come to my aid, but I now realise that I have to write a parser to use this. Maybe there is a new trick in 4.0? Something along the lines of a dynamic languages Parse would be great. Any suggestions greatly appreciated.

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• Send mail from a Windows script

  - by Jörgen Lundberg

  I would like to send mail from a script on a Windows Server 2003 Standard Edition. I think the server setup is pretty much out of the box. The mail server is an Exchange one, and when you're on the internal network you can use plain old SMTP. I have done it from my machine with Perl, but unfortunately Perl is not available on the server. Is there an easy way of doing this from a .bat-file or any other way that doesn't require installing some additional software? Edit: Thanks for the quick replies. The "blat" thingie would probably work fine but with wscript I don't have to use a separate binary. I didn't see PhiLho's post the first time I edited and selected an answer. No need for me to duplicate the code here. Just save the script to a file, say sendmail.vbs, and then call it from the command prompt like so: wscript sendmail.vbs

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• Using a singleton database class in functions and multiple scripts(PHP) - best use methods

  - by dscher

  I have a singleton db connection which I get with: $dbConnect = myDatabase::getInstance(); which is easy enough. My question is what is the least rhetorical and legitimate way of using this connection in functions and classes? It seems silly to have to declare the variable global, pass it into every single function, and/or recreate this variable within every function. Is there another answer for this? Obviously I'm a noob and I can work my way around this problem 10 different ways, none of which is really attractive to me. It would be a lot easier if I could have that $dbConnect variable accessible in any function without needing to declare it global or pass it in. I do know I can add the variable to the $_SERVER array...is there something wrong with doing this? It seems somewhat inappropriate to me. Another quick question: Is it bad practice to do this: $result = myDatabase::getInstance()-query($query); from directly within a function?

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• In a process using lots of memory, how can I spawn a shell without a memory-hungry fork()?

  - by kdt

  On an embedded platform (with no swap partition), I have an application whose main process occupies most of the available physical memory. The problem is that I want to launch an external shell script from my application, but using fork() requires that there be enough memory for 2x my original process before the child process (which will ultimately execl itself to something much smaller) can be created. So is there any way to invoke a shell script from a C program without incurring the memory overhead of a fork()? I've considered workarounds such as having a secondary smaller process which is responsible for creating shells, or having a "watcher" script which I signal by touching a file or somesuch, but I'd much rather have something simpler.

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• Avoid application becoming unresponsive on download

  - by baron

  Hi I have an application which downloads a file from a network location and then displays that files information. It uses WebClient.DownloadFile to achieve this. The problem is, when the user clicks a button to start the download, the application becomes unresponsive until the file has downloaded. This gives the impression the application may have hung. I would like to seek ideas which would avoid this scenario. Though my solution will need to be 'as quick and cheap as possible' I would be interested in hearing about custom loaders that have been built, or some sort of loading symbol / progress bar / sand time clock thingy : ) Thanks for reading.

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• What is the flag to show the nesting of views in a Mac app?

  - by theMikeSwan

  I have just spet the last few hours trying to find the flag to use in Terminal to launch an app with the colored outlines around the various view elements to show how they are nested. I know that Matt Gemmell covered it during the Cocoa Face Off session of NSConference 2009 (at about the 13minute mark in the video). Unfortunately I can't actually read what he types and he doesn't speak the exact command. I know it has to be in the Apple docs somewhere but the search system is currently not being of any use. It looks like her just adds -showAllViews YES to the end of the command to open TextEdit but that command has no effect in 10.6.6. I have also tried every other capitalization I can think of as well as using view instead of views. Every command opens TextEdit just fine but doesn't show the colored outlines.

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• How to handle large table in MySQL ?

  - by Frantz Miccoli

  I've a database used to store items and properties about these items. The number of properties is extensible, thus there is a join table to store each property associated to an item value. CREATE TABLE `item_property` ( `property_id` int(11) NOT NULL, `item_id` int(11) NOT NULL, `value` double NOT NULL, PRIMARY KEY (`property_id`,`item_id`), KEY `item_id` (`item_id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci; This database has two goals : storing (which has first priority and has to be very quick, I would like to perform many inserts (hundreds) in few seconds), retrieving data (selects using item_id and property_id) (this is a second priority, it can be slower but not too much because this would ruin my usage of the DB). Currently this table hosts 1.6 billions entries and a simple count can take up to 2 minutes... Inserting isn't fast enough to be usable. I'm using Zend_Db to access my data and would really be happy if you don't suggest me to develop any php side part. Thanks for your advices !

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• VLC helper protocol on Mac OS X

  - by Preben

  Hey everybody, I am trying to add a vlc:// helper protocol on Mac OS X. To register the protocol, I have unsuccessfully been playing around with the MoreInternet PrefPane. What I want to have in my browser is a vlc://someressource.com/audio.mp3, which should launch VLC and add http://someressource.com/audio.mp3 to the playlist (this works fine on Windows and also Linux if I remember correctly). Maybe even just have vlc://http:// so that https would also be supported. I have no idea how to achieve this. I tried making a bash script, which MoreInternet would not accept. Then I tried making an application through Automator with my Bash script embedded. That did not work either, as the Automator application has no "creator code" - whatever that is?! Can any of you guys point me in the right direction? Thanks in advance!

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• Draggble object hides outside content when wrapt in span

  - by Cinaird

  I have a simple CSS problem In this site http://web.cinaird.se/pdf/test.htm I have a draggable images in the top content, I want a span that float on top of the image and for this I need a span containing the image and a span floating on top. So long no problem but now when i drag the image it hides outside the top content. so my question is as follows, how can I wrap a image and a floating span above and still be able to drag it outside the container. I hop I don't have missed something obvious and you have a quick solution, Thanks for your time.

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• Long IF tree with strings

  - by DalGr

  I have a C program which uses Lua for scripting. In order to keep readability and avoid importing several constants within the individual Lua states, I condense a large amount of functions within a simple call (such as "ObjectSet(id, "ANGLE", 45)"), by using an "action" string. To do this I have a large if tree comparing the action string to a list (such as "if(stringcompare(action, "ANGLE") ... else if (stringcompare(action, "X")... etc") This approach works well, and within the program it's not really slow, and is fairly quick to add a new action. But I kind of feel perfectionist. Is there a better way to do this in C? And having Lua in heavy use, maybe there is a way to use it for this purpose? (embedded "chunks" making a dictionary?) Although this part is mostly curiosity.

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• How do I load only a single wordpress post via the url?

  - by Jared

  Hello, We are currently undergoing some reworking of our website - in the meantime, I am looking for a quick a dirty fix. We have wordpress setup, so that no-so-tech-savvy employees can add events, news, etc. However, there are currently sections on our site dedicated to what would be tags in Wordpress. For instance, we have posts in WP with the tag "events." It's easy enough to display all posts with that tag, but I need to do a PHP include on our old site, and only show JUST THE POST. I can use a rss2html tool, but it strips out somethings like necessary tables. So how do Display only a single WP post, without anything else (no menus, settings, no Wp interface) via a URL? I could use a theme that is stripped down (by using something like theme switcher), but I need it to only load that theme once, not be the default theme....

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• MVC Model Binding to a collection where collection does not begin with a 0 index

  - by FloatLeft

  I'm trying to perform remote validation on a property of an item within a collection. The validation works OK on the first item of the collection. The http request to the validation method looks like: /Validation/IsImeiAvailable?ImeiGadgets[0].ImeiNumber=123456789012345 However on the 2nd item where the url looks like below, the validation doesn't work /Validation/IsImeiAvailable?ImeiGadgets[1].ImeiNumber=123456789012345 Now I'm pretty sure the reason for this, is that binding wont work on a collection that doesn't begin with a zero index. My validation method has a signature as below: public JsonResult IsImeiAvailable([Bind(Prefix = "ImeiGadgets")] Models.ViewModels.ImeiGadget[] imeiGadget) Because I'm passing an item within a collection I have to bind like this yet what I'm really passing is just a single value. Is there anyway I can deal with this other than just binding it as a plain old query string. Thanks Edit: This is the quick fix to get the Imei variable but I'd rather use the model binding: string imeiNumber = Request.Url.AbsoluteUri.Substring(Request.Url.AbsoluteUri.IndexOf("=")+1);

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• How do you override an existing html form to use jquery to post the form?

  - by Chris

  I have a simple form that I am currently posting back to the server to update a nickname. What jquery code do I add (without changing the form) so that the page will not refresh, but instead jquery will post the form in the background and then pop up an alert message containing the reply back from the server? <form method="post" action="http://www.myserver.com/update_nickname" name="input"> Quick form to test update_nickname:<br> New nickname:<input type="text" value="BigJoe" name="newNickname"><br> <input type="submit" value="Submit"> </form> <script src="jquery-1.4.2.min.js" type="text/javascript"> </script>

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• Why cant I specify the width and height of a cell in an html table?

  - by Phil

  I am using CSS but for the sake of quick testing i am just using a style tag. This is the code I am trying to implement: echo "<td style='height=10px; width=10px;'>"; it makes sure that the max width of the cell is 10px however the height overflows with the text so becomes very large (high). what I am trying to achieve is any information that is in that cell more than 30 charcters I want to hide so you cant see it. (I know 30 charaters is more than 10px but I am just playing to see if it worked!) Thanks guys.

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• Are there some good and modern alternatives to Javadoc?

  - by ivan_ivanovich_ivanoff

  Let's face it: You don't need to be a designer to see that default Javadoc looks ugly. There are some resources on the web which offer re-styled Javadoc. But the default behaviour represents the product and should be as reasonably good-looking. Another problem is the fact that the usability of Javadoc is not up-to-date compared to other similar resources. Especially huge projects are hard to navigate using Firefox's quick search. Practical question: Are there any standalone (desktop) applications which are able to browse existing Javadoc in a more usable way than a browser would? I'm thinking about something like Mono's documentation browser. Theoretical question: Does anyone know, if there some plans to evolve Javadoc, in a somehow-standardized way? EDIT: A useful link to Sun' wiki on this topic.

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• How to change the default Help browser for VS2010?

  - by Scott Bilas

  Visual Studio 2010 changed the help system to run a little daemon and launch the system default web browser to view it. I'm using Firefox for my system browser but would like to use Chrome for VS help. Is there an option to change the Help browser that I'm not seeing in Tools|Options? If not, is there a workaround or registry setting to do this? As a backup I've been using H3Viewer but I'd like to be able to get context-sensitive F1 help from within the VS IDE.

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• Unexpected cross threading issue

  - by haughtonomous

  I'm trying to do something very simple in principal, but I keep getting a cross-threading exception which has me stumped because I'm not setting out to use multiple threads. I have a Windows Forms application. It launches another Windows Forms application (using the System.Diagnostics.Process class) , and catches the Exited event when that application is closed. My application event handler then tries to copy text from the clipboard to a control on the current displayed form. At this point a Cross-threading exception is thrown. I assume that the problem is that the event from the closing application is in another thread (I'm outside my comfort zone here, so bear with me), so the question boils down to "How do I prevent this exception?" I'm somewhat constrained into having to copy from the clipboard, but I could launch the other application a different way if that would solve the problem.

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• Reallocating memory via "new" in C++

  - by BSchlinker

  Quick question regarding memory management in C++ If I do the following operation: pointer = new char [strlen(someinput_input)+1]; And then perform it again, with perhaps a different result being returned from strlen(someinput_input). Does this result in memory being left allocated from the previous "new" statement? IE, is each new statement receiving another block of HEAP memory from the OS, or is it simply reallocating? Assuming I do a final delete pointer[]; will that deallocate any and all memory that I ever allocated via new to that pointer? Thanks

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• What's the easiest way for a Java Swing client to consumer a webservice?

  - by Stephane Grenier

  I have a Java Swing application client that I want to use to consume certain webservices, but I want to make it as painless as possible to code (because really all I want is the info). I do understand that whatever solution is used will need to stub the POJO's too. If you'd like to give a demo, that would be great, or if you can point to a tutorial that would also be really appreciated. I did look at Axis, including the more recent Axis2, but it's a bit more complex than I was hoping (aka. I have to learn something). At least just for some quick prototype testing and not real development, more for the sake of just saying I can, is there something or a tutorial out there?

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• Is it possible to use the ScalaTest BDD syntax in a JUnit environment?

  - by ebruchez

  I would like to describe tests in BDD style e.g. with FlatSpec but keep JUnit as a test runner. The ScalaTest Quick Start does not seem to show any example of this: http://www.scalatest.org/getting_started_with_junit_4 I first tried naively to write tests within @Test methods, but that doesn't work and the assertion is never tested: @Test def foobarBDDStyle { "The first name control" must "be valid" in { assert(isValid("name·1")) } // etc. } Is there any way to achieve this? It would be even better if regular tests can be mixed and matched with BDD-style tests.

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• Is it possible to use jquery to add numbers taken from mysql?

  - by Scarface

  Hey guys quick question. I have a div that gets assigned a number to its id that is taken from the database on page load. I am trying to use jquery to add 1 to that number but for example if the number was 70 to begin with it just becomes 701. Anyone know what I am doing wrong? echo "<div class=\"total\" id=\"$total\">$total</div>"; var total=$(".total").attr("id"); var newtotal=total+1; $('.total').html(newtotal);

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• How to suppress javascript errors for sites I'm not developing?

  - by Simon_Weaver

  I like to keep javascript debugging enabled in my browser so when I'm developing my own code I can instantly see when I've made an error. Of course this means I see errors on apple.com, microsoft.com, stackoverflow.com, cnn.com, facebook.com. Its quite fun sometimes to see just how much awful code there is out there being run by major sites but sometimes it gets really annoyed. I've wondered for YEARS how to change this but never really got around to it. Its particularly annoying today and I'd really like to know of any solutions. The only solution I have is : use a different browser for everyday browsing. I'm hopin theres some quick and easy plugin someone can direct me to where I can toggle it on and off based upon the domain i'm on. Edit: I generally use IE7 for everyday browsing

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• Why should pop() take an argument?

  - by Stephano

  Quick background I'm a Java developer who's been playing around with C++ in my free/bored time. Preface In C++, you often see pop taking an argument by reference: void pop(Item& removed); I understand that it is nice to "fill in" the parameter with what you removed. That totally makes sense to me. This way, the person who asked to remove the top item can have a look at what was removed. However, if I were to do this in Java, I'd do something like this: Item pop() throws StackException; This way, after the pop we return either: NULL as a result, an Item, or an exception would be thrown. My C++ text book shows me the example above, but I see plenty of stack implimentations taking no arguments (stl stack for example). The Qustion How should one implement the pop function in C++? The Bonus Why?

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• Custom control packaging

  - by CSharpened

  Quick question: You are building a setup for your application. The application contains a custom control developed by you, which will be shared across multiple applications. How should you package the custom control? Package the control in a Merge Module (.msm) and add the .msm file to a Windows Installer project. Package the control into a cabinet project (.cab) and add the .cab file to a Windows Installer project. Create a separate directory for the control and then package it in a Windows Installer project along with the rest of the project files. Package the control as a Web setup project and create a link to that project from the Windows Installer project. Any ideas?

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