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• wireless router - configuring for low-latency, high traffic environment

  - by Mark C

  Hey all, I have a few questions about configuring a router to achieve low-latency, high speed throughput on a local area network that is not connected to the internet. I've read up on some stuff, but thought I would solicit some opinions here on what I've found and what I want to know.... Turn off SSID broadcast - it produces extraneous packets that all clients receive and reply (?) to. Not a huge deal, but it may help a bit. Mixed-mode off - I should attempt to have all devices using the same standard (e.g. 802.11n) and turn mixed-mode off. Any thoughts on security? Does having WEP or any of the WPA variants actually increase latency? Nothing super secure is going over this LAN so if turning security off made things better, that'd be cool. Any other thoughts or things to focus on to create the low latency environment I'm trying to go for would be great. Links to webpages and papers are also cool. I'm open to go through a bunch of stuff. Thanks in advance!

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• WPF - How to bind a DataGridTemplateColumn

  - by Andy T

  Hi, I am trying to get the name of the property associated with a particular DataGridColumn, so that I can then do some stuff based on that. This function is called when the user clicks context menu item on the column's header... This is fine for the out-of-the-box ready-rolled column types like DataGridTextColumn, since they are bound, but the problem is that some of my columns are DataGridTemplateColumns, which are not bound. private void GroupByField_Click (object sender, RoutedEventArgs e){ MenuItem mi = (MenuItem)sender; ContextMenu cm = (ContextMenu) mi.Parent; DataGridColumnHeader dgch = (DataGridColumnHeader) cm.PlacementTarget; DataGridBoundColumn dgbc = (DataGridBoundColumn) dgch.Column; Binding binding = (Binding) dgbc.Binding; string BoundPropName = binding.Path.Path; //Do stuff based on bound property name here... } So, take for example my 'Name' column... it's a DataGridTemplateColumn (since it has an image and some other stuff in there). Therefore, it is not actually bound to the 'Name' property... but I would like to be, so that the above code will work. My question is two-part, really: 1) Is it possible to make a DataGridTemplateColumn be BOUND, so that the above code would work? Can I bind it somehow to a property? 2) Or do I need to something entirely different, and change the code above? Thanks in advance! AT

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• How do you keep all your languages straight?

  - by Chris Blackwell

  I think I'm going a little crazy. Right now, I'm working with the following languages (I was just doing a mental inventory): C++ - our game engine Assembler - low level debugging and a few co-processor specific routines Lua - our game engine scripting language HLSL - for shaders Python - our build system and utility tools Objective C/C++ - game engine platform code for Mac and iPhone C# - A few tools developed in our overseas office ExtendScript - Photoshop exporting tools ActionScript - UI scripting VBScript - some spreadsheet related stuff PHP - some web related stuff SQL - some web and tool related stuff On top of this are the plethora of API's that often have many different ways of doing the same thing: std library, boost, .NET, wxWidgets, Cocoa, Carbon, native script libraries for Python, Lua, etc, OpenGL, Direct3d, GDI, Aqua, augh! I find myself inadvertently conflating languages and api's, not realizing what I'm doing until I get syntax errors. I feel like I can't possibly keep up with it, and I can't possibly be proficient in all of these areas. Especially outside the realm of C++ and Python, I find myself programming more by looking at manuals that from memory. Do you have a similar problem? Ideas for compartmentalizing so you're more efficient? Deciding where you want to stay proficient? Organizational tips? Good ways to remember when you switch from Lua to C++ you need to start using semi-colons again? Rants on how complicated we programmers have made things for ourselves? Any ideas welcome!

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• Java SwingWorker still uses 98% CPU after it's done.

  - by RemiX

  I am new to the Java SwingWorker class, but I'm trying to get it to do some stuff in the background. That part works already, but now, when it is finished, the Windows Task Manager still shows that 70-98% of the CPU is still being used. Before I hit the 'Start' button it is only 3-15% and after I close the program it returns to those values. But what is still happening when the SwingWorker already reported being done?? I'll give you a simplified version of my code: I have this StereoProcessor extending SwingWorker, with doInBackground(): yLoop for(some values y) { for(some values x) { if(isCancelled()) break yLoop; else { setProgress(to some value); // do some non-SingWorker-related stuff } } } return returnValue; I call to this process through another code: stereoProcessor.addPropertyChangeListener(new PropertyChangeListener() { public void propertyChange(PropertyChangeEvent evt) { if(evt.getPropertyName().equals("state")) if(evt.getNewValue().equals(StereoProcessor.StateValue.DONE) { // do stuff } } } }); stereoProcessor.computeSomething(); // this method calls execute() That's about it, so I don't understand what it keeps doing. I tried putting some System.outs in the code in different places, but all stopped printing after a while. Does anyone know what's going on? Edit: I noticed the CPU also keeps running after a simple call to a method in StereoProcessor that doesn't even call execute()...

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• Create your own custom browser

  - by ShoX

  Hi, I want to shape my own browser or at least modify a existing one so far that it meets my needs. I want a fast browser (starting and running, not necessarily faster rendering) without any stuff I don't use and simple productive navigation (like Firefox + Vimperator + Tree Style Tab), only much more integrated into each other and a different GUI. I was thinking about just looking into the current two top browsers chrome and firefox (open-source wise) and branch my own smaller version out of it. By just using WebKit or Gecko I will have to implement all the Connection-stuff, too, but I really am not interested in doing that. So my questions are: Does it make sense to start off with a current browser and strip off certain features and the frontend and replace it with my own code? Chrome or Firefox? Which one is less complex? I don't care much about Plugins and Extensions, so they aren't they pretty much even in features otherwise? Thanks for your answers p.s.: It's a just-for-fun at-home project, so please no "just use the browsers..."-stuff...

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• .NET 4 RTM MetadataType attribute ignored when using Validator

  - by bart

  I am using VS 2010 RTM and trying to perform some basic validation on a simple type using MetadataTypeAttribute. When I put the validation attribute on the main class, everything works. However, when I put it on the metadata class, it seems to be ignored. I must be missing something trivial, but I've been stuck on this for a while now. I had a look at the Enterprise Library validation block as a workaround, but it doesn't support validation of single properties out of the box. Any ideas? class Program { static void Main(string[] args) { Stuff t = new Stuff(); try { Validator.ValidateProperty(t.X, new ValidationContext(t, null, null) { MemberName = "X" }); Console.WriteLine("Failed!"); } catch (ValidationException) { Console.WriteLine("Succeeded!"); } } } [MetadataType(typeof(StuffMetadata))] public class Stuff { //[Required] //works here public string X { get; set; } } public class StuffMetadata { [Required] //no effect here public string X { get; set; } }

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• Change DIV contents on SELECT change

  - by Ian Batten

  I'm looking for a method of how to change the contents of a div when an option on a select dropdown is selected. I came across the following: <script type="text/javascript" src="jquery.js"></script> <!-- the select --> <select id="thechoices"> <option value="box1">Box 1</option> <option value="box2">Box 2</option> <option value="box3">Box 3</option> </select> <!-- the DIVs --> <div id="boxes"> <div id="box1"><p>Box 1 stuff...</p></div> <div id="box2"><p>Box 2 stuff...</p></div> <div id="box3"><p>Box 3 stuff...</p></div> </div> <!-- the jQuery --> <script type="text/javascript" src="path/to/jquery.js"></script> <script type="text/javascript"> $("#thechoices").change(function(){ $("#" + this.value).show().siblings().hide(); }); $("#thechoices").change(); </script> This worked fine on it's own, but I want to use it with the following script: http://www.dynamicdrive.com/dynamicindex1/chainedmenu/index.htm When using it alongside this chainedmenu script, it just loads all of the DIV box contents at once, rather than each div option when a SELECT option is chosen. Any ideas on what I can use alongside this chainedmenu script to get different DIV contents to show for different SELECT options? Thanks in advance, Ian EDIT Here is a test page: http://freeflamingo.com/t/new.html

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• ASP MVC Ajax Controller pattern?

  - by Kevin Won

  My MVC app tends to have a lot of ajax calls (via JQuery.get()). It's sort of bugging me that my controller is littered with many tiny methods that get called via ajax. It seems to me to be sort of breaking the MVC pattern a bit--the controller is now being more of a data access component then a URI router. I refactored so that I have my 'true' controller for a page just performing standard routing responses (returing ActionResponse objects). So a call to /home/ will obviously kick up the HomeController class that will respond in the canonical controller fashion by returning a plain-jane View. I then moved my ajax stuff into a new controller class whose name I'm prefacing with 'Ajax'. So, for example, my page might have three different sections of functionality (say shopping cart or user account). I have an ajax controller for each of these (AjaxCartController, AjaxAccountController). There is really nothing different about moving the ajax call stuff into its own class--it's just to keep things cleaner. on client side obviously the JQuery would then use this new controller thusly: //jquery pseudocode call to specific controller that just handles ajax calls $.get('AjaxAccount/Details'.... (1) is there a better pattern in MVC for responding to ajax calls? (2) It seems to me that the MVC model is a bit leaky when it comes to ajax--it's not really 'controlling' stuff. It just happens to be the best and least painful way of handling ajax calls (or am I ignorant)? In other words, the 'Controller' abstraction doesn't seem to play nice with Ajax (at least from a patterns perspective). Is there something I'm missing?

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• jsf and huge web site

  - by darko petreski

  Hi All, I need to program a very huge web site. The site should contain public part with search engine, user registration forms, cart and all other stuff. The private part should contain administrative web application with a lot of data grids, complex edit forms, security checks, services and so on. Also I need very good support for html mailing and pdf exports. Web services are also required. I am considering to use jsf. Can you recommend me books or other stuff where I can find all this info for building what i need? Is seam good option for this? I have looked their site and page seam on production. The sites listed there are far from professional and enterprise. Is there any book that explains how to build complete web site with jsf technology from login, security, sending mails, pdf conversion, time dependent background processes and everything else that big sites needs. I do not have time reading 20 books. In every php book all this stuff is explained but I have not seen a single java book that at least from high view will explain all of this. Regards

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• Preventing iframe caching in browser

  - by Zarjay

  How do you prevent Firefox and Safari from caching iframe content? I have a simple webpage with an iframe to a page on a different site. Both the outer page and the inner page have HTTP response headers to prevent caching. When I click the "back" button in the browser, the outer page works properly, but no matter what, the browser always retrieves a cache of the iframed page. IE works just fine, but Firefox and Safari are giving me trouble. My webpage looks something like this: <html> <head><!-- stuff --></head> <body> <!-- stuff --> <iframe src="webpage2.html?var=xxx" /> <!-- stuff --> </body> </html> The var variable always changes. Despite the fact that the URL of the iframe has changed (and thus, the browser should be making a new request to that page), the browser just fetches the cached content. I've examined the HTTP requests and responses going back and forth, and I noticed that even if the outer page contains <iframe src="webpage2.html?var=222" />, the browser will still fetch webpage2.html?var=111. Here's what I've tried so far: Changing iframe URL with random var value Adding Expires, Cache-Control, and Pragma headers to outer webpage Adding Expires, Cache-Control, and Pragma headers to inner webpage I'm unable to do any JavaScript tricks because I'm blocked by the same-origin policy. I'm running out of ideas. Does anyone know how to stop the browser from caching the iframed content?

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• Rails: Ajax: Changes Onload

  - by Jay Godse

  Hi. I have a web layout of a for that looks something like this <html> <head> </head> <body> <div id="posts"> <div id="post1" class="post" > <!--stuff 1--> </div> <div id="post2" class="post" > <!--stuff 1--> </div> <!-- 96 more posts --> <div id="post99" class="post" > <!--stuff 1--> </div> </div> </body> </html> I would like to be able to load and render the page with a blank , and then have a function called when the page is loaded which goes in and load up the posts and updates the page dynamically. In Rails, I tried using "link_to_remote" to update with all of the elements. I also tweaked the posts controller to render the collection of posts if it was an ajax request (request.xhr?). It worked fine and very fast. However the update of the blank div is triggered by clicking the link. I would like the same action to happen when the page is loaded so that I don't have to put in a link. Is there a Rails Ajax helper or RJS function or something in Rails that I could use to trigger the loading of the "posts" after the page has loaded and rendered (without the posts)? (If putsch comes to shove, I will just copy the generated JS code from the link_to_remote call and have it called from the onload handler on the body).

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• Minimizing SpringLdap dependencies.

  - by mP

  I would like to use SpringLDAP to do some simple username/password verification for authentication purposes. WHile the actual jar file is quite small (less than 1 meg) it seems to have a lot of dependencies as listed by link text. By alot i mean it seems to suck in over 50 things many which dont seem right such as spring-jdbc as I dont want any jdbc and only the ldap template class and its bare dependencies. Without wasting too much time is it possible to the spring-ldap with only a bare minimum number of dependencies which amount to something like: spring core spring ldap whatever logging deps they require. spring tx I dont see or appreciate why the rest of thes tuff is reuqired and was wondering can anyone verify they arent really needed in the end if one sticks to the basics. The other stuff i am referring too include: spring-orm // no jdbc beans // i dont want ioc. spring-aop // no need for aop. I intend to wire up the beans i will be using manually. I dont want more crap in there for what ammounts to setting a few properties, and want confirmation that I dont need what is probably there just to do the ioc stuff when all i want is the ldap stuff.

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• How do I do nested transactions in NHibernate?

  - by Gavin Schultz-Ohkubo

  Can I do nested transactions in NHibernate, and how do I implement them? I'm using SQL Server 2008, so support is definitely in the DBMS. I find that if I try something like this: using (var outerTX = UnitOfWork.Current.BeginTransaction()) { using (var nestedTX = UnitOfWork.Current.BeginTransaction()) { ... do stuff nestedTX.Commit(); } outerTX.Commit(); } then by the time it comes to outerTX.Commit() the transaction has become inactive, and results in a ObjectDisposedException on the session AdoTransaction. Are we therefore supposed to create nested NHibernate sessions instead? Or is there some other class we should use to wrap around the transactions (I've heard of TransactionScope, but I'm not sure what that is)? I'm now using Ayende's UnitOfWork implementation (thanks Sneal). Forgive any naivety in this question, I'm still new to NHibernate. Thanks! EDIT: I've discovered that you can use TransactionScope, such as: using (var transactionScope = new TransactionScope()) { using (var tx = UnitOfWork.Current.BeginTransaction()) { ... do stuff tx.Commit(); } using (var tx = UnitOfWork.Current.BeginTransaction()) { ... do stuff tx.Commit(); } transactionScope.Commit(); } However I'm not all that excited about this, as it locks us in to using SQL Server, and also I've found that if the database is remote then you have to worry about having MSDTC enabled... one more component to go wrong. Nested transactions are so useful and easy to do in SQL that I kind of assumed NHibernate would have some way of emulating the same...

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• PHP Regex to remove nested form elements but not input elements

  - by that0n3guy

  I'm modifying a PHP script that I have and it is currently outputting a nested form. Something like: <form name="input" action="html_form_action.asp" method="get"> <p>stuff here here, this may or may not be in a div, script, etc..</p> <form name="input" action="html_form_action.asp" method="get"> <div>stuff here possibilly</div> Username: <input type="text" name="user" /> <input type="submit" value="Submit" /> </form> <p>otherstuff this may or may not be in a div, script, etc..</p> </form> Nested form's are a no-no (IE hates them and basically causes the form to stop working), so I need to remove the nested form lines, but not the form items. I need to remove the nested: <form name="input" action="html_form_action.asp" method="get"> and </form> but not the outer <form and </form> or the input or submit stuff. Is this possible to do with regex? Note, the reason I just want to regex out the form rather than find the problem is because I know it will take some significant re-working to get rid of the double form... the regex solution is quick for now.

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• Inserting "null" (literally) in to a stored procedure parameter.

  - by Nazadus

  I'm trying to insert the word "Null" (literally) in to a parameter for a stored procedure. For some reason SqlServer seems to think I mean NULL and not "Null". If I do a check for IF @LastName IS NULL // Test: Do stuff Then it bypasses that because the parameter isn't null. But when I do: INSERT INTO Person (<params>) VALUES (<stuff here>, @LastName, <more stuff here>); // LastName is 'Null' It bombs out saying that LastName doesn't accept nulls. I would seriously hate to have this last name, but someone does... and it's bombing the application. We're using SubSonic 2.0 (yeah, it's fairly old but upgrading is painful) as our DAL and stepping through it, I see it does create the parameters properly (for what I can tell). I've tried creating a temp table to see if I could replicate it manually but it seems to work just fine. Here is the example I create: DECLARE @myval VARCHAR(50) SET @myval = 'Null' CREATE TABLE #mytable( name VARCHAR(50)) INSERT INTO #mytable VALUES (@myval) SELECT * FROM #mytable DROP table #mytable Any thoughts on how I can fix this?

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• Are we DELPHI, VCL or Pascal programmers?

  - by José Eduardo

  i´ve been a delphi database programmer since D2. Now i´m facing some digital imaging and 3D challenges that make me to start study OpenGL, DirectX, Color Spaces and so on. I´m really trying but nobody seems to use Delphi for this kind of stuff, just the good-old-paycheck Database programming. ok, i know that we have some very smart guys behind some clever components, some of this open-source. Is there any PhotoShop, Blender, Maya, Office, Sonar, StarCraft, Call of Dutty written in Delphi? Do i have to learn C++ to have access to zillions of books about that kind of stuff? What is the fuzz/hype behind this: int *varName = &anhoterThing? Why pointers seems to be the holy graal to this apps? I´ve downloaded MSVC++ Express and start to learn some WPF and QT integration, and i think: "Man, Delphi does this kind of stuff, with less code, less headaches, since the wheels were invented" This lead my mind to the following... Do you ever tried to write a simple notepad program using just notepad and dcc32 in Pascal/Delphi? if so embarcadero could make our beloved pascal compiler free, and sell just the ide, the vcl, the customer support ... and back to the question: Are we DELPHI, VCL or Pascal programmers?

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• XML parsing to plist iPhone SDK

  - by victor

  Hi, guys. Could you, please, help me with parsing of this XML code: <?xml version="1.0" encoding="utf-8"?> <stuff> <parts> <part id='327'> <name>Logitech MX500</name> <serial>618163558491989</serial> <account>ASDALSKD</account> <number>987 789 456</number> <alarm>alarm1</alarm> </part> <part id='846'> <name>Logitech MX510</name> <serial>871351434945431</serial> <account>KJSDAKLJFA</account> <number>454 564 131</number> <alarm>alarm2</alarm> </part> </parts> <info>Information</info> </stuff> And save data to plist file stuff.plist in this format: 327 NSArray Name NSString Logitech MX500 Serial NSString 618163558491989 Account NSString ASDALSKD Number NSString 987 789 456 Alarm NSString alarm1 846 NSArray Name NSString Logitech MX510 Serial NSString 871351434945431 Account NSString KJSDAKLJFA Number NSString 454 564 131 Alarm NSString alarm2

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• keyup bindings not working in Firefox

  - by Jarred

  Hi. You can see my project here - http://www.inluxphoto.com/custom/jsgallery/index.php I am attempting to make the left and right arrow keys move the slideshow. I was able to get it to work in all browsers by following exactly the instructions on the front page of jqueryfordesigners.com (sorry I am only allowed one link). However, it is necessary that the keyup be unbinded until the animation completes, so the user cannot do a quick double tap of the key, which breaks the show. This led me to the following function - function keyCommands() { //Bind Keys according to keyAssignments function keyCommandBind() { $(document.documentElement).bind('keyup', keyAssignments) } //Bind functions to specific keys function keyAssignments() { if (event.keyCode == 37) { leftArrow(); } if (event.keyCode == 39) { rightArrow(); } if (event.keyCode == 32) { spaceBar(); } } function leftArrow() { //unbind, do stuff, rebind } function rightArrow() { //unbind, do stuff, rebind } function spaceBar() { //unbind, do stuff, rebind } keyCommandBind(); } This works in all browsers except Firefox & Camino. Firebug tells me event (ie event.keyCode) is not defined. That's true, it's not defined, and I understand that. However I don't understand why, if it's not defined, does it work in all other browsers. How can I appropriately define this? Or, am I doing it wrong? Any help would be most appreciated, thanks for your time!

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• Can I print an HTMLLoader (pdf) in Adobe Air?

  - by Stephano

  I'm using AlivePDF to create a PDF file, then save it to the desktop. I can then use an HTMLLoader to display my lovely PDF file. Now, the print button in Adobe Reader works fine. However, there will be young children using the app, so I'd like to have a big "Print" button right above it. I figured I could just start up a print job and feed it my HTMLLoader. Am I doing something wrong here, cause I can't seem to get any output? note: variable "stuff" below is my HTMLLoader. I also have access to the PDF file if that comes in handy. private function print():void { var myPrintJob:PrintJob=new PrintJob(); var result:Boolean=myPrintJob.start(); if (result && stuff != null) { var rect:Rectangle=new Rectangle(0, 0, 2550, 3300); var opt:PrintJobOptions=new PrintJobOptions(true); myPrintJob.addPage(stuff, rect, opt); myPrintJob.send(); } else { //User does not have printer or user canceled print action } }

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• Can I print an HTMLLoader (pdf) in Adobe Air?

  - by Stephano

  I'm using AlivePDF to create a PDF file, then save it to the desktop. I can then use an HTMLLoader to display my lovely PDF file. Now, the print button in Adobe Reader works fine. However, there will be young children using the app, so I'd like to have a big "Print" button right above it. I figured I could just start up a print job and feed it my HTMLLoader. Am I doing something wrong here, cause I can't seem to get any output? note: variable "stuff" below is my HTMLLoader. I also have access to the PDF file if that comes in handy. private function print():void { var myPrintJob:PrintJob=new PrintJob(); var result:Boolean=myPrintJob.start(); if (result && stuff != null) { var rect:Rectangle=new Rectangle(0, 0, 2550, 3300); var opt:PrintJobOptions=new PrintJobOptions(true); myPrintJob.addPage(stuff, rect, opt); myPrintJob.send(); } else { //User does not have printer or user canceled print action } }

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• Getting the highlighted text inside selected element only.

  - by ashays

  My goal is to be able to get the highlighted text within a document, but only if that text is within a given section, and then apply a certain style to that selected text after clicking a div tag. I'll explain what I mean: So, having looked at window.getSelection() and document.selection.createRange().text, I attempted to use elmnt.getSelection() or elmnt.selection.createRange().text for some HTML element, elmnt. However, it doesn't seem to work, so that idea seems pretty null. This means I can't use this idea to determine the text that is highlighted within a given location. In case this doesn't make sense, essentially, I want html code that looks like this: <body> <div id="content">Stuff here will not be effected</div> <div id="highlightable">Stuff here can be effected when highlighted</div> <div id="morecontent">Stuff here will also not be effected</div> </body> So that whenever I've highlighted text, clicking on a specified div will apply the proper CSS. Now, on to the div tags. Basically, here's what I've got on that: $('.colorpicker').click( function(e) { console.log(getSelectedText()); } Eventually, all I want this to highlight the selected text and have the div tag change the color of the selected text to that of the respective div tag that I've selected. Neither of these seems to be working right now, and my only guess for the reason of the div tag is that it unhighlights whatever I've got selected whenever I click on the div tag. Fallbacks: If there is more than one time that 'abc' is found on the page and I highlight to color 'abc', I would like that only that copy of 'abc' be highlighted. I know this is a lot in one question, but even if I could get a little head start on this idea, my next personal project would be going a lot more smoothly. Thanks. :)

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• Foreach loop returning null values in PHP?

  - by Jascha

  Hello, I have a pretty simple problem. Basically I have an array called $list that is a list of titles. If I do a print_r($list) I get these results: Array ( [0] => Another New Title [1] => Awesome Movies and stuff [2] => Jascha's Title ) Now, I'm running a foreach loop to retrieve their values and format them in an <ul> like so... function get_film_list(){ global $categories; $list = $categories->get_film_list(); if(count($list)==0){ echo 'No films are in this category'; }else{ echo '<ul>'; foreach($list as $title){ echo '<li>' . $title . '<li>'; } echo '</ul>'; } } The problem I'm having is my loop is returning two values per value (is it the key value?) The result of the preceding function looks like this: Another New Title   Awesome Movies and stuff   Jascha's Title   I even tried: foreach($list as $key => $title){ echo '<li>' . $title . '<li>'; } With the same results: Another New Title   Awesome Movies and stuff   Jascha's Title   What am I missing here? Thanks in advance.

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• Python subprocess Popen.communicate() equivalent to Popen.stdout.read()?

  - by Christophe

  Very specific question (I hope): What are the differences between the following three codes? (I expect it to be only that the first does not wait for the child process to be finished, while the second and third ones do. But I need to be sure this is the only difference...) I also welcome other remarks/suggestions (though I'm already well aware of the shell=True dangers and cross-platform limitations) Note that I already read Python subprocess interaction, why does my process work with Popen.communicate, but not Popen.stdout.read()? and that I do not want/need to interact with the program after. Also note that I already read Alternatives to Python Popen.communicate() memory limitations? but that I didn't really get it... First code: from subprocess import Popen, PIPE def exe_f(command='ls -l', shell=True): "Function to execute a command and return stuff" process = Popen(command, shell=shell, stdout=PIPE, stderr=PIPE) stdout = process.stdout.read() stderr = process.stderr.read() return process, stderr, stdout Second code: from subprocess import Popen, PIPE from subprocess import communicate def exe_f(command='ls -l', shell=True): "Function to execute a command and return stuff" process = Popen(command, shell=shell, stdout=PIPE, stderr=PIPE) (stdout, stderr) = process.communicate() return process, stderr, stdout Third code: from subprocess import Popen, PIPE from subprocess import wait def exe_f(command='ls -l', shell=True): "Function to execute a command and return stuff" process = Popen(command, shell=shell, stdout=PIPE, stderr=PIPE) code = process.wait() stdout = process.stdout.read() stderr = process.stderr.read() return process, stderr, stdout Thanks.

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• ASP.NET MVC unit testing

  - by Simon Lomax

  Hi, I'm getting started with unit testing and trying to do some TDD. I've read a fair bit about the subject and written a few tests. I just want to know if the following is the right approach. I want to add the usual "contact us" facility on my web site. You know the thing, the user fills out a form with their email address, enters a brief message and hits a button to post the form back. The model binders do their stuff and my action method accepts the posted data as a model. The action method would then parse the model and use smtp to send an email to the web site administrator infoming him/her that somebody filled out the contact form on their site. Now for the question .... In order to test this, would I be right in creating an interface IDeliver that has a method Send(emailAddress, message) to accept the email address and message body. Implement the inteface in a concrete class and let that class deal with smtp stuff and actually send the mail. If I add the inteface as a parameter to my controller constructor I can then use DI and IoC to inject the concrete class into the controller. But when unit testing I can create a fake or mock version of my IDeliver and do assertions on that. The reason I ask is that I've seen other examples of people generating interfaces for SmtpClient and then mocking that. Is there really any need to go that far or am I not understanding this stuff?

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• memory leak in php script

  - by Jasper De Bruijn

  Hi, I have a php script that runs a mysql query, then loops the result, and in that loop also runs several queries: $sqlstr = "SELECT * FROM user_pred WHERE uprType != 2 AND uprTurn=$turn ORDER BY uprUserTeamIdFK"; $utmres = mysql_query($sqlstr) or trigger_error($termerror = __FILE__." - ".__LINE__.": ".mysql_error()); while($utmrow = mysql_fetch_array($utmres, MYSQL_ASSOC)) { // some stuff happens here // echo memory_get_usage() . " - 1241<br/>\n"; $sqlstr = "UPDATE user_roundscores SET ursUpdDate=NOW(),ursScore=$score WHERE ursUserTeamIdFK=$userteamid"; if(!mysql_query($sqlstr)) { $err_crit++; $cLog->WriteLogFile("Failed to UPDATE user_roundscores record for user $userid - teamuserid: $userteamid\n"); echo "Failed to UPDATE user_roundscores record for user $userid - teamuserid: $userteamid<br>\n"; break; } unset($sqlstr); // echo memory_get_usage() . " - 1253<br/>\n"; // some stuff happens here too } The update query never fails. For some reason, between the two calls of memory_get_usage, there is some memory added. Because the big loop runs about 500.000 or more times, in the end it really adds up to alot of memory. Is there anything I'm missing here? could it herhaps be that the memory is not actually added between the two calls, but at another point in the script? Edit: some extra info: Before the loop it's at about 5mb, after the loop about 440mb, and every update query adds about 250 bytes. (the rest of the memory gets added at other places in the loop). The reason I didn't post more of the "other stuff" is because its about 300 lines of code. I posted this part because it looks to be where the most memory is added.

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