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  • How to change name attribut value from twig

    - by taieb baccouch
    I am using Symfony version 2.3 and twig version 1.0. and I'm trying to change the name attribut value. Here is my code : <div class="control-group"> {{ form_label(form.menuTitle, null, {'label_attr': {'class': 'control-label'}}) }} {{ form_errors(form.menuTitle)}} <div class="controls"> <div class="span12"> {{ form_widget(form.menuTitle, {'attr': {'class': 'span6'}}) }} </div> </div> </div> The rendering code : <div class="control-group"> <label class="control-label required" for="smart_contactbundle_contact_menuTitle">Menu title</label> <div class="controls"> <div class="span12"> <input type="text" id="smart_contactbundle_contact_menuTitle" name="smart_contactbundle_contact[menuTitle]" required="required" maxlength="255" class="span6"> </div> </div> </div> I want to change name="smart_contactbundle_contact[menuTitle]" to name="menuTitle"

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  • select nodes from a line of xml code with sql

    - by wondergoat77
    I have a table that stores a huge line/entire document of xml like this: <?xml version="1.0" encoding="utf-16"?> <RealQuestResponse xmlns:xsi="http://www.w3.org /2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <Success>true</Success> <Subject> <AmbiguousMatches /> <Assessment> <LandValue>0</LandValue> <ImprovementsValue>0</ImprovementsValue> <TotalValue>0</TotalValue> </Assessment> <RecentSales /> <Warnings> <Score>0</Score> <TrusteesDeedRatio>0</Tr........etc Is there a way to pull any of these fields out of the xml? it is stored in a column in a table called AutomatedRequests That table looks like this: requestid Provider Date Success Response 1 test 1/2/2012 Y <?xml version..... <---this is the xml code stored> Ive seen a couple ways but nothing like this Id basically like something like select xmlnode1, xmlnode2, xmlnode3 from automatedrequests have tried this but not working: select xml.query('RealQuestResponse/Bedrooms/*') from automatedRequests where orderid = 1266162

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  • Why is function's length information of other shared lib in ELF?

    - by minastaros
    Our project (C++, Linux, gcc, PowerPC) consists of several shared libraries. When releasing a new version of the package, only those libs should change whose source code was actually affected. With "change" I mean absolute binary identity (the checksum over the file is compared. Different checksum - different version according to the policy). (I should mention that the whole project is always built at once, no matter if any code has changed or not per library). Usually this can by achieved by hiding private parts of the included Header files and not changing the public ones. However, there was a case where just a delete was added to the destructor of a class TableManager (in the TableManager.cpp file!) of library libTableManager.so, and yet the binary/checksum of library libB.so (which uses class TableManager ) has changed. TableManager.h: class TableManager { public: TableManager(); ~TableManager(); private: int* myPtr; } TableManager.cpp: TableManager::~TableManager() { doSomeCleanup(); delete myPtr; // this delete has been added } By inspecting libB.so with readelf --all libB.so, looking at the .dynsym section, it turned out that the length of all functions, even the dynamically used ones from other libraries, are stored in libB! It looks like this (length is the 668 in the 3rd column): 527: 00000000 668 FUNC GLOBAL DEFAULT UND _ZN12TableManagerD1Ev So my questions are: Why is the length of a function actually stored in the client lib? Wouldn't a start address be sufficient? Can this be suppressed somehow when compiling/linking of libB.so (kind of "stripping")? We would really like to reduce this degree of dependency...

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  • Odd Things of ASP.NET MVC Deployment on IIS 6

    - by misaxi
    Recently, I am a bit interested in the deployment of ASP.NET MVC application on IIS6 because Phil Haack posted an easier way to deploy ASP.NET MVC application on ASP.NET 4. So I decided to see how different version of ASP.NET MVC works on different version of ASP.NET. First off, I created an ASP.NET MVC 2 project in Visual Studio 2010 and deploy it to IIS 6 on Windows Server 2003 (only .NET framework 3.5 installed). I set the application to run in ASP.NET 2.0 and no extra stuff. Because I just wanted to see what sort of error would occur. And as expected, some error was reported as following. Then, I set the Copy Local attribute of System.Web.Mvc assembly to true as following and deploy again. As a result, the application ran smoothly. I had read tons of materials talked about the mess of deploying MVC application on IIS 6. And I did fight to tackle the deploying issues in my previous project. At least, if had used Extensionless Url in your application, you should have configured wildcard mapping in IIS. But in this case, I even didn’t have chance to do so. What the heck was going on exactly? Did I discover a new continent?

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  • visual studio attaching to a process in debug mode

    - by user1612986
    i have a strange problem. the dll that i built (lets call it my.dll) in c++ visual studio 2010 uses a third party library (say tp.lib) which in turn calls a third party dll (say tp.dll). for debugging prupose i have in configurationProperties-debugging-command: Excel.exe and configurationProperties-debugging-commandArguments: "$(TargetPath)" in my computer i also set PATH variable to the directory where tp.dll resides now when i hit the F5 in visual studio excel opens up with my.dll and crashes giving me a "cannot open in dos mode" error. the reason this happens is tp.dll is not deployed when debug version of my.dll is deployed. when i open an instance of excel seperately and manually drop the debug version of my.dll then everything works fine and i can see all my functions that i wrote in my.dll the only issue is now i do not know how to debug becuase i do not know how to attach visual studio to the instance of excel i opened up seperately. my question is: 1 how can i attach visual studio to an already opened instance of Excel or 2 how can i hit F5 and still make Excel pick up the required tp.dll from the directory specified in the PATH variable before it starts to deploy my.dll. any of these two will allow my to step through the code for the purpose of debugging. thanks in advance.

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  • mvn clean install using java 1.5 or 1.6

    - by bruce
    When I do mvn clean install, I get this error: annotations are not supported in -source 1.3 (try -source 1.5 to enable annotations) But where do I put this -source 1.5 command? I tried all permutations with mvn clean install and couldn't get it to work. So I tried putting compilation in my pom, like this: <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>2.0.2</version> <configuration> <source>1.6</source> <target>1.6</target> </configuration> </plugin> </plugins> But that didn't work either.. What am I missing? Thanks!

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  • iPhone settings not honoured

    - by winsmith
    My iPhone app has the following problem: Freshly installed, when I read out my "Play Sound" preference with the following code: defaults = [NSUserDefaults standardUserDefaults]; NSLog(@"Play Sounds? %d", [defaults boolForKey:@"play_sounds_preference"]); The setting always reads out as false, even though the default setting is set to true. Any ideas? Here is my Root.plist: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>StringsTable</key> <string>Root</string> <key>PreferenceSpecifiers</key> <array> <dict> <key>Type</key> <string>PSGroupSpecifier</string> <key>Title</key> <string>General Settings</string> </dict> <dict> <key>Type</key> <string>PSToggleSwitchSpecifier</string> <key>Title</key> <string>Sounds</string> <key>Key</key> <string>play_sounds_preference</string> <key>DefaultValue</key> <true/> </dict> </array> </dict> </plist> When the user opens the Settings.app and navigates to my app's name, THEN the setting reads out as true, even if the user doesn't change anything.

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  • How to use iPhone OS 3.2 functionality in an iPhone OS 3.0 app?

    - by mystify
    Problem: My app must run on iPhone OS 3.0. However, there are some features of iPhone OS 3.2 which I really want to use. Just as a little add-on for free. But I don't want to cut off my user base by doing this. Imagine you're an iPhone OS 3.0 thing, and someone gives you a book to read. It has iPhone OS 3.2 instructions. You never learned those. So what do you do? Crash? They would have to be hidden, so you're not bothered. Someone wrote recently on SO: keep in mind that you have to check the version at places in the source code where you like to use the new features and provide alternatives for older os versions So how could I do that? Wouldn't Xcode throw warnings when it finds stuff that isn't linkable from anything anywhere? Would I just check for the OS version and dynamically link - somehow - to whatever stuff I think is cool?

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  • Creative Gesture Camera in Processing

    - by user2892963
    I'm trying to use the creative gesture camera in Processing. I started with the Intel Perceptual Computing SDK, and ran into an issue. I want to get the hand openness, and I am running into some issues - no matter what, the hand.openness returns 0. It otherwise runs quite well... Some Sample code I'm trying to get to work: If you open your hand it starts printing to the console, close it and it stops. import intel.pcsdk.*; PXCUPipeline session; PXCMGesture.GeoNode hand = new PXCMGesture.GeoNode(); void setup() { session = new PXCUPipeline(this); if(!session.Init(PXCUPipeline.GESTURE)) exit(); } void draw() { background(0); if(session.AcquireFrame(false)) { if(session.QueryGeoNode(PXCMGesture.GeoNode.LABEL_BODY_HAND_PRIMARY|PXCMGesture.GeoNode.LABEL_OPEN, hand)) //Only when primary hand is open { rect(0, 0, 10, 10); println(hand.openness + " : " + frameCount); //Openness should be from 0 to 100 } session.ReleaseFrame(); } } Using the current version of Processing (2.0.3), Perceptual Computing SDK Version 7383.

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  • Groovy and XML: Not able to insert processing instruction

    - by rhellem
    Scenario Need to update some attributes in an existing XML-file. The file contains a XSL processing instruction, so when the XML is parsed and updated I need to add the instruction before writing it to a file again. Problem is - whatever I do - I'm not able to insert the processing instruction Based on the Java-example found at rgagnon.com I have created the code below Example code ## import groovy.xml.* def xml = '''|<something> | <Settings> | </Settings> |</something>'''.stripMargin() def document = DOMBuilder.parse( new StringReader( xml ) ) def pi = document.createProcessingInstruction('xml-stylesheet', 'type="text/xsl" href="Bp8DefaultView.xsl"'); document.insertBefore(pi, document.documentElement) println document.documentElement Creates output <?xml version="1.0" encoding="UTF-8"?> <something> <Settings> </Settings> </something> What I want <?xml version="1.0" encoding="UTF-8"?> <?xml-stylesheet type="text/xsl" href="Bp8DefaultView.xsl"?> <something> <Settings> </Settings> </something>

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  • Properly obsoleting old members in an XML Serializable class in C# VB .NET

    - by George
    Hi! Some time ago I defined a class that was serialized using XML. That class contained a serializable propertyA of integer type. Now I have extended and updated this class, whereby a new propertyB was added, whose type is another class that also has several serializable properties. The new propertyB is now supposed to play the role of propertyA, that is since type of propertyB is another class, one of its members would contain the value that previously propertyA contained, thus making peroptyA obsolete. What I am trying to figure out is how do I make sure that when I desireliaze the OLD version of this class (without propertyB in it), I make sure that the desreializer would take the value of propertyA from the old calss and set it as a value of one of the members of propertyB in a new class? Private WithEvents _Position As Position = New Position(Alignment.MiddleMiddle, 0, True, 0, True) Public Property Position() As Position 'NEW composite property that holds the value of the obsolted property, i.e. Alignment Get Return _Position End Get Set(ByVal value As Position) _Position = value End Set End Property Private _Alignment As Alignment = Alignment.MiddleMiddle <Xml.Serialization.XmlIgnore(), Obsolete("Use Position property instead.")> _ Public Property Alignment() As Alignment'The old, obsoleted property that I guess must be left for compliance with deserializing the old version of this class Get Return _Alignment End Get Set(ByVal value As Alignment) _Alignment = value End Set End Property Can you help me, please?

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  • SVG rotate deletes Elemets

    - by user1468661
    I'm trying to generate svg-Code in a web-application. Here's an example output: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"> <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:ev="http://www.w3.org/2001/xml-events" version="1.1" baseProfile="full" width="1000px" height="600px"> <rect x="147.50198255352893" y="109.43695479777953" width="15.860428231562253" height="295.79698651863595" stroke="rgb(0,0,0)" fill="rgb(255,255,255)" stroke-width="3" transform="rotate(20 155.43219666931006 257.3354480570975)"/> <rect x="163.36241078509119" y="405.2339413164155" width="379.85725614591587" height="-23.79064234734335" stroke="rgb(0,0,0)" fill="rgb(255,255,255)" stroke-width="3" transform="rotate(20 353.2910388580491 393.3386201427438)"/> <rect x="543.219666931007" y="381.44329896907215" width="22.204599524187188" height="-353.6875495638382" stroke="rgb(0,0,0)" fill="rgb(255,255,255)" stroke-width="3" transform="rotate(20 554.3219666931006 204.59952418715304)"/> </svg> There should be three rotated Rectangles, but somehow in Chrome, Safari, and Inkscape only one of them is displayed. I did google and have no clue what is wrong. Thx for your help.

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  • Highlighting Changes in Java

    - by Buzz Lightyear
    Basically, i have done my program so that it will display differences in strings and display the whole line. I want to highlight (in a colour) the differences in the line. Example: Original at line 5 <rect x="60.01" width="855.38" id="rect_1" y="-244.35" height="641.13" style="stroke-width: 1; stroke: rgb(0, 0, 0); fill: none; "/> Edited at line 5 <rect x="298.43" width="340.00" y="131.12" height="380.00" id="rect_1" style="stroke-width: 1; stroke: rgb(0, 0, 0); fill: rgb(255, 102, 0); "/> In this example, the width is different from the 'original' from the 'edited' version. I would like to be able to highlight that difference and any other difference. My code so far: Patch patch = DiffUtils.diff(centralFile, remoteFile); StringBuffer resultsBuff = new StringBuffer(remoteFileData.length); for (Delta delta : patch.getDeltas()) { resultsBuff.append("Original at line " + delta.getOriginal().getPosition() + "\n"); for (Object line : delta.getOriginal().getLines()) { resultsBuff.append(" " + line + "\n"); } resultsBuff.append("Edited at line " + delta.getRevised().getPosition() + "\n"); for (Object line : delta.getRevised().getLines()) { resultsBuff.append(" " + line + "\n"); } resultsBuff.append("\n"); } return resultsBuff.toString(); } That will display two whole lines like the example before (the original and the edited version) I want to be able to highlight the changes that have actually been made, is there any way to do this in Java?

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  • Management API - The request body XML was invalid or not correctly specified

    - by maartenba
    Cross posting from http://social.msdn.microsoft.com/Forums/en-US/windowsazuretroubleshooting/thread/31b6aedc-c069-4e32-8e8f-2ff4b7c30793 I'm getting this error on changing configuration through the service management API: The request body XML was invalid or not correctly specified The request body payload: <?xml version="1.0" encoding="utf-8"?> <ChangeConfiguration xmlns="http://schemas.microsoft.com/windowsazu re"> <Configuration>PD94bWwgdmVyc2lvbj0iMS4wIj8+CjxTZXJ2aWNlQ29uZmlndX JhdGlvbiB4bWxuczp4c2k9Imh0dHA6Ly93d3cudzMub3JnLzIwMDEvWE1MU2NoZW1hLWluc3RhbmNlIi B4bWxuczp4c2Q9Imh0dHA6Ly93d3cudzMub3JnLzIwMDEvWE1MU2NoZW1hIiB4bWxucz0iaHR0cDovL3 NjaGVtYXMubWljcm9zb2Z0LmNvbS9TZXJ2aWNlSG9zdGluZy8yMDA4LzEwL1NlcnZpY2VDb25maWd1cm F0aW9uIiBzZXJ2aWNlTmFtZT0iIiBvc0ZhbWlseT0iMSIgb3NWZXJzaW9uPSIqIj4KICA8Um9sZSBuYW 1lPSJXZWJSb2xlMSI+CiAgICA8Q29uZmlndXJhdGlvblNldHRpbmdzPgogICAgICA8U2V0dGluZyBuYW 1lPSJNaWNyb3NvZnQuV2luZG93c0F6dXJlLlBsdWdpbnMuRGlhZ25vc3RpY3MuQ29ubmVjdGlvblN0cm luZyIgdmFsdWU9IlVzZURldmVsb3BtZW50U3RvcmFnZT10cnVlIi8+CiAgICA8L0NvbmZpZ3VyYXRpb2 5TZXR0aW5ncz4KICAgIDxJbnN0YW5jZXMgY291bnQ9IjIiLz4KICAgIDxDZXJ0aWZpY2F0ZXMvPgogID wvUm9sZT4KPC9TZXJ2aWNlQ29uZmlndXJhdGlvbj4K</Configuration> </ChangeConfiguration> I'm passing it the following configuration: $configuration = '<?xml version="1.0" encoding="utf-8"?> <ServiceConfiguration xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://schemas.microsoft.com/ServiceHosting/2008/10/ServiceConfiguration" serviceName="" osFamily="1" osVersion="*"> <Role name="WebRole1"> <ConfigurationSettings> <Setting name="Microsoft.WindowsAzure.Plugins.Diagnostics.ConnectionString" value="UseDevelopmentStorage=true"/> </ConfigurationSettings> <Instances count="2"/> <Certificates/> </Role> </ServiceConfiguration>'; Does anyone know why this error occurs? I suspect it has something to do with encoding but not sure.

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  • How to use project which is already in VSS?

    - by shekhar
    Hi, I am trying to add my project under source control. I am using "Microsoft VSS 6.0" for it. My problem is, there is one project in VSS which I had copied on my system using 'Get Latest Version' to C:\latest_version directory. Then I copied that entire project in other directory (C:\working) and deleted the directory where I had taken latest version of it (C:\latest_version). Now everytime I make any changes in code and want to do check in, I need to check out that particular file in some folder, copy-replace that file with my new file and check-in. Can we do all this through visual studio? I saw some tutorials which describe how to add project to VSS but in my case project is already is in VSS and I just want to link it with my project. Is it possible? I dont know whether I am using VSS correctly or not. I would like to know how do people usually use it? How to do check-in , check-out? Thanks in advance !!

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  • How to factorize common tags with nokogiri builder ?

    - by plafoucriere
    Hi, I'd like to create several builders, with common tags, in order to have xml docs like : <xml version="1.0"?> <a_kind_of_root> <!-- This part is common --> <event_date>20100514</event_date> <event_id>123</event_id> <event_type>Conference</event_type> <!-- This part is specific to the builder --> <my_tag>some text</my_tag> </a_kind_of_root> </xml> <xml version="1.0"?> <another_kind_of_root> <!-- This part is common --> <event_date>20100514</event_date> <event_id>123</event_id> <event_type>Conference</event_type> <!-- This part is specific to the builder --> <my_other_tag>some integer</my_other_tag> </another_kind_of_root> </xml> I don't know how to put the common part inside a Nokogiri::XML::Builder Thanks

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  • Does RazorEngine require MVC3 to be installed?

    - by tkha007
    I am working on a web project that uses MVC2. I decided to try out RazorEngine to do some e-mail templating. This appeared to work fine when I was protyping using an MVC2 project so I assumed that RazorEngine will work fine for my e-mail templating solution. What I had forgotten at the time was that I actually had MVC3 installed on my local development machine. After deploying the project on a pre-test server I get the following error in the logs when the application attempts to do anything with RazorEngine: Could not load file or assembly 'System.Web.Razor, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified. File name: 'System.Web.Razor, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' at RazorEngine.Compilation.DefaultCompilerServiceFactory.CreateCompilerService(Language language) at RazorEngine.Templating.TemplateService.CreateTemplateType(String razorTemplate, Type modelType) at RazorEngine.Templating.TemplateService.CreateTemplate[T](String razorTemplate, T model) at RazorEngine.Templating.TemplateService.Parse[T](String razorTemplate, T model) at RazorEngine.Razor.Parse[T](String razorTemplate, T model) at System.Dynamic.UpdateDelegates.UpdateAndExecute3[T0,T1,T2,TRet](CallSite site, T0 arg0, T1 arg1, T2 arg2) at Persistence.Utility.RazorEngineHelper.Parse(String templateName, Object model) in The fact that it can't find 'System.Web.Razor' means that this DLL does not exist on the deployed server. The only difference I can think of between the deployment server and my local dev machine is that the deployment server does not have MVC3 installed but I may be mistaken because the deployment server is not something I normally control and as such I don't have a lot of information about it. It is meant to host this particular application so there have been previous deployments of this application to this server. This is the first time I'm making a deployment with RazorEngine as a dependency.

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  • PHP dynamic Page-level DocBlocks

    - by Obmerk Kronen
    I was wondering if there is a way to interact with the Page-level DocBlocks. My question is more specifically about wordpress plugin development, but this question has arised also in a non-wordpress environments. The reason is mainly the possibility to easily change VERSIONS and names throughout a large project with maybe a constant definition - but that will reflect also in the docblock.. The following example Docblock is from a wordpress plugin I write - /* Plugin Name: o99 Auxilary Functions v0.4.7 Plugin URI: http://www.myurl.com Description: some simple description that nobody reads. Version: 0.4.7 Author: my cool name Author URI: http://www.ok-alsouri.com */ Is there a way to transform it into : $ver = '0.4.7'; $uri = 'http://www.myurl.com'; $desc = 'some simple description that nobody reads.'; $mcn = 'my cool name'; etc.. etc.. /* Plugin Name: o99 Auxilary Functions ($ver) Plugin URI: ($uri) Description: ($desc) Version: ($ver) Author: ($mcn) Author URI: ($$uri) */ obviously for echo to work I would need to break the docblock itself, and I can not WRITE the docblock directly into it´s own file . In shorts : can I "generate" a docblock with php itself somehow (I would think that the answer is - "no" for the page itself.. But maybe I am wrong and someone has some neat hack :-) ) Is that even possible ?

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  • Tracking changed (unsaved) objects

    - by Eric
    I have a class which is serialized to and from an XML file when the user decided to open or save. I'm trying to add the typical functionality where when they try to close the form with un-saved changes the form warns them and gives them the option of saving before closing. I've added a HasUnsavedChanges property to my class, which my form checks before closing. However, it's a little annoying that my properties have changed from something like this .. public string Name { get; set; } to this... private string _Name; public string Name { get { return _Name; } set { this._Name = value; this.HasUnsavedChanges = true; } } Is there a better way to track changes to an instance of a class? For example is there some standard way I can "hash" an instance of a class into a value that I can use to compare the most recent version with the saved version without mucking up every property in the class?

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  • Mobile site not rendering mobile within iframe

    - by user2788371
    I'm launching a mobile version of an existing corporate web application that currently loads in an iframe for corporate authentication purposes. When accessing the web app's direct link from a mobile device, it displays beautifully. The problem is that when accessing through the iframe, the site doesn't seem to scale correctly and it looks more like I'm accessing the desktop version of the site. Any suggestions on how make the site within the iframe recognize the mobile device's width and adjust appropriately? I've tried setting the viewport within the HTML and CSS of the site being loaded and even then I'm not getting the change I expect on my iPhone. I haven't had the opportunity to test an Android yet but within our company, iOS is the most important. Some of snippets of code I have tried are listed below. I've also tried 480px and device-width (which I believe I can't access because the iframe is a different domain). Unfortunately, modifying the iframe page and settings are not an option. Also, Javascript cannot be used as a solution for other reasons. Within HTML of web app site: <meta name="viewport" content="width=320px, initial-scale=1.0, user-scalable=no" /> Within CSS of web app site: @viewport { width: 320px; } The above CSS does not seem to render even when not used in device specific @media code.

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  • memcached: which is faster, doing an add (and checking result), or doing a get (and set when returni

    - by Mike Sherov
    The title of this question isn't so clear, but the code and question is straightforward. Let's say I want to show my users an ad once per day. To accomplish this, every time they visit a page on my site, I check to see if a certain memcache key has any data stored on it. If so, don't show an ad. If not, store the value '1' in that key with an expiration of 86400. I can do this 2 ways: //version a $key='OPD_'.date('Ymd').'_'.$type.'_'.$user; if($memcache->get($key)===false){ $memcache->set($key,'1',false,$expire); //show ad } //version b $key='OPD_'.date('Ymd').'_'.$type.'_'.$user; if($memcache->add($key,'1',false,$expire)){ //show ad } Now, it might seem obvious that b is better, it always makes 1 memcache call. However, what is the overhead of "add" vs. "get"? These aren't the real comparisons... and I just made up these numbers, but let's say 1 add ~= 1 set ~= 5 get in terms of effort, and the average user views 5 pages a day: a: (5 get * 1 effort) + (1 set * 5 effort) = 10 units of effort b: (5 add * 5 effort) = 25 units of effort Would it make sense to always do the add call? Is this an unnecessary micro-optimization?

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  • C++: getting the address of the start of an std::vector ?

    - by shoosh
    Sometimes it is useful to use the starting address of an std::vector and temporarily treat that address as the address of a regularly allocated buffer. For instance replace this: char* buf = new char[size]; fillTheBuffer(buf, size); useTheBuffer(buf, size); delete[] buf; With This: vector<char> buf(size); fillTheBuffer(&buf[0], size); useTheBuffer(&buf[0], size); The advantage of this is of course that the buffer is deallocated automatically and I don't have to worry about the delete[]. The problem I'm having with this is when size == 0. In that case the first version works ok. An empty buffer is "allocated" and the subsequent functions do nothing size they get size == 0. The second version however fails if size == 0 since calling buf[0] may rightly contain an assertion that 0 < size. So is there an alternative to the idiom &buf[0] that returns the address of the start of the vector even if the vector is empty? I've also considered using buf.begin() but according to the standard it isn't even guaranteed to return a pointer.

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  • Which Android hardware devices should I test on? [closed]

    - by Tchami
    Possible Duplicate: What hardware devices do you test your Android apps on? I'm trying to compile a list of Android hardware devices that it would make sense to buy and test against if you want to target an as broad audience as possible, while still not buying every single Android device out there. I know there's a lot of information regarding screen sizes and Android versions available elsewhere, but: when developing for Android it's not terribly useful to know if the screen size of a device is 480x800 or 320x240, unless you feel like doing the math to convert that into Android "units" (i.e. small, normal, large or xlarge screens, and ldpi, mdpi, hdpi or xhdpi densities). Even knowing the dimensions of a device, you cannot be sure of the actual Android units as there's some overlap, see Range of screens supported in the Android documentation Taking into account the distribution of Platform versions and Screen Sizes and Densities, below is my current list based on information from the Wikipedia article on Comparison of Android devices. I'm fairly sure the information in this list is correct, but I'd welcome any suggestions/changes. Phones | Model | Android Version | Screen Size | Density | | HTC Wildfire | 2.1/2.2 | Normal | mdpi | | HTC Tattoo | 1.6 | Normal | mdpi | | HTC Hero | 2.1 | Normal | mdpi | | HTC Legend | 2.1 | Normal | mdpi | | Sony Ericsson Xperia X8 | 1.6/2.1 | Normal | mdpi | | Motorola Droid | 2.0-2.2 | Normal | hdpi | | Samsung Galaxy S II | 2.3 | Normal | hdpi | | Samsung Galaxy Nexus | 4.0 | Normal | xhdpi | | Samsung Galaxy S III | 4.0 | Normal | xhdpi | **Tablets** | Model | Android Version | Screen Size | Density | | Samsung Galaxy Tab 7" | 2.2 | Large | hdpi | | Samsung Galaxy Tab 10" | 3.0 | X-Large | mdpi | | Asus Transformer Prime | 4.0 | X-Large | mdpi | | Motorola Xoom | 3.1/4.0 | X-Large | mdpi | N.B.: I have seen (and read) other posts on SO on this subject, e.g. Which Android devices should I test against? and What hardware devices do you test your Android apps on? but they don't seem very canonical. Maybe this should be marked community wiki?

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  • Why does the order of the loops affect performance when iterating over a 2D array? [closed]

    - by Mark
    Possible Duplicate: Which of these two for loops is more efficient in terms of time and cache performance Below are two programs that are almost identical except that I switched the i and j variables around. They both run in different amounts of time. Could someone explain why this happens? Version 1 #include <stdio.h> #include <stdlib.h> main () { int i,j; static int x[4000][4000]; for (i = 0; i < 4000; i++) { for (j = 0; j < 4000; j++) { x[j][i] = i + j; } } } Version 2 #include <stdio.h> #include <stdlib.h> main () { int i,j; static int x[4000][4000]; for (j = 0; j < 4000; j++) { for (i = 0; i < 4000; i++) { x[j][i] = i + j; } } }

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  • How do I execute a program using Maven?

    - by Will
    I would like to have a Maven goal trigger the execution of a java class. I'm trying to migrate over a Makefile with the lines: neotest: mvn exec:java -Dexec.mainClass="org.dhappy.test.NeoTraverse" And I would like mvn neotest to produce what make neotest does currently. Neither the exec plugin documentation nor the Maven Ant tasks pages had any sort of straightforward example. Currently, I'm at: <plugin> <groupId>org.codehaus.mojo</groupId> <artifactId>exec-maven-plugin</artifactId> <version>1.1</version> <executions><execution> <goals><goal>java</goal></goals> </execution></executions> <configuration> <mainClass>org.dhappy.test.NeoTraverse</mainClass> </configuration> </plugin> I don't know how to trigger the plugin from the command line, though.

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