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  • IOKit header assert.h gone?

    - by Julian Kessel
    I want to get the hardware address of my mac's ethernet card. In all samples I saw in include on . Which seems not to exist on my system. GCC throws an error saying he doesn't know the type IOEthernetAddress. Is assert.h necessary for my task? It would be great if someone coud give me a working sample.

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  • How to show errors using JSON when an update fails in Rails 2.3.5 with jQuery

    - by Fortuity
    I've got in-place editing on a page in my app (using Rails 2.3.5 and jQuery). I want to know how to display an error on the page when the update fails. I'm using ajax (an XMLHttpRequest) to save an update to a Comment object. The controller has an update method like this: def update @comment = Comment.find(params[:id]) respond_to do |format| # if @comment.update_attributes!(params[:comment]) if false #deliberately forcing a fail here to see what happens format.json { render :nothing => true } else format.json { render :json => @comment.errors, :status => :unprocessable_entity } end end end In Firebug, I can see the server returns a "422" (an appropriate validation error status code). But it's a response to an XMLHttpRequest so there is no redirect to an error page. I think I actually want to do this: format.json { render :json => @comment.errors} and trigger some Javascript function that iterates through (and displays) any errors. I'm using a rails plugin http://github.com/janv/rest_in_place/ to implement the in-place editing. It doesn't appear to have any callback function to handle a failure. What are my options? Can I write some Javascript to respond to a failure condition without hacking the plugin? Do I have to hack the rest_in_place plugin to handle a failure condition? Is there a better plugin (for Rails or jQuery) that handles in-place editing, including failure conditions?

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  • Is DiskDrive Signature unique?

    - by Ananth
    I am currently using WMI to query various details about the underlying hardware in order to uniquely identify a machine. To this end, I came across a field called "Signature" under "Win32_DiskDrive". Is this signature unique across machines (globally)? Can this be used reliably to identify the machine? Thanks, Ananth

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  • What development technologies or technology stack is typically used in the security industry?

    - by vfilby
    In this case security means building security (access control, alarm systems, etc). And I am not talking about working directly with the hardware, more focused on web based applications/api's that clients or companies can use? Are there technologies that are commonly used? Are there technologies that shouldn't be used? Are there any real benefits to a linux based stack as opposed to a windows based stack for exposing web based applications?

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  • How to open DataSet in Visual Studio 2008 faster?

    - by Ekkapop
    When I open DataSet in Visual Studio 2008 to design or modify it, it always take a very long time (more than five minutes) before I can continue to do my job. While I'm waiting I can't do anything on Visual Studio, moreover CPU and memory usage is growth dramatically. I want to know, Is it has anyway to reduce this waiting time? Hardware - Desktop CPU: Intel Q6600 Memory: 4 GB HDD: 320 GB 7200 rpm OS: Windows XP 32 bit with Service Pack 3

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  • Mocking with Boost::Test

    - by Billy ONeal
    Hello everyone :) I'm using the Boost::Test library for unit testing, and I've in general been hacking up my own mocking solutions that look something like this: //In header for clients struct RealFindFirstFile { static HANDLE FindFirst(LPCWSTR lpFileName, LPWIN32_FIND_DATAW lpFindFileData) { return FindFirstFile(lpFileName, lpFindFileData); }; }; template <typename FirstFile_T = RealFindFirstFile> class DirectoryIterator { //.. Implementation } //In unit tests (cpp) #define THE_ANSWER_TO_LIFE_THE_UNIVERSE_AND_EVERYTHING 42 struct FakeFindFirstFile { static HANDLE FindFirst(LPCWSTR lpFileName, LPWIN32_FIND_DATAW lpFindFileData) { return THE_ANSWER_TO_LIFE_THE_UNIVERSE_AND_EVERYTHING; }; }; BOOST_AUTO_TEST_CASE( MyTest ) { DirectoryIterator<FakeFindFirstFile> LookMaImMocked; //Test } I've grown frustrated with this because it requires that I implement almost everything as a template, and it is a lot of boilerplate code to achieve what I'm looking for. Is there a good method of mocking up code using Boost::Test over my Ad-hoc method? I've seen several people recommend Google Mock, but it requires a lot of ugly hacks if your functions are not virtual, which I would like to avoid. Oh: One last thing. I don't need assertions that a particular piece of code was called. I simply need to be able to inject data that would normally be returned by Windows API functions.

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  • Mac OS on a Windows PC

    - by HDawg
    I've done a little bit of reading on the topic, but nothing too clear has turned up. Why is it so difficult to run Mac OS on a virtual machine on a PC? Some sources say it's because of hardware architecture. Is there a clear, definitive reason?

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  • Performance of CSS Transitions vs. JS animation packages

    - by desau
    I'm wondering - is there any difference in performance of using CSS Transitions vs. any of the various JS animation libraries? (scriptaculous, scripty2, jsAnim, MooTools, $fx, etc, etc). I've tried various tests in Safari / Google Chrome, and I don't actually see any difference -- I thought that CSS Transitions were supposed to be hardware accelerated.

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  • Get the parent id..

    - by tixrus
    I have a bunch of elements like the following: <div class="droppableP" id="s-NSW" style="width:78px; height:63px; position: absolute; top: 223px; left: 532px;"> </div> They all have class droppableP but different id's obviously and I would like to factor the code in this script I am hacking on. The original script just has a specific selector for each of one of these divs, but the code is all alike except for the id it does things to, which is either the id of the parent or another div with a name that's related to it. Here is the original code specifically for this div: $("#s-NSW > .sensible").droppable( { accept : "#i-NSW", tolerance : 'intersect', activeClass : 'droppable-active', hoverClass : 'droppable-hover', drop : function() { $('#s-NSW').addClass('s-NSW'); $('#s-NSW').addClass('encastrada'); //can't move any more.. $('#i-NSW').remove(); $('#s-NSW').animate( { opacity: 0.25 },200, 'linear'); checkWin(); } }); Here is how I would like to factor so the same code can do all of them and I will eventually do chaining as well and maybe get rid of the inline styles but here is my first go: $(".droppableP > .sensible").droppable( { accept : "#i" + $(this).parent().attr('id').substring(2), tolerance : 'intersect', activeClass : 'droppable-active', hoverClass : 'droppable-hover', drop : function() { $(this).parent().addClass($(this).parent().attr('id')); $(this).parent().addClass('encastrada'); $("#i" + ($this).parent().attr('id').substring(2)).remove(); $(this).parent().animate( { opacity: 0.25 },200, 'linear'); checkWin(); } }); The error I get is $(this).parent().attr("id") is undefined Many thanks. I have browsed related questions the one I understand that's closest to mine, turns out they didn't need parent function at all. I'm kind of a noob so please don't yell at me too hard if this is a stupid question.

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  • iOS 5 Audio Alarms Don't Sound Without kAudioSessionProperty_OverrideCategoryMixWithOthers On

    - by coneybeare
    I have an audio app that is having some problems with the way iOS 5 has changed audio behaviors. When my app's audio is playing (AVAudioSessionCategoryPlayback), and a Clock.app alarm or timer is fired from the OS, the UIAlertView notification pops up, but without the audio alert. My application sound ducks fine to get out of the way of the audio alert, but the alarm app's audio alert does not sound. Naturally, tons of support requests poured in over the iOS 5 change. I have solved this temporarily by setting kAudioSessionProperty_OverrideCategoryMixWithOthers which lets the alarm audio come through, but there are a few very undesirable side-effects when doing this: Other app's audio can play with/over mine. The remote control events are not routed to my app, but to iPod.app. None of the above drawbacks are acceptable for my app's requirements. I have been hacking away at this for some time now but haven't been able to crack it. How can I setup my audio such that: My app's audio still uses the AVAudioSessionCategoryPlayback category for background audio. The Clock.app alarms still have their audio alerts make sound The app still responds to remote control notifications

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  • How would you handle making an array or list that would have more entries than the standard implemen

    - by faceless1_14
    I am trying to create an array or list that could handle in theory, given adequate hardware and such, as many as 100^100 BigInteger entries. The problem with using an array or standard list is that they can only hold Integer.MAX_VALUE number of entries. How would you work around this limitations? A whole new class/interface? A wrapper for list? another data type entirely?

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  • LifeRay alternative in asp.net c#

    - by Piyush
    Hi, I have explored some of the features of LifeRay from past few months. But due to high on hardware and development resource I would not want to go with LifeRay. Is there any good alternative to liferay in asp.net c#. I have seen following CMS application similar to LifeRay. Just want to know if someone has used it. AxCMS.Net Umbraco CMS DotNetNuke Thanks, Piyush

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  • memcpy vs assignment in C

    - by SetJmp
    Under what circumstances should I expect memcpys to outperform assignments on modern INTEL/AMD hardware? I am using GCC 4.2.x on a 32 bit Intel platform (but am interested in 64 bit as well).

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  • Categories of tags

    - by Peter Rowell
    I'm starting a pro bono project that is the web interface to the world's largest collection of lute music and it's a challenging collection from several points of view. The pieces are largely from 1400 to 1600, but they range from the mid-1200's to present day. Needless to say, there is tremendous variability in how the pieces are categorized and who they are attributed to. It is obvious that any sort of rigid, DB-enforced hierarchy isn't going to work with this collection, so my thoughts turn to tags. But not all tags are the same. I'll have tags that represent a person/role (composer, translator, entabulator, etc.), tags that represent the instrument(s) the piece in written for, and tags that represent how the piece has been classified by any one of half a dozen different classification systems used over the centuries. We will be using a semi-controlled tag vocabulary to prevent runaway tag proliferation (e.g. del.icio.us), but I want to treat the tags as belonging to different groups. People tags should not be offered when the editor is doing instrument tagging, etc. Has anyone done something like this? I have several ways I can think of to do it, but if there is an existing system that is well-done it would save me time implementing/debugging. FWIW: This is a Django system and I'm looking at starting with Django-tagging and then hacking from there, possibly adding a category field or ...

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  • Programmatically measure size and way-order of L1 and L2 caches

    - by osgx
    How can I measure programmatically (not query the OS, but measure) the size and order of associativity of L1 and L2 caches (data caches)? Assumptions about system: It has L1 and L2 cache (may be L3 too, may be cache sharing), It may have a hardware prefetch unit (just like P4+), It has a stable clocksource (tickcounter or good HPET for gettimeofday). There are no assumptions about OS (it can be Linux, Windows, or something non-standard), and we can't use POSIX queries. Language is C. And compiler optimizations may be disabled.

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  • In Netbeans, how do I avoid wsimport rebuilding web service clients every build?

    - by gustafc
    I'm on a project where we use NetBeans (6.8). We use several different web services, which we have added as web service references, and Netbeans auto-generates the Ant wsimport scripts for us. Very handy, with one drawback: The web service clients are recompiled every time ant is invoked. This slows down the build process considerably and has caused the number of sword-related injuries, maimings and deaths to skyrocket. Normally, I'd fix this by changing the wsimport element from <wsimport sourcedestdir="${build.generated.dir}/jax-wsCache/PonyService" destdir="${build.generated.dir}/jax-wsCache/PonyService" wsdl="${wsdl-PonyService}" catalog="catalog.xml" verbose="true"/> to <wsimport sourcedestdir="${build.generated.dir}/jax-wsCache/PonyService" destdir="${build.generated.dir}/jax-wsCache/PonyService" wsdl="${wsdl-PonyService}" catalog="catalog.xml" verbose="true"> <produces dir="${build.generated.dir}/jax-wsCache/PonyService" /> </wsimport> But I can't, 'cause this part of the Ant script is auto-generated. If I right-click the PonyService web service reference and select Edit Web Service Attributes ⇒ wsimport options, I can add attributes to the wsimport element, but not child elements. So: How do I add the produces child element to wsimport other than hacking the auto-generated Ant script? Or more generally: How do I make the NetBeans-generated wsimport not recompile the web service clients every time I build?

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  • VB.net for handheld device

    - by sijith
    Hi, I want to develop an application in VB.net for handheld device(Ticket machine in Bus and train).Is it possible to develop in Vb net. Whether i need windows OS in my handheld device or any runtime environment only needed. My hardware is ARM processor. I want to run my application as standalone in my machine.

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  • iphone: Adding UIRequiredDeviceCapabilitie

    - by pion
    I am reading the "Device Support - Setting Required Hardware Capabilities" on http://developer.apple.com/iphone/library/documentation/iPhone/Conceptual/iPhoneOSProgrammingGuide/AdvancedFeatures/AdvancedFeatures.html I want to add still-camera capability by doing the following: Open my Info.plist Click + Add UIRequiredDeviceCapabilities on the Key column Add still-camera on the Value column Save the updated Info.plist Is this the correct way? Thanks in advance for your help.

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  • Multiple apks, single listing of app for Google TV and Android Phone/Tablet

    - by Yash
    I have an Android phone/tablet apk which is currently in Play store and has these settings in its manifest file: package="com.company.xyz" android:versionCode="0803010008" android:versionName="01.00.08" > <uses-sdk android:minSdkVersion="8" android:targetSdkVersion="8" /> <uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" /> <uses-permission android:name="android.permission.WAKE_LOCK" /> <uses-library android:name="com.adobe.flashplayer" android:required="true" /> <supports-screens android:anyDensity="true" android:largeScreens="true" android:normalScreens="true" android:smallScreens="false" android:xlargeScreens="true" /> <uses-feature android:name="android.hardware.touchscreen" android:required="true" /> I had uploaded another apk for GoogleTV which has the same package name com.company.xyz as the previous apk and has the following settings in its manifest file: package="com.company.xyz" android:versionCode="1203010001" android:versionName="01.00.01" > <uses-sdk android:minSdkVersion="12" android:targetSdkVersion="12" /> <uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> <uses-permission android:name="android.permission.WAKE_LOCK" /> <uses-feature android:name="android.hardware.touchscreen" android:required="false" /> <uses-feature android:name="com.google.android.tv" android:required="true" /> <supports-screens android:largeScreens="true"/> <uses-configuration android:reqFiveWayNav="true" /> The Google TV apk never showed up on Play Store on GTV boxes, so I updated its manifest with the settings below and with everything else remaining the same package="com.company.xyz" android:versionCode="1203010002" android:versionName="01.00.02" > <supports-screens android:largeScreens="true" android:normalScreens="false" android:smallScreens="false" android:xlargeScreens="false" /> At this point, I am unable to save the app because of the Play Store error "Error: New APK version is lower than previous APK version" even though the GoogleTV apk has a higher version code than the Phone/Tablet version. Does anyone have a solution for this? Thanks!

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