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• Email delivery failure - bounceback address

  - by user808532

  I've been looking for documentation on the standard behaviour for mail servers who fail to deliver their mail. I want the 'From' field to be different from the account that receives emails when there is a delivery failure. E.g. My program sends an email from '[email protected]', and on failure to deliver I want to be sent the delivery failure bounceback at '[email protected]'. Is this accomplished by setting the reply-to? Or should I login with the 'failedemails' account and therefore it will receive the email back? Thanks.

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• Symfony models with foreign keys

  - by Daniel Hertz

  So I have 2 models. Users and Groups. Each group has a user as the creator and a group has many users. The FK of these tables are set up correctly, but I was wondering if there was an easier way to get all related FK objects from other objects. For example, with a group object, is there a built in method to get the user object of the creator? Or for a user, is there a built in method to get all group object that he belongs to? I couldn't find out how to do this with the documentation on the symfony page. From what I see I feel like I need to create methods and use doctrine to access the appropriate tables using the current objects id and so on. Thanks!

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• Accessing object's method within string

  - by Wild One

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

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• How to make a UILabel which adjusts it's text to the upper left?

  - by mystify

  For some strange reason, in iPhone OS 3.0 this doesn't work: I made a big fullscreen UILabel with numberOfLines = 0 and baselineAdjustment = UIBaselineAdjustmentNone. It refuses to show the text in the upper left. It's always in the center of the bounding box, aligned to the left. The documentation says: UIBaselineAdjustmentNone Adjust text relative to the top-left corner of the bounding box. This is the default adjustment. Available in iPhone OS 2.0 and later. Probably a framework bug? I started with shiny new labels to test it. Text is centered.

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• Obtaining Nearby Wifi In C Using VS2010

  - by WizardsSleeve

  Hi All, I am trying to identify a method for obtaining nearby wifi access points using C in Windows. I am coding in Visual Studio 2010. I have read the necessary documentation but am lacking in guidance on how to implement code that would accomplish this. I am specifically interested in obtaining the MAC address of nearby access points or at a minimum the MAC address of the currently connected Wifi access point. Is it possible to do this using WMI in Windows, specifically on Windows XP SP3 and later? Any pointers on how to do this are greatly appreciated.

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• Can I play any Buffer only once at a given time?

  - by mystify

  From the OpenAL documentation: The basic OpenAL objects are a Listener, a Source, and a Buffer. There can be a large number of Buffers, which contain audio data. Each buffer can be attached to one or more Sources My problem is, that I have one sound file which I need to play multiple times per second, at the same time. The sound is 2 seconds long. So it will overlap. Would I need multiple filled buffers for this (= multiple times that sound in memory)? If I would attach one Buffer to multiple Sources, would I be able to play the sound 10 times, overlapping itself, with just one copy in memory? Or would I still have to deal with 10 copies of that sound in memory?

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• perforce implementation of clearcase like "views"

  - by Pradyot

  I have read through the documentation on perforce and the "branching strategy" advice as well. One thing thats left me baffled, is how a simple concern is does not seem to adequtely adressed. When I am working on a project that touches many parts of our code base , I cannot checkin my code at the end of the day without checking into the trunk. So do I need to branch in this situation? I want to be able to have the ability to have a history of my changes in a long and hard project, so I can go back when I I make a wrong turn.. The problem with branching I see is that I will be creating copies of almost the entire codebase .. Am I missing an obvious solution here? thanks

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• Windows 8 Set User Account Image

  - by Nexion

  I'm trying to write a small CONSOLE (not metro style) app to quickly change the user account image of the current user to a select image for a setup scrip that I'm running on a bunch of laptops. They're all Windows 8 and (since it hasn't been out terribly long) I can't find a ton of info on it. I did manage to figure out that you need to use the Windows.System.UserProfile object to do so, but I can't find any documentation on how to do so in a console app. Thoughts? Suggestions?

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• squid url_rewrite with cookie

  - by geekGod

  I have a squid 3.0 deployed which has a url_rewriter program which rewrites certain HTTP requests. I now need to modify this prpogram to rewrite along with the cookie setting code. As much as I have seen the url_rewrite_program documentation, it appears that I may not be able to set a cookie along with the 302 response. Is this correct? Can i set a cookie in the redirect response or would this require modifying the squid code. Appreciate any help in this regard!

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• g++ library search failure

  - by Frederick

  I have a directory structure as below: / | +--- /lib | libsomething.a | libsomething.so | +----/obj anObjFile.o When I run the following command from within the obj directory: g++ -L../lib -lsomething anObjFile.o I get undefined reference errors. Apparently gcc is failing to locate libsomething.a. But now if I delete libsomething.so and then rerun the command, linking succeeds. As per gcc documentation -lsomething should expand to libsomething.a. Then why is presence of libsomething.so causing the library search to fail? Also, how can I resolve this problem? I'm on Linux Mint 12 with gcc version 4.6.1.

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• How to switch data pins on/off on parallel port?

  - by Matt

  I want to simply switch certain data pins on and off, so that they can control a set of relays. I'm not asking about the hardware bit (should be easy), but I don't know where to begin writing the software. I don't want a high level library that can send bytes to a device - I literally want to switch on/off certain pins. I'm running Linux and I want to do this in Java, so would I just need a library? It would be nice if the library has good documentation and is easy to use, but if not then a short example code will help me get started.

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• How to test if Scala combinator parser matches a string

  - by W.P. McNeill

  I have a Scala combinator parser that handles comma-delimited lists of decimal numbers. object NumberListParser extends RegexParsers { def number: Parser[Double] = """\d+(\.\d*)?""".r ^^ (_.toDouble) def numbers: Parser[List[Double]] = rep1sep(number, ",") def itMatches(s: String): Boolean = parseAll(numbers, s) match { case _: Success[_] => true case _ => false } } The itMatches function returns true when given a string that matches the pattern. For example: NumberListParser.itMatches("12.4,3.141") // returns true NumberListParser.itMatches("bogus") // returns false Is there a more terse way to do this? I couldn't find one in the documentation, but my function sees a bit verbose, so I wonder if I'm overlooking something.

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• Building a jar to be used in an eclipse PDE?

  - by tul

  I have written an application that use a third party library. I have then packaged this as an executable jar using the maven-assembly-plugin (producing a jar with all dependencies including some of the third-party jars). Next I need to add this jar to a PDE project so it can be launched from eclipse. But to make this work I need to add some of the thirs-party dependencies to my PDE project which is already located in the packaged jar. So I get duplicated dependencies. Any ideas on how to avoid this? Or suggestion to documentation that describes how this is done properly?

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• python's `with` statement

  - by Prestel Nué

  Hi there, seems like I do not understand something with---the python with statement. Consider this class: class test(object): def __enter__(self): pass def __exit__(self, *ignored): pass now, when using it with with, like in with test() as michael: print repr(michael) I would expect some output like <test instance at memore blah>. But I get None. Something wrong here? Any suggestions would help. (I am using Python 2.6.6.) EDIT: Thanks to ephement for pointing me to the documentation. The __enter__ method should read def __enter__(self): return self

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• What's the difference between MinGW's make and MSYS's make?

  - by Nathan2055

  I'm working on getting C++ set up in NetBeans (which requires MinGW). It says in the documentation for the C/C++ part of NetBeans that it will only work with MSYS's make, not MinGW's make. I wanted to know the difference between the two, so I Googled it and came up with this question which says there are two different makes included with MinGW, mingw32-make (MinGW's make) and make (MSYS's make). What is the difference between these two programs? Why can NetBeans use one and not the other?

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• Android on Desktop tutorials/resources

  - by Ascension Systems

  I'm aware of the android-x86 project and as far as the end result (bootable live/install iso), I am looking to do the same thing. The difference is, I'm looking to do this with the ice cream sandwich branch from android master repo. Ice cream sandwich adds full support for x86 hardware and even sports a build target specifically for running the OS in virtualbox. So my question is, is anyone aware of any documentation for building and deploying to that target? Just in case it's not clear, I'm not just using the android-x86 project because they haven't yet put up a build for anything later than android 3.

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• Chaining your own method in Ruby on Rails

  - by steven_noble

  In my Rails app, I am used to using syntax like the following in a number of places, including helpers/application_helper.rb: def my_method(x,y) return x+y end I am also used to calling the resulting method from basically anywhere in my app using syntax like this: my_method(2,3) However, I'd like to be able to use syntax like like this: class_from_my_rails_app.my_method(3) How and where do I define my_method so I can use it like this? I'm happy to consult the documentation, but I just don't know what the latter style is called. What do you call it? Many thanks, Steven.

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• How I can store custom values in Joomla's "Application context"?

  - by Q-Protex

  I just finished to implement a custom functionality in one of the page articles in my Joomla website using sorcerer. In this page it is possible to query a hash and lookup it against a database. I would like to store the last 5 queries and show them in the page but I don't know how to do it. I need something as Java EE "Application Context" to store this values and make them available to all the users so using a Session to store this values is not what I need. I saw in the documentation that in Joomla exists JApplicacion but none of his methods allows me to store data.

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• How to detect if an element exists in Watir

  - by Rijksband

  Hi, I'm relatively new to Watir but can find no good documentation (examples) regarding how to check if an element exists. There are the API specs, of course, but these make precious little sense to me if I don't find an example. I've tried both combinations but nothing seems to work... if browser.image (:src "/media/images/icons/reviewertools/editreview.jpg").exists then... if browser.image (:src "/media/images/icons/reviewertools/editreview.jpg").exists? then... If anyone has a concrete suggestion as per how to implement this, please help! Thanks!

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• Are there any Android YouTube Player Flags?

  - by stormin986

  My goal is to launch a video in the YouTube player, and then return to my app. I realize I can't control what's going on in another app, BUT I'm wondering if the YouTube app supports any kind of flags or data set in the calling Intent that might support this functionality. Anyone aware of any? I cannot find any documentation on the YouTube app/activities. I had to watch the logs just to figure out which activity to call in the first place (so the choose app dialog didn't appear).

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• building a hash lookup table during `git filter-branch` or `git-rebase`

  - by intuited

  I've been using the SHA1 hashes of my commits as references in documentation, etc. I've realized that if I need to rewrite those commits, I'll need to create a lookup table to correspond the hashes for the original repo with the hashes for the filtered repo. Since these are effectively UUID's, a simple lookup table would do. I think that it's relatively straightforward to write a script to do this during a filter-branch run; that's not really my question, though if there are some gotchas that make it complicated, I'd certainly like to hear about them. I'm really wondering if there are any tools that provide this functionality, or if there is some sort of convention on where to keep the lookup table/what to call it? I'd prefer not to do things in a completely idiosyncratic way.

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• Obtaining Nearby Wifi In C

  - by WizardsSleeve

  I am trying to identify a method for obtaining nearby wifi access points using C in Windows. I am coding in Visual Studio 2010. I have read the necessary documentation but am lacking in guidance on how to implement code that would accomplish this. I am specifically interested in obtaining the MAC address of nearby access points or at a minimum the MAC address of the currently connected Wifi access point. Is it possible to do this using WMI in Windows, specifically on Windows XP SP3 and later? Any pointers on how to do this are greatly appreciated.

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• About Attributes member of LUID_AND_ATTRIBUTES used in TOKEN_PRIVILEGES structure

  - by Astaroth

  MSDN article, Enabling and Disabling Privileges in C++, provided the a code example to show how to enable or disable a privilege in an access token. I quote the part in questioned: tp.PrivilegeCount = 1; tp.Privileges[0].Luid = luid; if (bEnablePrivilege) tp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED; else tp.Privileges[0].Attributes = 0; What is the meaning of zero value for Attributes member? According to the documentation of TOKEN_PRIVILEGES structure, the attributes of a privilege can be a combination of the following values: SE_PRIVILEGE_ENABLED  (it is 0x00000002L in WinNT.h) SE_PRIVILEGE_ENABLED_BY_DEFAULT  (it is 0x00000001L in WinNT.h) SE_PRIVILEGE_REMOVED  (it is 0x00000004L in WinNT.h) SE_PRIVILEGE_USED_FOR_ACCESS  (it is 0x80000000L in WinNT.h) So, we don't see any valid constant with a value of zero. I guess, the zero is equal to SE_PRIVILEGE_REMOVED. Anybody here could explain what the zero value really does?

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• Advanced Registry Monitoring

  - by RyanTimmons91

  I'm attempting to create a small utility to watch for the creation (or modification) of a specific registry key, and to kill the process responsible for causing that registry modification. I have had success in watching the changes to the registry via a class called 'RegistryMonitor', however it does not give you any information on what process initiated the registry call, through some googling I found that a library called 'EasyHook' should be able to do what I want, but all the documentation states that its designed for a per-application hook. The program itself is a temporary security patch, until our vendors come out with an official security update. As best I can tell there isn't a way to do exactly what I want to accomplish from C#, which is the only language I can comfortable write, test and execute software in. Any help on this would be appreciated I'm considering watching the registry changes via the program I already have, then if the change is discovered (the pc is already infected) running RKill and locking down the PC to prevent the issue from getting any worse

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• Load a dll library on Java

  - by crimson_king

  I need to load a library written in C on java. I have only dlls and header files. Since I didn't understand how to translate pointers or other derivated types from JNI documentation I tried to use an automating tool for this, gluegen and SWIG, but I couldn't manage on how to use them. I tried to create an interface file for SWIG but it only gives errors. Is there an example on how to load a dll to a java program using ANY tool that works and can generate translated C function and types from .h files ?

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