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• AWS Load Balancer with a static IP address

  - by user965904

  I have a set-up running on Amazon cloud with a couple of EC2 Instances running through a load balancer. It is important that the site has a unique(static) IP or set of IPs as I'm plugging in 3rd party APIs which only accept requests made from IPs which have been added to their whitelist. So basically unless we can give these 3rd parties a static IP or range of IPs that the requests from the site will always come from then we would be unable to make any calls to them. Anyone knows how to achieve this as I know that Elastic IPs are not compatible with load balancers? If I were to look up the IP of the load balancer DNS name (e.g. dualstack.awseb-BAMobile-ENV-xxxxxxxxx.eu-west-1.elb.amazonaws.com resolves to 200.200.200.200) would that IP be Static? Any help/advise is greatly appreciated guys.

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• How to create select SQL statement that would produce "merged" dataset from two tables(Oracle DBMS)?

  - by Roman Kagan

  Here's my original question: merging two data sets Unfortunately I omitted some intircacies, that I'd like to elaborate here. So I have two tables events_source_1 and events_source_2 tables. I have to produce the data set from those tables into resultant dataset (that I'd be able to insert into third table, but that's irrelevant). events_source_1 contain historic event data and I have to do get the most recent event (for such I'm doing the following: select event_type,b,c,max(event_date),null next_event_date from events_source_1 group by event_type,b,c,event_date,null events_source_2 contain the future event data and I have to do the following: select event_type,b,c,null event_date, next_event_date from events_source_2 where b>sysdate; How to put outer join statement to fill the void (i.e. when same event_type,b,c found from event_source_2 then next_event_date will be filled with the first date found GREATLY APPRECIATE FOR YOUR HELP IN ADVANCE.

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• facebook messages result set like part 2

  - by David

  Hey guys, I don't think I'm getting it right. Here is my most recent query that I believe is almost working. SELECT max(sender_id) as sender_id, subject, MAX(id) as message_id, MAX(created_at) as updated_at FROM messages where (recipient_id = #{current_user} and recipient_deleted = 'f') or sender_id = #{current_user} GROUP BY subject ORDER BY max(created_at) DESC ; Basically the goal is to fetch all recent messages of a user, group them by subject, and make sure that the photo that is showing up is the other party's photo, never the current user. (also need the most recent message body and message count but that is for another time) Here is what I think is wrong. doing max(sender_id) is wrong, since the current_user id could be higher than the sender's id. I am using the sender_id in the html page to fetch the user's photo.

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• How to let an average user design a boolean expression graphically

  - by Svein Bringsli

  In our application there's a list of customers, and a list of keywords (among other things). Each customer can have a number of keywords, but it's not mandatory. So for instance, one customer can have the keywords "retail" and "chain", one can have only "contractor" and a third can have none at all. I want to let the user make a selection of customers based on these keywords, but not having to write (retail AND chain) or contractor and not wholesale I would like to make it as user-friendly as possible, and ideally with only "simple" controls, like checkboxes, comboboxes etc. Does anyone have any suggestions on how to design this? Or maybe some examples of applications where there are similar functionality?

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• Forward, redirect, forward!! How do I check parameters being sent?

  - by Arjun

  There's this form that I'm placing on a site. This form submits some parameters to a site which then sends some parameters using "GET" to another site, which then opens the third site. Now the first 2 sites pass so quickly that I can not see what parameters were passed using the URL. I just need a simple tool or hint or firefox addon or ANYTHING ELSE on how to track what parameters were sent to url1, url2 etc. There's got to be some tool for this, only I can't seem to find it! Argh!

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• What are your favorite extension methods for C#/.NET? (codeplex.com/extensionoverflow)

  - by bovium

  Let's make a list of answers where you post your excellent and favorite extension methods. The requirement is that the full code must be posted and a example and an explanation on how to use it. Based on the high interest in this topic I have setup an Open Source Project called extensionoverflow on Codeplex. Please mark your answers with an acceptance to put the code in the Codeplex project. Please post the full sourcecode and not a link. Codeplex News: 11.11.2008 XmlSerialize / XmlDeserialize is now Implemented and Unit Tested. 11.11.2008 There is still room for more developers. ;-) Join NOW! 11.11.2008 Third contributer joined ExtensionOverflow, welcome to BKristensen 11.11.2008 FormatWith is now Implemented and Unit Tested. 09.11.2008 Second contributer joined ExtensionOverflow. welcome to chakrit. 09.11.2008 We need more developers. ;-) 09.11.2008 ThrowIfArgumentIsNull in now Implemented and Unit Tested on Codeplex.

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• C# Speech Recognition - Is this what the user said?

  - by RichieACC

  I have need to write an application which uses a speech recognition engine -- either the built in vista one, or a third party one -- that can display a word or phrase, and recognise when the user reads it (or an approximation of it). I also need to be able to switch quickly between languages, without changing the language of the operating system. The users will be using the system for very short periods. The application needs to work without the requirement of first training the recognition engine to the users' voices. It would also be fantastic if this could work on Windows XP or lesser versions of Windows Vista. Optionally, the system needs to be able to read information on the screen back to the user, in the user's selected language. I can work around this specification using pre-recorded voice-overs, but the preferred method would be to use a text-to-speech engine. Can anyone recommend something for me?

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• Cocoa Touch: Why doesn't UINavigationController render 'Back' button?

  - by Joshua

  When I push a view controller it animates properly and slides in, the only problem is that no 'Back' button is rendered up top.The back button is still there, I can still tap it, it just doesn't render on the screen. This behavior is identical in both the simulator and on multiple devices. Is this a known issue or bug? Using 3.1.3 of the iPhone SDK. More information: It renders it for further levels, just not on the second level of nav controller. So Main Page (No back button - OK). Second level page (back button, but doesn't render - not OK). Third level page (Back button there and rendering - OK).

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• How to make WPF app work as a child process in Citrix

  - by RichardOD

  I am working on a 3rd party application that allows plugins to be written in .NET 1.1. I have decided I would like to write my plugin in a seperate process that is called from the .NET 1.1 application (achieved using Process.Start). This is fine- I create a new process that is a WPF app. When I launch this through MSTSC everything works as expected, however when I run the app through Citrix, the WPF child app fails to render correctly, and the mouse position starts going crazy- the child process window is basically not usable. Is there a way to avoid this happening? If I create a seperate WPF application and deploy this through Citrix everything works fine. If I create a child Windows forms app in .NET 3.5, that also works fine.

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• Implementation of APIs on diferent platforms

  - by b-gen-jack-o-neill

  OK, this is basicly just about any non-default OS API running on all different OS. But for my example let´s consider platform Windows, API SDL (Simple DirectMedia Layer). Actually this question came to my mind when I was reading about SDL. Originally, I thought that on Windows (and basicly any other OS) you must use OS API to make certain actions, like wrtiting to screen, creating window and so on, becouse that API knows what kernel calls and system subroutines calls it has to do. But when I read about SDL, I surprised me, becouse, you cannot make computer to do anything more than OS can, since you cannot acess HW directly, only thru OS API, from Console allocation to DirectX. So, my question actually is, how does this not-default-OS APIs work? Do they use (wrap) original system API (like MFC wraps win32 api)? Or, do they actually have direct acess to Windows kernel? Or is there any third, way in between? Thanks.

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• What is the maximum number of controls that a VBA form can hold?

  - by Lunatik

  I'm currently building an Excel 2003 app that requires a horribly complex form and am worried about limitations on the number of controls. It currently has 154 controls (counted using Me.Controls.Count - this should be accurate, right?) but is probably only about a third complete. The workflow really fits a single form, but I guess I can split it up if I really have to. I see evidence in a Google search that VB6 (this usually includes VBA) has a hard limit of 254 controls in a form. However, I created a dummy form with well over 1200 controls which still loaded and appeared to work just fine. I did get some 'out of memory' errors when trying to add specific combinations of controls though, say 800 buttons and 150 labels, leading me to think that any limit might be affected by the memory requirements of each type of control. Does anyone have any information that might help ensure that I or, more importantly, other users with differing environments don't run into any memory issues with such a large form?

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• MySQL import in phpmyadmin (CSV) chokes on quotes

  - by Andrew Swift

  I am trying to import a .csv file into a MySQL table via phpMyAdmin. The .csv file is separated by pipes, formated like this: data|d'ata|d'a"ta|dat"a| data|"da"ta|data|da't'a| dat'a|data|da"ta"|da'ta| The data contains quotes. I have no control over the format in which I recieve the data -- it is generated by a third party. The problem comes when there is a | followed by a double quote. I always get an "invalid field count in CSV input on line N" error. I am uploading the file from the import page, using Latin1, CSV, terminated by |, separated by ". I would like to just change the "enclosed by" character, but I keep getting "Invalid parameter for CSV import: Fields enclosed by". I have tried various characters with no success. How can I tell MySQL to accept this format in phpMyAdmin? Setting up these tables is the first step in writing a program that will use uploaded gzipped .csv files to maintain the catalog of an e-commerce site.

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• How can I debug or set a break statement inside an expression tree?

  - by Abel

  When an external library contains a LINQ provider, and it throws an exception when executing a dynamic expression tree, how can I break when that expression is thrown? For example, I use a third party LINQ2CRM provider, which allows me to call the Max<TSource, TResult>() method of IQueryable, but when it throws an InvalidCastException, I fail to break on the spot when the exception is thrown, making it hard to review the stack-trace because it's already unwinded when the debugger breaks it in my code. I've set "break on throw" for the mentioned exception. My debug settings are: Clarification on where exactly I'd want to break. I do not want to break in side the LINQ Expression, but instead, I want to break when the expression tree is executed, or, put in other words, when the IQueryable extension method Max() calls the override provided by the LINQ provider. The top of the stacktrace looks like this, which is where I would like to break inside (or step through, or whatever): at XrmLinq.QueryProviderBase.Execute[T](Expression expression) at System.Linq.Queryable.Max[TSource,TResult](IQueryable`1 source, Expression`1 selector)

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• launch android activity from non-activity class

  - by Alberto Barrera

  im New on Android. I know theres a lot of similar Questions but anyone is helping. Im using a 3rd party app that just launch a class that extends their own class. So from that class i would like to launch an activity. public class SkyTest extends VtiUserExit { @Override public VtiUserExitResult execute() throws VtiExitException { // TODO Auto-generated method stub logInfo("TEST"); return null; } } How do i launch an activity named MainActivity from here. i tryed this: Context context = null; Intent intent = new Intent(context, MainActivity.class); context.startActivity(intent); but its not working, i know i cant use the null context, but how do i create a context o how it works? Thanks

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• does windows 7 bluetooth stack and API support connection of headsets

  - by markh44

  We need to write code to search for, pair and connect to a bluetooth headset with Windows 7 Embedded. Once connected the headset will be used as a normal windows audio device. We fully control what software is installed on the system so conflicting stacks and similar concerns are not a problem. We would however like to minimize as far as possible installing extra software such as 3rd party stacks. Therefore my question is: can the built in windows 7 bluetooth stack and C++ API alone be used to create the functionality we need?

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• UINavigationController crashes after pushing 3 views onto stack

  - by joec

  I have a navigation controller, which has the following structure: Category Item Item Detail I can choose a category, and then choose an item to see its details. I can do this twice, i.e. go Back to the list of items and select another item. If i try this a third time, the app crashes, I get objc_msgSend in stack but thats all. But, instead of choosing another item, i go to the list of categories, and choose a different category, I can select two items in that category, before it crashes also. What would be causing this? Thanks

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• Why I am not getting Row value on click using this?

  - by rockers

  $("#grid td:first-child").click(function() { var value = $(this).closest('tr').find('td:eq(2)').text(); // for third column alert(value); var value = $(this).closest('tr').find('td:eq(3)').text(); // for fourth column alert(value); var AccountName = accountid; var x = function() { $(this).click($("#showregiongrid").load('/analyst/ror/regionspeexc/?a=' + AccountName)); } clickTimer = window.setTimeout(x, 300); }); Why i am not getting the row values of eq(2) and eq(3).. is there anyting I am doing wrong? if I delete td:first-child from my click event I am getting null vallues on popup? thanks

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• MySQL cross table regular expression match

  - by Josef Sábl

  I have a web application and I am working on engine that analyzes referals. Now I have table with pageviews along with referes that looks something like this: pv_id referer ------------------------------------------------------------ 5531854534 http://www.google.com/search?ie=UTF-8... 8161876343 http://google.cn/search?search=human+rights 8468434831 http://search.yahoo.com/search;_... The second table contains sources definitions like: source regex ------------------------------------------------------------ Google ^https?:\/\/[^\/]*google\.([a-z]{2,4})(\/.*|)$ Yahoo ^https?:\/\/[^\/]*yahoo\.com(\/.*|)$ What I want is third table created by joinin these two: pv_id source ------------------------------------------------------------ 5531854534 Google 8161876343 Google 8468434831 Yahoo How to join these tables with regular expression?

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• Problem with array of elements of a structure type

  - by kobac

  I'm writing an app in Visual Studio C++ and I have problem with assigning values to the elements of the array, which is array of elements of structure type. Compiler is reporting syntax error for the assigning part of the code. Is it possible in anyway to assign elements of array which are of structure type? typedef struct { CString x; double y; } Point; Point p[3]; p[0] = {"first", 10.0}; p[1] = {"second", 20.0}; p[2] = {"third", 30.0};

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• cutting a text file into multiple parts in emacs

  - by Gaurish Telang

  Hi I am using the GNU-Emacs-23 editor. I have this huge text file containing about 10,000 lines which I want to chop into multiple files. Using the mouse to select the required text to paste in another file is the really painful. Also this is prone to errors too. If I want to divide the text file according to the line numbers into say 4 file where first file:lines 1-2500 second file:lines 2500-5000 third file :lines 5000-7500 fourth file: lines: 7500-10000 how do I do this? At the very least, is there any efficient way to copy large regions of the file just by specifying line numbers

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• How do I digitally sign an HTTPS request in .net?

  - by Endy Tjahjono

  Is there a built in procedure to digitally sign an HTTPS request with client's SSL private key in .net? Also, is there a built in procedure to verify the digital signature against an SSL certificate? Or do I have to roll my own? Or is there a third party library? I need the request to be digitally signed because the client manipulates money, so I want to be sure that the request really comes from the client and that nobody tampers with the content of the request. I'm also considering using SSL client certificate, but it can only provide confidentiality and authentication, but not data integrity.

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• Set database based on how the application was started

  - by AaronThomson

  I have two Rails applications (lets call them APP-1 and APP-2), each of them has a dependancy on a third Rails application (APP-3). I would like to be able to run the tests for APP-1 and APP-2 in parallel on my CI server. The problem is, both need to start up APP-3 and write to a DB via the APP-3. This causes conflicts and failures if the tests are run in parallel. My idea for a solution is for APP-1 and APP-2 to each start their own instance of APP-3 and to have each instance point to a different DB. Is there a way to dynamically set the DB in the database.yml of APP-3 so that it connects to a different DB depending on which APP starts it up? FYI. APP-1 and APP-2 currently start APP-3 via rake tasks.

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• Parsing XML with nodes containing underscores.

  - by alvincrespo

  How do I parse an XML document that contains nodes where underscores exist? <some_xml> <child_node> <child width_info="" height_info="" /> </childnode> </some_xml> I tried this: for each (var item:XML in Environment._XMLData.some_xml.child_node.child){ trace(child.@width_info); } But that does'nt seem to work. I can't change the XML either because its from a third party. Any help would be great. Thanks in advance!

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• SQL Command for the following table.

  - by Sanju

  I have a table named with "Sales" having the following columns: Sales_ID|Product_Code|Zone|District|State|Distributor|Total_Sales Now i want to generate a sales summary to view the total sales by zone and then by district and then by State by which distributor for the last/past month period. How can i write a Sql Statement to do this? Can anyone help me Plz. Thanks in advance. And i have another question that, how can i select the second largest or third largest values from any column of a table.

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• What are your favorite extension methods for C#? (codeplex.com/extensionoverflow)

  - by bovium

  Let's make a list of answers where you post your excellent and favorite extension methods. The requirement is that the full code must be posted and a example and an explanation on how to use it. Based on the high interest in this topic I have setup an Open Source Project called extensionoverflow on Codeplex. Please mark your answers with an acceptance to put the code in the Codeplex project. Please post the full sourcecode and not a link. Codeplex News: 11.11.2008 XmlSerialize / XmlDeserialize is now Implemented and Unit Tested. 11.11.2008 There is still room for more developers. ;-) Join NOW! 11.11.2008 Third contributer joined ExtensionOverflow, welcome to BKristensen 11.11.2008 FormatWith is now Implemented and Unit Tested. 09.11.2008 Second contributer joined ExtensionOverflow. welcome to chakrit. 09.11.2008 We need more developers. ;-) 09.11.2008 ThrowIfArgumentIsNull in now Implemented and Unit Tested on Codeplex.

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