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• Sql query to get the GrandFather name by doing a self join

  - by mahesh

  Hello all , Can any one please give me the query to get the child name and his grand fathers name For eg - if i have a table Relationships in the i have childid and fatherid columns so how will i get the grandfather, i can easily get the father name by using a join but for grandfather i need to do joins 2 times so can any one help me with this D.Mahesh

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• Advice on how to complete specific MySQL JOIN

  - by Tim

  Hello, I have a mysql table jobs. This is the basic structure of jobs. id booked_user_id assigned_user_id I then also have another table, meta. Meta has the structure: id user_id first_name last_name How can I join these tables so that both booked_user_id and assigned_user_id can access meta.first_name? Thanks for your advice Tim

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• Is it possible to load other applications in Instruments?

  - by zoul

  Hello! I’d like to use Instruments to peek at some third-party applications on my iPhone, is that possible? If I attach Instruments to some of the applications I develop, everything goes well. But when I try to load some other application, Instruments complain that they can’t “get task for pid XY.” Is that a security measure?

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• UITableView Header Selection

  - by Reonarudo

  Hello, Can anyone explain me how can I detect a selection in a table view Header view like in tableView:didSelectRowAtIndexPath: ? It would be very useful for me. I've defined the header as UITableCellView so I could attach a UISwitch as an accessory view, and it worked great but now I can't detect the changes made in the switch. Any suggestions?

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• add sub view in center - iPad

  - by Saurabh

  Hello All, I want to add a sub view in current view, this sub view is 300x300. When I add subview using [self.view addSubview:md.view]; the md.view will appear at position (0,0) is there any way to add subview in center? Thanks

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• Django: Implementing a referral program

  - by Hellnar

  Hello, I have an ecommerce website that works in a classical way: people sign up, buy a product with their CC. It uses the default Django auth system for users and registration and session framework. Now I want to implement a referral system to my system where people can invite other people by giving their referral link (ie mysite.com/referral/123123/ ) and if a person signs up AND buys an item, the inviter gets 5$. How can this the implemented ?

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• One class instance throw all controller

  - by Falcon

  Hello i i have different class and controller. and i need that one instance of model will be available in controller/ now i'm doing something like this: def method1 inst = @MyClass.new(params) inst.action .... def method2 inst = @MyClass.new(params) inst.action .... but i want something like this def method1 @inst.action .... def method2 @inst.action or self.inst i't doesn't matter how i can do it? def self.inst MyClass.new(params) end doesn't work...

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• NSPredicate and arrays

  - by bend0r

  Hello, I've got a short question. I have an NSArray filled with Cars (inherits from NSObject) Car has the @property NSString *engine (also regarded @synthesize ...) Now I want tu filter the array using NSPredicate predicate = [NSPredicate predicateWithFormat:[NSString stringWithFormat:@"(engine like %@)", searchText]]; newArray = [ArrayWithCars filteredArrayUsingPredicate:predicate]; This throws an valueForUndefinedKey error. Is the predicateWithFormat correct? thanks for your responses

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• Ambiguos class name

  - by Pedro Dias

  Hello If have a new project (ProjNew ) where i want to put several classes, that are on other project (ProjOld). The problem is i want to maintain the old classes marked with Obsolete to avoid running all my projects and check if they using it. But in that way this may throw a ambiguos class name error because i didn't explicity call by namespace.. There is an way to say in the obsolete what assymbly to use in ambiguity case=

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• JavaCC: Please give me links to "real" examples.

  - by java.is.for.desktop

  Hello, everyone! I know that there are many examples of JavaCC parsers here, but they all do nothing. They just accept a string, or produce parsing errors. What I need is a few examples of real parsers, which actually do something during parsing. (Such as building a DOM tree during parsing an XML string). Please help! ;)

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• Understanding colors

  - by Ankur Gupta

  Hello everyone, Kindly point towards theory/material to read for understanding colors and what makes a good color combinations. Mind it that I am not interested in say "Color combinations for web application" etc. More of the lines of say "Colors and humans". Material free to read is what i am looking for. Thanks

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• Remove integers in array less than X with PHP

  - by joshli

  Hello. I have an array with integers of values from 0 to 100. I wish to remove integers that are less than number X and keep the ones that are equal or greater than number X. I am using PHP. Thanks!

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• Dijkstra's algorithm to find all the shortest paths possible

  - by Darksody

  Hello, I'm working on Dijkstra's algorithm,and i really need to find all the possible shortest paths,not just one.I'm using an adjacency matrix and i applied Dijkstra's algorithm,and i can find the shortest path.But i need to find all the paths with that minimum cost,i mean all the possible solutions,if they exist.If anyone have an ideea and can help me,i would really appreciate it.A link would be fine too. Thank you.

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• Asp.Net: Storing Principal in httpcontext.current.items

  - by Pickels

  Hello, I was wondering if there are any downsides of storing a custom Principal in httpcontext.current.items instead of the httpcontext.current.user. I know you need to set it for each request but I have to do that with httpcontext.current.user also. thanks in advance, Pickels

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• finding distance between two UK addresses

  - by effkay

  Hello; I need to write an application which is to calculate the estimated driving distance between two UK addresses; I think I can use Google as following: http://maps.google.com/maps/nav?q=from:London%20to:Dover However, anyone knows what is the daily/monthly limit of querying the database from a single IP address? I need to implement in a commercial application (freight services), is there any reliable alternative? Development language/platform: C#, .NET Regards,

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• Construct a SOAP Request to a WebService using Axis2 Library in Java?

  - by Ruchi Kaur

  Hello, I need to be able to construct a SOAP request using Apache Axis2 and provide the IP address and user agent in the SOAP header to the webservice. Is there a code sample that describes how to do that? Thanks in advance for the help! Best wishes Ruchi Kaur.

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• regular expression to extract @name symbols from tweet

  - by Joey

  Hello All, I would like to use regular expression to extract only @patrick @michelle from the following sentence: @patrick @michelle we having diner @home tonight do you want to join? Note: @home should not be include in the result because, it is not at beginning of the sentence nor is followed by another @name. Any solution, tip, comments will be really appreciated.

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• vb.net getsettings

  - by PandaNL

  Hello, I need a form width a checkbox "Don't show this again" for my winform, but how can i make this so when my Form1 loads it checks the state of the checkbox using the getsettings option? How can is save the checkbox state to the registery? and how do i get the state? If Form2.Checkbox.checked = Getsettings() Then Form2.showdialog Else Goto Skip End IF Skip:

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• Arduino (processing) Library in Netbeans and control

  - by Casper Marcussen

  Hello everyone I am trying to control 4 LEDs and getting analog input from 4 contacts. The program is written in java, so to gain acces to the functions of arduino, such as AnalogRead() and setting an LED to high or low, would importing the processing library let the program use those functions? I was also wondering, if the program, will be transferred to the arduino it self, or the java program will just pull the data from the pins?

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• In blackberry Rounded Border of Manager display as a squre.

  - by Sachin

  Hello everybody I have created a table layout manager by extending a manager. Every thing is working fine but when I tried to create and set rounded border by using BorderFactory it is actually displaying a square instead of rounded square, please help me by send your valuable suggestions. Even though I have tried to add that border to a custom label field that also behave in a same manner.

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• technologies beside scaling web applications in a distributed nature

  - by wik

  Hello, I am interested in theory to scale web applications in a distributed nature, i.e. when there is some platform/stack can be extended by others applications running on different servers, etc. I am researching this field and feels the lack of the right keywords :) Interesting concepts found so far: opensocial through API, like shopify does (shopify it's a hosted ecommerce solution) semantic web not quite sure about this one Am I on the right way or am I lost anything? :) Thanks.

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• Tool to validate HTTP responses?

  - by Earlz

  Hello, I'm going to be messing with some stuff at the raw HTTP level during the next few days and I'd like to make sure I'm following the standard as close as possible. Are there any tools out there to validate the HTTP responses that my server puts out to make sure they conform to the specification?

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• Missing data in ASP.net AjaxToolkit CalendarExtender?

  - by user181421

  Hello, I'm using the CalendarExtender, and it's working fine, but when I submit the textbox date to the server to be saved, it shows as blank. Another textbox I have near the date one, is working fine. Any Idea? TY

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• Child XIB open over Main XIB.

  - by milanjansari

  Hello, i want to open new xib(view) over the Main xib(view). i.e Main (Parent) xib when i click on button inside parent XIB. child xib open over parent xiB, and it should see parent xib. is this possible?

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• regular expression of 0's and 1's

  - by Lopa

  Hello all I got this question which asks me to figure out why is it foolish to write a regular expression for the language that consists of strings of 0's and 1's that are palindromes( they read the same backwards and forwards). part 2 of the question says using any formal mechanism of your choice, show how it is possible to express the language that consists of strings of 0's and 1's that are palindromes?

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