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• xpath: determining if the customer has orders

  - by deostroll

  There is an xml dump of the Northwind database here. Document structure is something like: <NorthWind> <Customers></Customers> <Customers></Customers> . . . <Orders></Orders> <Orders></Orders> . . . </NorthWind> Each Customers tag will hold one customer information. Now while I select all Customers how do I furnish a field such that it indicates whether the customer has orders or not; something like a boolean field

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• mySQL INSERT INTO SELECT not working

  - by Industrial

  Hi everyone, I am trying to implement the "Closure Table" structure in a php/mySQL webapp from Bill Karwins "SQL Antipatterns" slideshare presentation: http://www.slideshare.net/billkarwin/sql-antipatterns-strike-back The first step is to insert some stuff into my tree (page 73 in slide): Easy to insert a new child of comment #5: INSERT INTO Comments ... (Generates comment #8) INSERT INTO TreePaths (ancestor, descendant) VALUES (8, 8); INSERT INTO TreePaths (ancestor, descendant) SELECT ancestor, 8 FROM TreePaths WHERE descendant = 5; I try to translate all this into Codeigniters active record db-style language, and that's about where I get stuck. I cant understand how the second insert gets it's values. Is there anyone out there who can help me out with this?

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• Zend Server CE Apache mod_rewrite REQUEST_FILENAME SCRIPT_FILENAME Problem

  - by liumiuyong

  Hi,there! I use this .htaccess file in a project: RewriteCond %{SCRIPT_FILENAME} !-f RewriteCond %{SCRIPT_FILENAME} !-d RewriteRule ^(.*)$ index.php/$1 [L] It works well in Apache 2.2 Recently I started to use Zend Server CE , the ReWrite Rule didn't work ! And this works: RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^(.*)$ index.php/$1 [L] This is what Apache's document say: The variables SCRIPT_FILENAME and REQUEST_FILENAME contain the same value - the value of the filename field of the internal request_rec structure of the Apache server. The first name is the commonly known CGI variable name while the second is the appropriate counterpart of REQUEST_URI (which contains the value of the uri field of request_rec). Anyone can figure out why? Appreciate!

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• Proper way to build a data Repository

  - by rockinthesixstring

  I'm working on using the Repository methodology in my App and I have a very fundamental question. When I build my Model, I have a Data.dbml file and then I'm putting my Repositories in the same folder with it.... IE: Data.dbml IUserRepository.cs UserRepository.cs My question is simple. Is it better to build the folder structure like that above, or is it ok to simply put my Interface in with the UserRepository.cs? Data.dbml UserRepository.cs              which contains both the interface and the class

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• svnant: How to checkout specified URLs from a repository?

  - by Mike

  Hi all: i'm using SVNant to checkout a repository, the total repository content is so large and i'm only interest in a few file and directories, the repository structure as below: project folder1 folder2 largefolder largefile1 largefile2 folder3 fileilike1.txt fileilike2.txt file.txt file2.txt etc... i'm only interest in the files under project/ folder such as file.txt and file2.txt, and also all files under folder3. i do not want to checkout largefolder/ because it has extra-large files in it. how to write the svnant script? i use ignore but seems not work.

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• Opinions sought on the best way to organise classes in PHP

  - by jax

  I am pretty much set on using the Java package naming convention of com.website.app.whatever but am unsure about the best way of doing this in PHP. Option 1: Create a directory structure com/ mysite/ myapp/ encryption/ PublicKeyGenerator.class.php Cipher.class.php Xml/ XmlHelper.class.php XmlResponse.class.php Now this is how Java does it, it uses the folders to organize the heirarchy. This is however a little clumsy in PHP because there is no native support for it and when you move things around you break all includes. Option 2 Name classes using a periods for the package, therefore sames are just like in Java but can all be in the same directory making __autoload a breeze. classes/ com.mysite.myapp.encription.PublicKeyGenerator.class.php com.mysite.myapp.encription.Cipher.class.php com.mysite.myapp.xml.XmlHelper.class.php com.mysite.myapp.xml.XmlResponse.class.php The only real disadvantage here is that all the classes are in a single folder which might be confusing for large projects. Opinions sought, which is the best or are there other even better options?

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• How to replace the image ?

  - by master123

  Below code displays the tree structure.When i click on the image Pic.gif,it has to get replaced by new image.Similarly pic1.gif to new image,pic6.gif to new image.Can you help mw with the code where exactly it fits in this code ???? var children = [{ text: 'family', icon: 'pic1.gif', children: [{ text: 'parent1', icon: 'pic2.gif', children: [{ icon: 'pic3.gif', text: 'children1', leaf: true}, { icon: 'pic4.gif', text: 'children2', leaf: true}, { icon: 'pic5.gif', text: 'children3', leaf: true}]}], }, { text: 'Parent2', icon: 'pic6.gif', children: [{ icon: 'pic7.gif', text: 'children4', leaf: true}, { icon: 'pic8.gif', text: 'children5', leaf: true}, { icon: 'pic9.gif', text: "children6", leaf: true}]}]; Ext.onReady(function() { var tree = new Ext.tree.TreePanel({ loader: new Ext.tree.TreeLoader(), width: 1000, height: 1000, renderTo: Ext.getBody(), root: new Ext.tree.AsyncTreeNode({ expanded: false, leaf: false, icon: 'pic.gif' , text: 'Head', children: children }) }); });

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• Problem in packages in importing in Eclipse

  - by user384706

  Hi (I am using Galileo), I am trying to import some existing projects into Eclipse. The structures for their packages is: Project/ /src /java /a /b /c Once imported in the package explorer I see: Project src/java --a --b --c - AClass.java This is ok, since the classes e.g. AClass.java are defined in package: a.b.c But in one project the structure (once imported) becomes: Project src --java --a --b --c - AClass.java And that causes the error that AClass.java is defined to be in package a.b.c but it is actually under java.a.b.c Why is this happening? Why in this specific project java is not ignored as part of package? Thanks

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• Looping differences in Ruby using Range vs. Times

  - by jbjuly

  I'm trying to solve a Project Euler problem using Ruby, I used 4 different looping methods, the for-loop, times, range and upto method, however the for-loop and times method only produces the expected answer, while the range and upto method does not. I'm assuming that they are somewhat the same, but I found out it's not. Can someone please explain the differences between these methods? Here's the looping structure I used # for-loop method for n in 0..1 puts n end 0 1 => 0..1 # times method 2.times do |n| puts n end 0 1 => 2 # range method (0..1).each do |n| puts n end 0 1 => 0..1 # upto method 0.upto(1) do |n| puts n end 0 1 => 0

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• help implementing algorithm

  - by davit-datuashvili

  http://en.wikipedia.org/wiki/All_nearest_smaller_values this is site of the problem and here is my code but i have some trouble to implement it import java.util.*; public class stack{ public static void main(String[]args){ int x[]=new int[]{ 0, 8, 4, 12, 2, 10, 6, 14, 1, 9, 5, 13, 3, 11, 7, 15 }; Stack<Integer> st=new Stack<Integer>(); for (int a:x){ while (!st.empty() && st.pop()>=a){ System.out.println( st.pop()); if (st.empty()){ break; } else{ st.push(a); } } } } } and here is pseudo code from site S = new empty stack data structure for x in the input sequence: while S is nonempty and the top element of S is greater than or equal to x: pop S if S is empty: x has no preceding smaller value else: the nearest smaller value to x is the top element of S push x onto S

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• Get records based on child condition

  - by Shawn Mclean

  In LINQ To Entities: How do I get the records (including both child and parent) based on a condition of the child in a one to many. My structure is set up as follows: GetResources() - returns a list of Resources. GetResources().ResourceNames - this is the child, which is an entity collection. GetResources().ResourceNames - a property of one record of this child is Name. I'd like to construct something like this: return (from p in repository.GetResources() where p.ResourceNames.Exist(r => r.Name.Contains(text, StringComparison.CurrentCultureIgnoreCase)) select p).ToList(); but of course, Exist doesn't exist. thanks.

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• help for writting a regular expression in javascript

  - by Majesty

  Hi guys... I want to write a javascrpit code with .Split() that split a string with structure described below: The input: W1...Wn=S1...||...Sm||Sj...Sk|Y1...Yn=D1...Di||Dm...Dn|... The Output: W1...Wn=S1...||...Sm||Sj...Sk Y1...Yn=D1...Di||Dm...Dn ... I've seen the question that split this string: a=aa|b=b||b|c=cc . but my question is general case of that question. please help me... Thanks...

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• need to find differences between 2 identically structured sql tables

  - by balalakshmi

  I need to find differences between 2 identically structured sql tables Each table is being uploaded from a 3rd paty tool into sqlserver database. The table structure is: Issue ID-status-Who Issue ID will not repeated within a table, though its not defined explicitly as primary Key There could be additions/deletions/Updations between any 2 tables. What I need Number of rows added & their details Number of rows deleted & their details Number of rows deleted & their details How do I do this 1) is it better to use sql 2) or use datatables

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• Java Swing architecture for flipping through JPane based views

  - by imhotep

  Hi all, I have done a couple of simple swing based apps with static layout, but now I've run into a problem while trying to create an app containing multiple views which are changed by pressing appropriate navigational button. You could compare the idea to a website so that every view has buttons to access certain other views but this would work inside a single JFrame. I've found that maybe CardLayout (Cardlayout example) might be appropriate solution for this kind of structure, but I'm unable to figure out a way to switch the views from the buttons which are inside of the JPanes that I've implemented in their separate classes, Of course one way would be to instantiate everything in the parent class like in the small java tutorial example, but this isn't quite clean nor modular for multiple views, isn't it. How can this be implemented so that I can access the view switching method?

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• Flexible Data source for Multi-Section Table View Controller

  - by TuanCM

  I have a TableViewController which display a list of NewsItem objects: @interface NewsItem : NSObject { NSString *feedID; NSString *title; NSDate *published; } I'm trying to implement a Table View Controller (multiple sections) that can display the list in two ways: One divide News Items into sections which based on Published Date The other would be based on FeedID (News source). And I don't know how to structure the data source so that the code is easy to maintain. I tried to put the list of News Items into a 2 dimension Array in this case is a NSMutableArray of NSArray objects. However I got some objc_exception_throw and I don't think this is flexible enough. Could you guys give me some ideas?

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• Implementing a recursive menu system a'la Joomla in CodeIgniter

  - by pettersolberg

  Hi I have some sites powered by Joomla, but with my current assignment I wanted to try something new and created with CodeIgniter a really basic CMS (just to suit my client's needs). Everything works fine except menus - multilevel menus like in Joomla, Drupal etc. with items and subitems... My question is: do you know of any tutorials or texts abut implementing such a structure. I've tried the recursion thinggy with while getting children's IDs move downwards from the parent while searching for the currently displayed item's ID. I've tried also the Drupalish way with having a path parameter enclosing ID's all the way from top to bottom '1/23/123/3'. But all in all it was just too chaotic - code something, try it out. If you have some idea on this topic - thanks in advice.

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• Import C + Makefile into a linux IDE?

  - by Jessica

  I have a project for Linux that i've been developing for some time. Basically it's a bunch of C and H files together with a directory structure and a Makefile. Every time I need to debug something it's so painful, I need to manually search for var. definitions, structs, etc. Is there any good IDE out there for Linux that will allow me to import those files into a "project" and that will provide code completion or at least an easy way to get my bearings in the source code? thanks!

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• Suggested C++ books?

  - by Josh Bradley

  Ok, I've had one semester of C++ and will be taking a second semester in it after I have taken a Data Structure class this fall. In the first class, we dealt mainly with C++ syntax and the textbook we used was ok, but now I'm wanting to go ahead and purchase a great C++ book that encompasses a lot of the programming concepts used today. I'm learning Objective-C on my own and was able to get through the whole object-oriented stuff pretty easily, along with other things like pointers, inheritance, delegation, etc. It doesn't have to exactly have EVERYTHING in it, but I do want to buy the book with the most information in it. Money is no problem. So my question is what book did you use or still use for C++? Is it a book that you can reference back to if you ever forget how to do something small, or would you have to go online and find the answer.

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• How do I resolve this scope issue in VB .NET?

  - by froadie

  I have a code structure something like this: For row = 1 To numRows Dim arrayIndex As Integer = 0 For column As Integer = bucketStartColumn To bucketEndColumn ' whatever code arrayIndex = arrayIndex + 1 Next Next Dim arrayIndex As Integer = 0 For column As Integer = bucketStartColumn To bucketEndColumn ' whatever code arrayIndex = arrayIndex + 1 Next Not exactly the code, so I don't really need suggestions about refactoring, but my problem is this - with this code I get a compiler error for the first Dim arrayIndex As Integer = 0 - "Variable 'arrayIndex' hides a variable in an enclosing block." As far as I can tell, arrayIndex is local to the first for loop and shouldn't exist by the time we reach the second loop. If I try to change the second declaration of arrayIndex to arrayIndex = 0, I get the error "Name 'arrayIndex' is not declared", as I expected. So is it visible, or not? Does this have something to do with the Dim keyword? Any suggestions of how to get around this, other than naming the second index variable something else?

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• Retrieving xml value into a string

  - by DelvinK

  Hello, In the following XML structure how do i retrieve the name value and put this into a string? (i am using a XPathNavigator in my method) <testsystem> <test> <name>one</name> </test> </testsystem> I was able to get a attribute with a syntax alike this: (but when changing the xml struture it no longer holds a attribute value) string name = nav.GetAttribute("name", "") But have no luck getting the value with a nav as of yet. The purpose is to be able to use it for the following object so i can put name into it. test t = new test() { Name = name, Questions= new List<Questions>() }; Best regards.

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• get the installed path of a vb.net application

  - by Matt Facer

  Hi guys... I'm nearly ready to distribute my vb.net application. I have several picturebox files which are loaded currently from c:/temp I need to change this directory to one that will be OK to use when the user installs it to their PC. My question is how can I do this? Is there a way to get the installation path, then use that within the code as a variable? eg: myInstalledPath & "/xxx.jpg" Or... would it be better for me to use mypictures within the mydocuments structure? I'd rather keep all the image files created in a folder which is more hidden from the user (by hidden I mean not cluttering up their own image folders!) I've tried searching for this, but I seem to get varying results with no real answers... (possibly searching for the wrong thing!)

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• What is Restful Routing?

  - by John Baker

  I have been searching pretty hard for info out on the net to explain exactly what Restful routing is but I haven't had any success. There are a lot of resources but not a who lot make sense to me. I'm familiar with Ruby On Rails's routing system and well as how Code Igniter and PhpCake route things but is there more to it than having a centralized location where you give out routes based on a directory structure? Like this: controller/action/id/ Admin/editUser/22 I'd appreciate any help with this, it's had me baffled for months. I just thought of putting it on SO. Thanks

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• Write to a binary file?

  - by rick irby

  Here is data structure w/ variables: struct Part_record { char id_no[3]; int qoh; string desc; double price: }; --- (Using "cin" to input data) --- Part_record null_part = {" ", 0," ",0.0}; --- --- file.seekg( -(long)sizeof(Part_record), ios::cur); file.write( ( char *)&part, sizeof(Part_record) ); The three variables, qoh, Id_no & price, write out correctly, but the "desc" variable is not right. Do I need to initialize Part_record some other way? It should be 20 characters in length. If you have enough info here, pls share your advice,thanks.

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• Should I learn Haskell or F# if I already know OCaml?

  - by Unknown

  I am wondering if I should continue to learn OCaml or switch to F# or Haskell. Here are the criteria I am most interested in: Longevity Which language will last longer? I don't want to learn something that might be abandoned in a couple years by users and developers. Will Inria, Microsoft, University of Glasgow continue to support their respective compilers for the long run? Practicality Articles like this make me afraid to use Haskell. A hash table is the best structure for fast retrieval. Haskell proponents in there suggest using Data.Map which is a binary tree. I don't like being tied to a bulky .NET framework unless the benefits are large. I want to be able to develop more than just parsers and math programs. Well Designed I like my languages to be consistent. Please support your opinion with logical arguments and citations from articles. Thank you.

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• Accessing the next 3 element values in a Map knowing the key.

  - by Rachel

  I have java.util.LinkedHashMap with Integer as Key and Character as Value. I know the key of the element i want to access. In addition to the element value for the key, i also want to retrieve the next 3 element values so that i can append all the 4 element values and form a string with 4 chars. I am asking for something like how we will do in a java.util.List. Is this feasible by any means in a Map/ordered map? Please suggest any other data structure that can help me achieve this. I am using Java 6.

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