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• Graph Databases' Implementation

  - by user1478153

  I am having trouble visualizing a Graph Database. Visualizing an RDBMS is really very simple and I was able to understand from the first tutorial itself when I started learning it some 4-5 years ago. But I am not able to understand Graph Databases. I am also unable to get any good links on this topic, hence posting this question here. Specifically, I am looking for the following: Some really simple book/link on Graph Dbs Atleast some knowledge on the implementation details of a Graph DB (I hope all Graph DBs would be having atleast a few basic things in common). Thanks a lot in advance guys,

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• How to parse a text file and write the result to an xls file?

  - by Bk

  Hi all i am a junior level SQL developer. I have a situation where I have a text file with 1100 lines of a search result with each line containing a file path and a stored procedure associated with that file. Each line has a structure like the one below: abc\def\ghi\***.cs(40): jkl=******.*****.******, "proc_pqrst", parms); Where abc\def\ghi\***.cs is file path of the file ***.cs. The stored procedure names begin with proc_. I have to extract the ***.cs and the corresponding stored procedure name begining with proc_ and write them to a .xls file. Can some body help me in writing the parsing program to do this? Also can I get a detailed outline on where should I write the code for c# and where should I compile it? This could be a great help as I don't have any knowledge of C#. Thank you, BK.

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• Is WPF a good choice for developing line of business user interfaces?

  - by Randy Minder

  We're debating whether our future Windows UI development should be WinForms or WPF. How have some of you made this decision? Most of our applications are LOB applications, and I'm not sure I see a clear and overwhelming benefit to WPF for these types of applications. However, my knowledge of WPF is limited. I'm also a little concerned that WPF will be in vogue for another couple years and then Microsoft will get tired of it and push something else on us. I guess one argument against this is the fact that Visual Studio 2010 is a WPF application. Thanks.

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• Modbus driver: C vs Java

  - by cpf

  Hi stackoverflow, I am soon going to start a project where I'm required to program a Modbus driver. My initial approach was to want to do it in Java, however my boss has had contact with a company that has experience in Modbus, and they said C is the better language to approach Modbus. So my boss pretty much demanded it to be in C. My C knowledge is not really big, so it would require me to learn enough to get the Modbus driver working in proper and stable order. So, my question to you stackoverflow people with some experience in Modbus: how important could the choice of C vs Java be? The modbus site seems to have Java libraries, if C was so superior to Java in every way, why would they have those libraries? Would it be useful to learn C properly for the advantages that might give?

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• Duplicate a Drupal installation from one server to another

  - by irot

  Hello. I have been developing a Drupal 6 site on my PC using XAMPP. I'm done now, and everything looks peachy. Problem is, I need to put all my content (including custom modules and themes) up onto a staging server which only has a fresh Drupal 6 install on it. I can't imagine having to set up all my custom content types and whatnot all over again on the staging server. So I ask, how does one go about doing what I need to do? Which is essentially duplicating my Drupal install from my PC, to the staging server. The staging server is running Linux, and I develop on a Windows PC, if that helps. Thanks in advance.

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• Resources on wordpress theme-development

  - by Espenhh

  What are the best resources for Wordpress theme-development? I am currently in the phase of starting my own blog, and don't want to use one of the many free themes. I already have a theme for my website, so I want to read about best-practices. Any advice on how to get started would be very welcome :) I have now created my theme (wohoo!), and thought I should summarize the best resources I found. Lets see.. Resources: ThemeTation's three-part guide to create a wordpress-theme from scratch Nettuts.com's guide: How to Create a Wordpress Theme from Scratch (And Part 2) Didn't actually use this, it's a quite new article, but anyway - it's great. It will get a follow-up in the next few days too.. Wordpress.org's own guide on templates Definatly a must-read for everyone new to wordpress-designing.. "The loop" Essential knowledge, also a must-read Directory of all the template tags Used by wordpress to actually output blog-content.. Inspiration: Smashing Magazine's lists: first, one more, yet another one Wordpress.org's theme-directory

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• How do I export and import application services with say MEF?

  - by John Leidegren

  I'm working with MEF right now, but the answer I'm looking for probably is irrelevant to MEF -- it's all dependency injection -- I'm just using MEF terminology as an example here. Short background story, I read this article over at MSDN with focus on Composite Applications In this figure there's three things, the shell, the application services and the modules. So that's a composite application. What I don't fully get is the application services part. What's the service, what does it look like? How do you expose a service through a module and how do you consume a service from a different module? I'd really like to see some neat small code examples, nothing fancy but something to illustrate how all this comes to life (the application services part).

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• How do you sort files numerically?

  - by Zachary Young

  Hello all, First off, I'm posting this because when I was looking for a solution to the problem below, I could not find one on stackoverflow. So, I'm hoping to add a little bit to the knowledge base here. I need to process some files in a directory and need the files to be sorted numerically. I found some examples on sorting--specifically with using the lamba pattern--at wiki.python.org, and I put this together: #!env/python import re tiffFiles = """ayurveda_1.tif ayurveda_11.tif ayurveda_13.tif ayurveda_2.tif ayurveda_20.tif ayurveda_22.tif""".split('\n') numPattern = re.compile('_(\d{1,2})\.', re.IGNORECASE) tiffFiles.sort(cmp, key=lambda tFile: int(numPattern.search(tFile).group(1))) print tiffFiles I'm still rather new to Python and would like to ask the community if there are any improvements that can be made to this: shortening the code up (removing lambda), performance, style/readability? Thank you, Zachary

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• Problem in implementing the Url Rewritting for a Zend Application

  - by Nishant

  Hello everyone, I am doing my first Zend Applicaition and I am finally done with the coding side. But the problem which I have is Client has asked to rewrite the Url's which follows the SEO and as I don't have much knowledge of the Zend Router,I am finding myself helpless this time. Please helo me out.The current Url which I have is... http://localhost.ZendProject.com/keywords/ball and Client needs it like http://localhost.ZendProject.com/keywords/ball and another Url (the search Url) http://localhost.ZendProject.com/search/trends?q=nishant+shrivastava&select=All&Search=Search and the Client wants is http://localhost.ZendProject.com/nishant-shrivastava Please help me out of this problem,because I am totally freaked out thinking of any solution and my mind is also not helping me out.

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• Imitate database in C

  - by Mohit Deshpande

  I am fairly new to C. (I have good knowledge of C# [Visual Studio] and Java [Eclipse]) I want to make a program that stores information. My first instinct was to use a database like SQL Server. But I don't think that it is compatible with C. So now I have two options: Create a struct (also typedef) containing the data types. Find a way to integrate SQLite through a C header file Which option do you think is best? Or do you have another option? I am kind of leaning toward making a struct with a typedef, but could be pursuaded to change my mind.

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• Digital signature integration with software written in java

  - by Serkan Kasapbasi

  hi everyone, i'm extremely rookie on this security field, so please forgive if my questions are dumb. i am asked to convert and migrate couple "Lotus Forms" forms to our software that is written in java. One thing in forms that bother me is digital signatures. These forms can be signed by digital signatures, probably generated by "Silanis Approve-it". as i have said before, i dont have much knowledge about this technology. and strangely couldnt find any tutorial or example of integrating digital signature and java. So what are the possibilities here ? how my code read a digital signature, sign a document with this signature? There should be an API or something that is provided by vendors right :)

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• How to serialize Java primitives using Jersey REST

  - by Olvagor

  In my application I use Jersey REST to serialize complex objects. This works quite fine. But there are a few method which simply return an int or boolean. Jersey can't handle primitive types (to my knowledge), probably because they're no annotated and Jersey has no default annotation for them. I worked around that by creating complex types like a RestBoolean or RestInteger, which simply hold an int or boolean value and have the appropriate annotations. Isn't there an easier way than writing these container objects?

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• What was the most surprising failure of your 'Engineer's intuition'?

  - by Bubba88

  Hi! This may seem as an open-ended question but I'll surely accept the most impressive and upvoted answer ;) Basically, I could describe my own case - I just fail 5 times a day with my intuition cause very frequently I can be just not up-to-the-speed with my requirements/manager/team/etc. and I just have to make code quickly - that's why proper formalization in many cases stands aside. I want to gather some experience of yours - what was the most epic failure when you did rely on you implicit reasoning/intuitive knowledge/immediate perception etc. of course everything you describe should be related to programming/computers. It's mostly just to measure the danger of using that 'it's obvious..' words. I've made it com. wiki to be properly transformed after gathering enough views count. Thank you!

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• Method synonyms in Ruby

  - by Max

  I'm familiarizing myself with Ruby and it's the first time I see synonyms for methods in the standard library. For now I've found the ones in the Enumerable module: collect <- map detect <- find include <- member etc. Probably other modules contains synonymic methods too. Why are they there? Is it some kind of backward compatibility? Or is it a feature of the language, so the programmer can choose between different options depending on the context to make the program look like plain English?

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• Installing Bugzilla on Ubuntu 9.04 and Plesk

  - by makeflo

  Hey guys. I'm trying to install the latest Bugzilla version on my ubuntu server. (Want to use a subdomain like bugs.domain.com) I already installed all necessary perl modules and check_modules.pl doesn't show any errors. But when I'm running the testserver.pl script I get the following: TEST-OK Webserver is running under group id in $webservergroup TEST-FAILED Fetch of images/padlock.png failed I'm also not able to visit ANY file within the bugzilla folder from the browser. I'm always getting a 404 error. The bugzilla folder and all containing files are set to apache as the owner. I tried to enter the apache configuration form the installation guide in the http.include file of the domain and in the vhosts.conf file of the subdomain as well. I don't know what to do... Playing with plesks' suexecgroup doesn't bring any solution... I hope you can help me! Thanks in advance!

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• Language Agnositc Basic Programming Question

  - by Rachel

  This is very basic question from programming point of view but as I am in learning phase, I thought I would better ask this question rather than having an misunderstanding or narrow knowledge about the topic. So do excuse me if somehow I mess it up. Question: Let say I have class A,B,C and D now class A has some piece of code which I need to have in class B,C and D so I am extending class A in class B, class C, and class D Now how can I access the function of class A in other classes, do I need to create an object of class A and than access the function of class A or as am extending A in other classes than I can internally call the function using this parameter. If possible I would really appreciate if someone can explain this concept with code sample explaining how the logic flows.

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• SQL Compact import DB from SQL Server Express with Server Management Studio

  - by Sasha

  Hi! I try to import sql script, generated with Server Management Studio, into SQL Compact 3.5 and get a lot of error. What I am doing wrong? I generate script with "Task/Generate Script" context menu. Part of my script: CREATE TABLE [LogMagazines]( [IdUser] [int] NOT NULL, [Text] [nvarchar](500) NULL, [TypeLog] [int] NOT NULL, [DateAndTime] [datetime] NOT NULL, [DetailMessage] [nvarchar](max) NULL, [Id] [int] IDENTITY(1,1) NOT NULL, CONSTRAINT [PK_LogMagazines] PRIMARY KEY ( [Id] ASC )WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY] ) ON [PRIMARY] Knowledge Base: http://stackoverflow.com/questions/1525063/how-to-import-data-in-sql-compact-edition http://stackoverflow.com/questions/1515969/exporting-data-in-sql-server-as-insert-into/1515975

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• Is it wrong to get feedback from Stack Overflow on a live system architecture?

  - by hal10001

  I am the technical director at a startup, and I will eventually be tasked with implementing a "real" system architecture when we hire more programmers. Right now our clients are small enough, and it is just me, so documented deployments, source control, unit tests and quality assurance servers are non-existent. Eventually I will need to devise a work-flow and architecture patterns for the majority of the work we will do (e-commerce). If I posted an architecture diagram, and asked for feedback, would that be a misuse of the Stack Overflow system? I don't want to get into that battle of "hey, don't ask us to do your job for you", but the reality is that any programmer who eventually moves into this realm will have to figure it out with feedback from other developers. HighScalability.com is what comes to mind when I think about this sorta thing in terms of the knowledge I need. So if this is not the right kind of forum for that, then any book recommendations or white papers you can recommend would be appreciated.

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• AppDomain.UnhandeledException event not fired

  - by Yaakov Davis

  In a WPF application, the app simply crashes, without the above event being fired. (I'm also registered to DispatcherUnhandeledException, which doesn't fire as well.) I conclude that it doesn't fire since the handler is defined to place a log entry. When looking at the log, there's no corresponding entry. It happens in a production environment; I'm unable to point at a particular scenario. I've read few descriptions on scenarios where this might happen, but I still don't have a clear grasp on this. Can anyone share his experience / knowledge on this? How can I find the root of the crash and solve it? Many thanks.

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• Parse and display MIME multipart email on website

  - by aidan

  I have a raw email, (MIME multipart), and I want to display this on a website (e.g. in an iframe, with tabs for the HTML part and the plain text part, etc.). Are there any CPAN modules or Template::Toolkit plugins that I can use to help me achieve this? At the moment, it's looking like I'll have to parse the message with Email::MIME, then iterate over all the parts, and write a handler for all the different mime types. It's a long shot, but I'm wondering if anyone has done all this already? It's going to be a long and error prone process writing handlers if I attempt it myself. Thanks for any help.

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• Can I resolve ASP.NET "~" app paths to the website root without a Control being present?

  - by jdk

  I want to Resolve "~/whatever" from inside non-Page contexts such as Global.asax (HttpApplication), HttpModule, HttpHandler, etc. but can only find the Resolution methods specific to Controls (and Page). I think the app should have enough knowledge to be able to map this outside the Page context. No? Or at least it makes sense to me it should be resolvable in other circumstances, wherever the app root is known. Update: The reason being I'm sticking ~ paths in the web.configuration files. Update 2: I'm trying to resolve them to the website root such as Control.Resolve(..) URL does, not to a file system path.

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• Characters in string changed after downloading HTML from the internet.

  - by Callum Rogers

  Using the following code, I can download the HTML of a file from the internet: WebClient wc = new WebClient(); // .... string downloadedFile = wc.DownloadString("http://www.myurl.com/"); However, sometimes the file contains "interesting" characters like é to é, ? to ↠and ????? to フシギダãƒ. I think it may be something to do with different unicode types or something, as each character gets changed into 2 new ones, perhaps each character being split in half but I have very little knowledge in this area. What do you think is wrong?

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• WCF Advanced Books

  - by hgulyan

  Hi, I've read all questions like mine and found a few good links. My question is about architect of WCF, how it is designed, how is generated reference.vb, wsdl and xsd files. How can I do that manually, some good examples of WCF Systems (mostly on desktop applications over TCP). I'd like a book or documentation or anything else, that can give me advanced knowledge of WCF. What do you think of this book http://www.amazon.com/Professional-WCF-Windows-Communication-Foundation/dp/0470563141/ref=sr_1_5?ie=UTF8&s=books&qid=1269425390&sr=8-5 ? And generally is there any source that would give me this all or the only way is practising, trying, looking in all that generated files and reading documentations? Thank you.

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• Tough question on WPF, Win32, MFC

  - by Mack

  Let's suppose you're an IT student with a basic knowledge of C++ and C#. Let's suppose that you want to design apps that: need to deliver some performance like archivers, cryptographic algorithms, codecs make use of some system calls have a gui and you want to learn an Api that will enable you to write apps like those described earlier and: is mainstream is future proof entitles you to find a decent job is easy enough - I mean easy like VCL, not easy like winapi So, making these assumptions, what Api will you choose? MFC, WPF, other? I really like VCL and QT, but they're not mainstream and I think few employers will want you to write apps in QT or Visual C++ Builder... Thanks for answers.

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• Execuitng script in threads

  - by Pedro Magalhaes

  Hi. I wanna make an app that executes remote scripts. I am going to design it like a Windows Service that listen on tcp/ip port. Every new request I will execute a python scripts. So I can handle any number of tcp/ip request at same time, so I will need to execute python script in separate threads. How can I do that? Is that simple? The script will share some objects, like Log files(text files) and other modules. In the log file example every script will write in the same file. So the app (windows service) will be responsible for do that. I need to make this objects thread safe, right?

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