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• how to generate dbml file from Sybase database?

  - by 5YrsLaterDBA

  I think we may have trouble with our existing project. For some reasons we have to switch from SQL Server to Sybase SQL Anywhere 11. now we trying to find a way continue use our existing LINQ code. We wish we can still use L2S? If cannot, we wish we can use L2E, then we have to change to ADO. how to generate dbml file from Sybase Anywhere 11? after that can we use sqlmetal to generate .cs files?

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• Help to translate SQL query to Relational Algebra

  - by Mestika

  Hi everyone, I'm having some difficulties with translating some queries to Relational Algebra. I've a great book about Database Design and here is a chapter about Relational Algebra but I still seem to have some trouble creating the right one: Thoes queries I've most difficuelt with is these: SELECT COUNT( cs.student_id ) AS counter FROM course c, course_student cs WHERE c.id = cs.course_id AND c.course_name = 'Introduction to Database Design' SELECT COUNT( cs.student_id ) FROM Course c INNER JOIN course_student cs ON c.id = cs.course_id WHERE c.course_name = 'Introduction to Database Design' and SELECT COUNT( * ) FROM student JOIN grade ON student.f_name = "Andreas" AND student.l_name = "Pedersen" AND student.id = grade.student_id I know the notation can be a bit hard to paste into HTML forum, but maybe just use some common name or the Greek name. Thanks in advance Mestika

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• Where can I find a comprehensive reference for Zen Cart variables and overrides?

  - by Angelina

  Hi everyone, I'm working with Zen Cart for a client and I'm having a bit of trouble finding a practical, concise resource that gives reference to the most common template variables and overrides. This project is fairly superficial so that is all I need - but bonus points if you find something that goes a little bit deeper. Please note that I am looking for something that is 'at a glance', like a reference card. I have already looked at several books on Zen Cart, but most of them are designed for the end user or a sysadmin at most and leave much to be desired.

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• How to create a folder for each item in a directory?

  - by Adrian Andronic

  I'm having trouble making folders that I create go where I want them to go. For each file in a given folder, I want to create a new folder, then put that file in the new folder. My problem is that the new folders I create are being put in the parent directory, not the one I want. My example: def createFolder(): dir_name = 'C:\\Users\\Adrian\\Entertainment\\Coding\\Test Folder' files = os.listdir(dir_name) for i in files: os.mkdir(i) Let's say that my files in that directory are Hello.txt and Goodbye.txt. When I run the script, it makes new folders for these files, but puts them one level above, in 'C:\Users\Adrian\Entertainment\Coding. How do I make it so they are created in the same place as the files, AKA 'C:\Users\Adrian\Entertainment\Coding\Test Folder'?

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• Using Sqlite3 with CakePHP

  - by Dan

  Hello, I'm trying to run Sqlite3 with CakePHP. Yes, i know it's not officially supported, but this post here: http://stackoverflow.com/questions/1021980/cakephp-sqlite says it's possible. I've downloaded the new driver file "dbo_sqlite3.7.php" and put it in "cake/libs/model/datasources/dbo". Now I'm having trouble getting connected to the db. Things I'm confused on: Where should my database.sqlite file be kept What should my config file look like. Should I be referencing the full filename of the driver? Like 'driver' = 'dbo_sqlite3.7.php'? And can I use relative paths to the db file? Is there a difference in sqlite3 files and sqlite2 files by themselves, or is it just the way that you handle the files that makes the difference? Thank you for your help. I'm new to cake and I'm excited about learning more.

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• How to sketch out an event-driven system?

  - by Jordan

  I'm trying to design a system in Node.js (an attempt at solving one of my earlier problems, using Node's concurrency) but I'm running into trouble figuring out how to draw a plan of how the thing should operate. I'm getting very tripped up thinking in terms of callbacks instead of returned values. The flow isn't linear, and it's really boggling my ability to draft it. How does one draw out an operational flow for an event-driven system? I need something I can look at and say "Ok, yes, that's how it will work. I'll start it over here, and it will give me back these results over here." Pictures would be very helpful for this one. Thanks. Edit: I'm looking for something more granular than UML, specifically, something that will help me transition from a blocking and object-oriented programming structure, where I'm comfortable, to a non-blocking and event driven structure, where I'm unfamiliar.

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• Routing Users to single Models with Rails

  - by Eric Koslow

  I'm creating a Rails app for students and high schools and I'm having some trouble with my User.rb. I want to have a user model to be used for logging in, but having that user have many roles. The tricky part is that I want users that have a student role to have_one student page, and those that have a role of principal to have_one high_school page. The students and also nested in the high_school so the entire thing becomes a big mess. So my question(s): How do I limit a user to only creating one student / high school to represent them? Also how would I nest this student pages inside the highschool without screwing up the user system? My environment: Rails3 and Ruby 1.9.2dev Thank you!

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• Algorithm to detect no movable pieces in Stratego.

  - by maleki

  I am creating a Stratego Game and am having trouble creating an algorithm that can detect when there are no more possible moves because all your pieces are gone or the remaining pieces are unmovable or trapped by forbidden squares, unmovable pieces, or other trapped pieces. For simplicity you can think of the board as an array of Squares which can contain pieces. Square[][] gameBoard = new Square[10][10] Squares have easily checkable state such as hasPiece(), hasEnemyPiece(), hasUnMovablePiece(), hasMoveablePiece(), isBlocked(). It would also probably be nice if this algorithm wasn't run every time a player moved but maybe checked in the beginning and then only certain conditions were checked when the player moved.

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• Cannot enter input with gdb. Help!

  - by Carlos Nunez

  Hi, all. I've been having a tough time entering input with gdb using XCode or Eclipse. Every time the debugger hits std::cin, it looks like its waiting for input, but fails to accept it. I've scoured the internet for more information, but am having trouble finding anything. What do I need to do to get cin to work with gdb? For reference, I'm using XCode 3.2.2 and Eclipse Galileo. Thanks! -Carlos Nunez

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• Smooth Error in qplot from ggplot2

  - by Jared

  I have some data that I am trying to plot faceted by its Type with a smooth (Loess, LM, whatever) superimposed. Generation code is below: testFrame <- data.frame(Time=sample(20:60,50,replace=T),Dollars=round(runif(50,0,6)),Type=sample(c("First","Second","Third","Fourth"),50,replace=T,prob=c(.33,.01,.33,.33))) I have no problem either making a faceted plot, or plotting the smooth, but I cannnot do both. The first three lines of code below work fine. The fourth line is where I have trouble: qplot(Time,Dollars,data=testFrame,colour=Type) qplot(Time,Dollars,data=testFrame,colour=Type) + geom_smooth() qplot(Time,Dollars,data=testFrame) + facet_wrap(~Type) qplot(Time,Dollars,data=testFrame) + facet_wrap(~Type) + geom_smooth() It gives the following error: Error in [<-.data.frame(*tmp*, var, value = list(NA = NULL)) : missing values are not allowed in subscripted assignments of data frames What am I missing to overlay a smooth in a faceted plot? I could have sworn I had done this before, possibly even with the same data.

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• Parsing XML using xml.etree.cElementTree

  - by Andre

  I have the following XML in a string named 'xml': <?xml version="1.0" encoding="ISO-8859-1"?> <Book> <Page> <Text>Blah</Text> </Page> </Book> I'm trying to get the value Blah out of it but I'm having trouble with xml.etree.cElementTree. I've tried the find() and findtext() methods but nothing. Eventually I did this: import xml.etree.cElementTree as ET ... root = ET.fromstring(xml) element = root.getchildren()[0].getchildren()[0] Element now equals the element, which is what I want (for this solution anyway), but how do I get the inner text from it? element.text does not work. Any ideas? PS: I am using Python 2.5 atm. As an extra question: what is a better way to parse xml strings in python?

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• Nullreferenceexception when adding a GData.Extensions.Reminder to Reminders

  - by user283182

  Hello again, I think the title says it all. I'm using Reminder fifteenMinReminder = new Reminder(); fifteenMinReminder.Minutes = 15; fifteenMinReminder.Method = Reminder.ReminderMethod.email; entry.Reminders.Add(fifteenMinReminder); on a brand new entry (where Reminder and Reminders are Nothing), but I cannot add a reminder using the above code (taken straight from the Google Docs), or set the entry.Reminder to fifteenMinReminder directly either. What am I doing wrong? I've had no trouble .adding When and Where's to the entry, but the Reminder doesn't want to follow the same pattern. Any ideas?

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• Raphael js library: problems with animateAlong in IE7

  - by Andrei

  Hi there, I'm having trouble making a simple shape move along a path in IE7 (the only version of IE I tried, actually). The following code works fine in chrome and firefox, but not IE. I couldn't find an obvious reason, has anybody seen something similar? canvas.path(rPath.path).attr("stroke", "blue"); var circle = canvas.circle(rPath.startX, rPath.startY, 5); circle.animateAlong(rPath.path, 3000, true); My rPath variable has the path and the starting point coordinates. Microsoft script debugger points to this line as the one where the code breaks: os.left != (t = x - left + "px") && (os.left = t); (line 2131 inside the uncompressed raphael.js script file, inside Element[proto].setBox = function (params, cx, cy) {...}) Any ideas? Any experience (good or bad) with raphael's animateAlong in IE7? TIA, Andrei

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• Cloning a read-write github repository using TortoiseHg

  - by Nathan Palmer

  I'm trying to clone my personal fork on github using the git+ssh protocol with TortoiseHg. It's giving me a rather strange error. Here is the command hg clone git+ssh//[email protected]:myusername/thefork.git This is after I have installed the hg-git module and it works just fine to clone using the git:// syntax. But I believe it's having trouble with the ssh. The error I'm getting is this. importing Hg objects into Git [Error 2] The system cannot find the file specified I have tried adding manually the ssh command into the mercurial.ini file like this [ui] username = [email protected] ssh="C:\Program Files\TortoiseHg\TortoisePlink.exe" -ssh -2 -i "C:\Source\SSHPrivateKey.ppk" But I still get the same error. Any ideas? Thanks.

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• What is the delegate method that is called when an MKPinAnnotationView is touched?

  - by Jake Schwartz

  I have been searching for this all night and I have just so frustrated. When a MKPinAnnotationView is clicked, the name and the subtitle comes up. I also want to center that point on the view. I figured there was some method I had to override because the information that pops up happened without me having to code it. Hopefully this was clear enough for you all. And in the mean time, I feel like there is some hidden guide on this use of MKMaps and other classes. Either that or it is terribly documented because I am having a lot of trouble finding information. Thanks.

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• How to reset ASP.NET MVC client validation mode?

  - by Morten Christiansen

  I'm having a bit of trouble with the client-side validation in the ASP.NET MVC 2 framework and hope someone can help me out. In several situations I find it useful to be able to reset the contents of a form or just a single input element and I need any validation errors to disappear. This in itself is not very hard, and the suggestion provided here works well enough: http://stackoverflow.com/questions/2798427/how-do-i-clear-mvc-client-side-validation-errors-when-a-cancel-button-is-clicked The problem is that, when triggered, client validation goes into an aggressive mode that performs validation on each key press and when an input loses focus. Is there a good way to reset this state as well?

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• Calling generic method in spring.net application context

  - by Bert Vandamme

  Hi, I'm trying to invoke this method in spring.net, but i'm having trouble getting the configuration right. Method: public void AddRepository(IRepository repository) where TEntity : IEntity { Repositories.Add(repository.GetType().Name, repository); } Config: <object type="Spring.Objects.Factory.Config.MethodInvokingFactoryObject, Spring.Core"> <property name="TargetObject"> <ref local="RepositoryFactory" /> </property> <property name="TargetMethod" value="AddRepository"/> <property name="Arguments"> <list> <ref object="BinaryAssetFileRepository"/> </list> </property> </object>" Is it possible to address generic methods in this way? Thx, Bert

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• MSVC 2008 - Unresolved External errors with LIB but only with DLL, not with EXE project

  - by Robert Oschler

  I have a DLL that I am trying to link with a libjpeg LIB using MSVC 2008 that is generating Unresolved External Symbol errors for the libjpeg functions. I also have a test project that links with the exact same libjpeg library file and links without error and runs fine too. I have triple-checked my LIB path and dependent LIBS list settings and literally copy and pasted them from the EXE project to the DLL project. I still get the errors. I do have the libjpeg include headers surrounded by extern "C" so it is not a name mangling issue and the unresolved external warnings show the "missing" libjpeg functions as undecorated (just a leading underscore and the @ sign parameter byte count suffix after each name). What could make the linker with the DLL project be unable to find the functions properly when the test EXE project has no trouble at all? I'm using the pre-compiled 32-bit static multi-threaded debug library which I downloaded from ClanLib. Thanks, Robert

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• Wordpress Not Publishing Posts To Custom Template

  - by thatryan

  I am building a theme that has a lot of custom templates, like every page. Ridiculous, but for some reason the template I made for the "postings" page is not getting the posts? I have set the post page in reading preferences, and I have set the page to use my template, but it still publishes posts to a default template. Of all the customization I built into this I did not expect the blog part to give me trouble! lol Anyone run into this kind of thing? Thank you.

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• Understanding a multilayer perceptron network

  - by Jonas Nielsen

  Hi all, I'm trying to understand how to train a multilayer, however, I'm having some trouble figuring out on choosing the amount of neurons in my network. For a specific task, I have four input sources that can each input one of three states. I guess that would mean four input neurons firing either 0, 1 or 2, but as far as I'm told, input should be kept binary? Furthermore am I having some issues choosing on the amount of neurons in the hidden layer. Any comments would be great. Thanks.

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• How can I install xpdf on a Godaddy Linux shared hosting server?

  - by Andrew

  I'm having trouble determining if it's possible, based on the amount of access I have to my Godaddy server, to install XPDF. Could someone shed some light on this? Here's the link to XPDF. And here is info about the GoDaddy server. My goal is to convert PDF's to Plain Text automatically using a PHP script on the server. So far, other solutions like code posted in the comments of the PHP website have been insufficient. All research seems to point to XPDF.

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• Databound Checkbox list with textboxes in a webform

  - by zSysop

  Hi all, I'm having trouble coming up with a solution for the following problem and i was wondering if someone here would help me out. I need to pull a list of supplies from a db table and list them along with two textboxes (one for quantity, and another for manufacturer) so the list would look something like this. checkbox for supply 1 | Quantity | Manufacturer checkbox for supply 2 | Quantity | Manufacturer .. I also need to store all of the checked items in a db table. I'm not sure how i should go about doing this. I've heard some talk about a repeater control being useful but i've not come across any examples that do this type of thing. Thanks in advance

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• Can I redistribute Phing with non-free software?

  - by Matt1776

  I am having trouble understanding the terms of the LGPL in light of a program that is not written in C or C++. They speak of libraries being linked and 'derivitive' works. If I were to package a php program and sell it, but within the program the deployment mechanism used the phing package (full up with the entire contents as is and un modified) - would I be violating the terms of the LGPL? For example, If this was a C program that was compiled by linking the phing 'library' then the answer would be easier, it is a derivitive work and therefore unless released under the GPL will not be considered free and also a violation. But this situation is different. I am not linking and not producing a derivitive, i am simply using phing as a deployment tool to move files around and set up the enviornment. Can someone shed some light? Thank you!

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• How to troubleshoot deallocation of object in uitableview?

  - by 4thSpace

  I have a table view with tall cells. About 300 in height. The cells are custom and have an associated nib. In cellForRowAtIndexPath, I access an object in an array using indexPath.row. The object has properties, which I assign to labels on the custom cell. This works fine for the first two cells. Once I scroll enough for the third cell to get created, the app crashes. I have NSZombieEnabled set and here is the output: 2010-04-19 21:48:13.360 MyApp[54463:207] *** -[CALayer release]: message sent to deallocated instance 0xfc4e50 (gdb) continue 2010-04-19 21:48:18.382 MyApp[54463:207] *** NSInvocation: warning: object 0xfc4e50 of class '_NSZombie_CALayer' does not implement methodSignatureForSelector: -- trouble ahead 2010-04-19 21:48:18.383 MyApp[54463:207] *** NSInvocation: warning: object 0xfc4e50 of class '_NSZombie_CALayer' does not implement doesNotRecognizeSelector: -- abort (gdb) continue Program received signal: “EXC_BAD_ACCESS”. (gdb) I'm not sure what is deallocated. How can I trace this to the source?

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• Fit Lightbox container in window if image is larger

  - by Bobe

  I'm just looking for a simple way to set the max width and height of the Lightbox container and image based on the window size if the image is larger than the current window size. So say the image is 2000x1200 and the window is 1280x1024, then the max-height and max-width of div.lb-outerContainer and img.lb-image should be set to $(window).height() - 286, $(window).width() - 60 and $(window).height() - 306, $(window).width() - 80 respectively. I'm just having a bit of trouble determining where to go about implementing these rules. Do I do it in the lightbox.js file? If so, where? Would it be acceptable to just throw in some script on the page it's used on?

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