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  • Binding Navigation Property with Entity Framework

    - by JSmaga
    Hi, I have another question about binding using C# and the entity framework. Here, I'm looking to bind a navigation property to a listbox or a listview. I saw on different posts that if I update the collection using code behind the list would not be notified because the collection does not handle notification (it's always the same problem anyway). People suggested to use an ObservableCollection for example, but, and here is my question, this comes down to basically duplicate the collection and hence, if I modify it, I'd have to handle in code-behind the fact that the change has also to be applied to the "original" navigation property right? If that's the case, I was thinking: why not create a custom property called, say, MyObservableNavigationProperty in a partial class. I could then interact only with this collection, catch the event when the collection is changed and apply the change to the "original" collection. Is that a nice way to do the trick? or am I getting all confused here....

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  • precise geolocalization via IP

    - by meo
    I tied the iPad the other day, and was amazed about the precision of the geolocalization by ip. Actually there is this action against hunger in the world that shows you very precisely where the persons are located that have took part to this petition: http://www.1billionhungry.org/meodai/impact/ I would like to integrate that in one of my projects. I took a look at the source but i could not figure out how they did it. Can someone help me out? is there a web service for that? Is the google map api doing this or are they using an other service? PS: Its not just the country/region of your IP/ISP IP that the service gives back, its a pretty precise positioning.

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  • How to access properties of Access Database Table using C# ADOX?

    - by Sachin G
    I have created MS Access Database using C# ADOX library. I have created one table with several columns. What I want to achieve is when I insert date in one column, the date format should be YYYY-MM-DD and not MM-DD-YYYY. I know its just display format, but I want to access the property which we set when we open access table in design mode, and for column with date data type, set format as Custom (YYYY-MM-DD). I want this to be set at runtime while creating table only. I wanted to know what should be property name that I should use in order to access and set the format property of column?

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  • Is is possible to make a shaped, alpha-blended dialog?

    - by jgaa
    I'm making a non-rectangular dialog, modelled over an image from Photoshop (the image is the background of the dialog, and the user will see trough the transparent part of the image). I'ts like a dashboard-style window for a media-app with a few custom-drawn controls. Most of the background-image is either opaque or 100% transparent - but in between there is a thin area of partially transparent pixels, ment to blend the image smootly into the background. This works great for web-graphics, but I have not found a way to make this work for Windows windows. I'm using the Windows Template Library (WTL), msvc 2008 - and the app must run on Windows XP as well as Vista and Windows 7. Currently, I'm simply using the opaque part of the background-image to create a GDI clipping-region, but this gives pretty rough edges. Does anyone know about any API functions to accomplish this (part of WTL, or reachable from WTL)?

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  • How to adjust a JScrollPane to its contained JTree

    - by spuas
    Hello, here I have a swing size question: I have a JTree which is contained inside a JScrollPane (which is contained in a custom component which extends JXPanel from swingx, but I think that has nothing to do with this question). Doesn't matter how many rows the tree has, the scrollpane is always bigger (the tree is dinamic but not designed to have many rows) but what I would like is the JScrollPane to adjust to the tree initial height and then show the vertical scroll when some of the nodes are expanded. I have tried without setting any size at all, setting tree preferred size to null and setting scrollpane preferred size to null as well but nothing changes. I DO NOT WANT to set the size manually... Is there a way to do this? Thanks

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  • How to export data which are mapped to enumerations

    - by Joshua
    I have a set of data which needs to be imported from a excel sheet, lets take the simplest example. Note: the data might eventually support uploading any locale. e.g. assuming one of the fields denoting a user is gender mapped to an enumeration and stored in the database as 0 for male and 1 for female. 0 and 1 being short values. If I have to import the values I cannot expect the user to punch in numbers (since they are not intuitive and is cumbersome when the enumerations are bigger), what would be the correct way to map to enumerations. Should we ask them to provide a string value in these cases (e.g. male or female) and provide the transformation to a enum in our code by wring a method public static Gender Gender.fromString(String value)

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  • Which C++ graph library should I use?

    - by mspoerr
    Hello, I found the following graph libraries, but I am not sure which one I should use. Maybe there are some more... Graphviz (http://www.graphviz.org/) Boost Graph Library (http://www.boost.org/doc/libs/1_42_0/libs/graph/doc/index.html) Lemon (http://lemon.cs.elte.hu/trac/lemon) igraph (http://igraph.sourceforge.net/introduction.html) What it should do: draw a undirected network map come as header only or static lib for Windows the output format should be user editable Graphviz is the only one I tried so far, but I found no static lib for it, I failed to build it by my own and the documentation could be better. Therefore I looked around and found these other three libs. I would be glad to get some recommendations which lib to choose. Thanks, /mspoerr

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  • Tracking DB changes with Zend Framework?

    - by Chad Johnson
    I am trying to decide between the Zend Framework and Ruby On Rails for my web application. If I go with ZF, I need the following: A way to incrementally track changes to my database, as with RoR's migration feature (001_something.sql, 002_something_else.sql). A place to put SQL for the next release of my software. At work in our custom PHP solution, we just have release.sql, which gets run, archived, and blanked out upon release. ZF has Zend_Db_Schema_Manager, which does the same thing, but I'm not interested as its not official, complete, or maintained. Is there an official mechanism that ZF provides for doing something similar to what I described? EDIT I ended up going with Rails. Nothing compares.

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  • Having issues with jquery ui datepicker and IE

    - by Howlingfish
    This works perfectly in Firefox but doesnt work in ie i get the following error "Line: 640 Error: Object doesn't support this property or method" Here is my code <asp:TextBox ID="calendardatedob" CssClass="calendardatedob" runat="server" AccessKey="n" TabIndex="4" MaxLength="40" /><span class="req">*</span> e.g dd/mm/yyyy Here is my jquery $(document).ready(function() { $("#ctl00_PageContent_calendardatedob").datepicker(); }); im referencing these > <script > src="../../assets/js/jquery.min.js" > type="text/javascript"></script> > <script > src="../../assets/js/jquery-ui-1.8.custom.min.js" > type="text/javascript"></script>

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  • yet another confusion with multiprocessing error, 'module' object has no attribute 'f'

    - by gatoatigrado
    I know this has been answered before, but it seems that executing the script directly "python filename.py" does not work. I have Python 2.6.2 on SuSE Linux. Code: #!/usr/bin/python # -*- coding: utf-8 -*- from multiprocessing import Pool p = Pool(1) def f(x): return x*x p.map(f, [1, 2, 3]) Command line: > python example.py Process PoolWorker-1: Traceback (most recent call last): File "/usr/lib/python2.6/multiprocessing/process.py", line 231, in _bootstrap self.run() File "/usr/lib/python2.6/multiprocessing/process.py", line 88, in run self._target(*self._args, **self._kwargs) File "/usr/lib/python2.6/multiprocessing/pool.py", line 57, in worker task = get() File "/usr/lib/python2.6/multiprocessing/queues.py", line 339, in get return recv() AttributeError: 'module' object has no attribute 'f'

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  • In CouchDB, how to get documents limited on value in related document? In terms of SQL, how to make WHERE on JOINed table

    - by amorfis
    Crossposting from [email protected] Assume we have two kind of documents in CouchDB. Person and Car: Person: _id firstname surname position salary Car: _id person_id reg_number brand So there is one to many relationship. One person can have many cars. I can construct map function to get every person and his/her car next to each other. In such case key is array [person.id, 0] and [car.person_id, 1]. What I can't do, is limiting this view to owners of specific brand only, e.g. if I need salaries of owners of Ferrari.

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  • Combining 2 PHP frameworks that both implement __() internationalization function

    - by mclin
    Never had a question I couldn't google until now, and it may be a doozy: I have a PHP site that combines Wordpress with Kohana - Wordpress for the blog, and Kohana for the custom functionality. This is done using a Wordpress plugin that stitches them together. This works great except they both define a __() internationalization function, with different arguments etc. so once wordpress has overridden kohana's __(), if kohana calls __() it explodes. I'm not that familiar with PHP so this might be naive, but shouldn't this stuff be namespaced? Is there anyway other than changing the source of one or the other framework to allow them to call their own respective __()?

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  • Using rendrer in list in flex

    - by Anshuman Jaiswal
    Hi all I am using list component in flex & using custom itemRenderer i.e I have made a component named frameRenrer(there are two controls ImageControl and label control) where I set the image source and label text on creationComplete event.And I providing the data using dataProvider function in List component.But actually problem is that when I scroll this list only 4 items are displayed repeatedly and to check it I make a function on mouseOver of image control in this I am using Alert.show(data.label); then it shows the correct data but it is not displayed in the list.In data provider I am using ArrayCollection. What is the problem anyone????

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  • How can I implement the same behavior as Dictionary.TryGetValue

    - by pblasucci
    So, given then following code type MyClass () = let items = Dictionary<string,int>() do items.Add ("one",1) items.Add ("two",2) items.Add ("three",3) member this.TryGetValue (key,value) = items.TrygetValue (key,value) let c = MyClass () let d = Dictionary<string,int> () d.Add ("one",1) d.Add ("two",2) d.Add ("three",3) And the following test code let r1,v1 = d.TryGetValue "one" let r2,v2 = c.TryGetValue "one" The r1,v1 line works fine. The r2,v2 line bombs; complaining c.TryGetValue must be given a tuple. Interestingly, in each line the signature of TryGetValue is different. How can I get my custom implementation to exhibit the same behavior as the BCL version? Or, asked another way, since F# has (implicitly) the concept of tuple parameters, curried parameters, and BCL parameters, and I know how to distinguish between curried and tuple-style, how can I force the third style (a la BCL methods)? Let me know if this is unclear.

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  • Optimizing Dijkstra for dense graph?

    - by Jason
    Is there another way to calculate the shortest path for a near complete graph other than Dijkstra? I have about 8,000 nodes and about 18 million edges. I've gone through the thread "a to b on map" and decided to use Dijkstra. I wrote my script in Perl using the Boost::Graph library. But the result isn't what I expected. It took about 10+ minutes to calculate one shortest path using the call $graph-dijkstra_shortest_path($start_node,$end_node); I understand there are a lot of edges and it may be the reason behind the slow running time. Am I dead in the water? Is there any other way to speed this up?

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  • Modifying the Google Drive menu interface

    - by Dangerbunny
    So I'm working on a web-app for the Google Marketplace that's going to involve integration with Google Drive. Part of what I want to be able to do with the app involves something along the lines of adding a menu option to the Drive menu interface. For instance, you could be editing a document in drive and browse to File-"My new fancy option." Does anyone know if this is possible? Or if it is not, is there another way of adding this sort of custom action functionality where you are able to perform non Drive standard actions on files from within the Drive interface?

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  • Datetime comparaison in CAML Query for Sharepoint

    - by Garcia Julien
    Hi, i'm trying to have some item from a sharepoint list, depends on date in a custom column. I've created my query with 2U2 Caml Builder, and that's worked but when I put it in my own code in my webpart, it always return to me all the items od the list. Here is my code: DateTime startDate = new DateTime(Int32.Parse(year), 1, 1); DateTime endDate = new DateTime(Int32.Parse(year), 12, 31); SPQuery q = new SPQuery(); q.Query = "<Query><Where><And><Geq><FieldRef Name='Publicate Date' /><Value IncludeTimeValue='FALSE' Type='DateTime'>" + SPUtility.CreateISO8601DateTimeFromSystemDateTime(startDate) + "</Value></Geq><Leq><FieldRef Name='Publicate_x0020_Date' /><Value IncludeTimeValue='FALSE' Type='DateTime'>" + SPUtility.CreateISO8601DateTimeFromSystemDateTime(endDate) + "</Value></Leq></And></Where></Query>"; SPListItemCollection allItem = library.GetItems(q);

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  • How to prevent the beep sound caused by alt key pressed in a WinForms TextBox?

    - by Michael Johnson
    I'm creating a routine that allows the user to replicate keyboard shortcuts into a textbox for 'custom keyboard shortcuts' customization, but every time the alt key is pressed with another letter, it produces another sound. I'm capturing the keys in the textbox_keydown event to parse the modifiers + other keys into a readable Shift + A or Ctrl + Shift + B manner into that very same textbox. Should I be doing this in a different event like textbox_previewkey instead of textbox_keydown? How can I prevent the alt modifier key + a letter or number causing the Beep sound? the textbox is just a normal .net 3.5 textbox with the only edited properties of it being the ReadOnly property to false. Is there a better way I could re-do this? I'm currently just checking that if any modifiers keys are pressed and then + a-z or 0-9, then to go ahead and input the appropriately pressed keys into that same textbox like Shift + A or Ctrl + Shift + Y.

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  • What is Ruby's double-colon (::) all about?

    - by Meltemi
    I'd probably be able to answer this for myself if "::" wasn't so hard to Google. Didn't see anything on SO so thought I'd try my luck. What is this double-colon :: all about? I see it everywhere in Rails: class User < ActiveRecord::Base or… ActionController::Routing::Routes.draw do |map| I found a definition from this guy: The :: is a unary operator that allows: constants, instance methods and class methods defined within a class or module, to be accessed from anywhere outside the class or module. but that just leads to more questions. What good is scope (private, protected) if you can just use :: to expose anything?

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  • How do I make the Drupal-Core Forum display only to members, and ask for login details otherwise

    - by Busk
    I'm trying to create a website, that has a menu based on Primary Links on the top of the site. The one menu item is for a 'Members Forum'. I want this menu item visible to all users (Anonymous/Authorized), but if an Anonymous user clicks on the item, instead of displaying "Access Denied", I'd prefer to show a custom message "such as please login to access the forum". If an Authorized user clicks it, obviously I want them to go straight to the page. In the Forum module, I've set up a container for the forum that is only viewable for Authorized users, so that when an Anonymous user clicks the menu item, they get the Access Denied error. Thank you

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  • Java reflection for generics

    - by Vijay Bhore
    I am using Java Reflection to expose methods in custom eclipse tool. I am writing method getReturnType which accepts java.lang.reflect.Method as input and returns object of Class private static Class<?> getReturnType(Method method) { Type type = ((ParameterizedType)method.getGenericReturnType()).getRawType(); return getClass(type); } This code compiles well but at runtime i get the below exception while casting Type to ParameterizedType. java.lang.ClassCastException: java.lang.Class cannot be cast to java.lang.reflect.ParameterizedType Please suggest. Thanks!

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  • Multiple indexes for a Java Collection - most basic solution?

    - by chris_l
    Hi, I'm looking for the most basic solution to create multiple indexes on a Java Collection. Required functionality: When a Value is removed, all index entries associated with that value must be removed. Index lookup must be faster than linear search (at least as fast as a TreeMap). Side conditions: It should ideally work with JavaSE (6.0) alone - no extra libraries, if possible. If necessary, then only small (not something like Lucene), common and well tested libraries. No database! Of course, I could write a class that manages multiple Maps myself. But I'd like to know, if it can be done without - while still getting a simple usage similar to using a single indexed java.util.Map. Thanks, Chris

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  • Dynamic Operator Overloading on dict classes in Python

    - by Ishpeck
    I have a class that dynamically overloads basic arithmetic operators like so... import operator class IshyNum: def __init__(self, n): self.num=n self.buildArith() def arithmetic(self, other, o): return o(self.num, other) def buildArith(self): map(lambda o: setattr(self, "__%s__"%o,lambda f: self.arithmetic(f, getattr(operator, o))), ["add", "sub", "mul", "div"]) if __name__=="__main__": number=IshyNum(5) print number+5 print number/2 print number*3 print number-3 But if I change the class to inherit from the dictionary (class IshyNum(dict):) it doesn't work. I need to explicitly def __add__(self, other) or whatever in order for this to work. Why?

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  • Kohana v2 - problem with routes

    - by yoda
    Hi, I'm attempting to set some custom routes in Kohana v2. What I'm looking for is some method that allow the system to : follow a pre-defined name to it's related root; redirect the non-matched url's into another controller; To give you a more clear view over the problem, I want the first url parameter to be associated to certain pages (contacts, home, services, about us, etc), and those urls who doesn't match the previous pages would be routed into a controller called products, in order to determine if the first url parameter regards a product name. Here's a sample of what I have : $config['_default'] = 'home'; $config['([a-zA-Z]+)'] = 'products/showcat/$1'; What am I missing here? Thanks in advance!

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  • displaying the infoWindow in Google maps at the same time as the marker

    - by Decbrad
    Hi all, I have developed a Google Map page which displays a marker where i tell it to. If you click the market the infoWindow pops up. However, I was wondering if anybody knows how to open the infowindow and display the marker at the same time? (as in onload) here's the page... http://www.sportingemporium.com/map_test3.htm This seems like a straight forward exercise but I have searched for hours without finding a solution! Any assistance would be great! thanks in advance Decbrad

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