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  • C# Custom Dictionary Take - Convert Back From IEnumerable

    - by Goober
    Scenario Having already read a post on this on the same site, which didn't work, I'm feeling a bit stumped but I'm sure I've done this before. I have a Dictionary. I want to take the first 200 values from the Dictionary. CODE Dictionary<int,SomeObject> oldDict = new Dictionary<int,SomeObject>(); //oldDict gets populated somewhere else. Dictionary<int,SomeObject> newDict = new Dictionary<int,SomeObject>(); newDict = oldDict.Take(200).ToDictionary(); OBVIOUSLY, the take returns an IENumerable, so you have to run ToDictionary() to convert it back to a dictionary of the same type. HOWEVER, it just doesn't work, it wants some random key selector thing - or something? I have even tried just casting it but to no avail. Any ideas?

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  • Entity Framework Custom Query Function

    - by Josh
    I have an Entity Framework 4.0 Entity Object called Revision w/ Nullable DateEffectiveFrom and DateEffectiveTo dates. I was wondering if there was a short-hand way of querying an object's RevisionHistory based on a particular QueryDate date instead of having to use the following query structure: var results = EntityObject.Revisions.Where(x => (x.DateEffectiveFrom == null && x.DateEffectiveTo == null) || (x.DateEffectiveFrom == null && x.DateEffectiveTo >= QueryDate) || (x.DateEffectiveFrom <= QueryDate && x.DateEffectiveTo == null) || (x.DateEffectiveFrom <= QueryDate && x.DateEffectiveTo >= QueryDate)); I've tried creating the following boolean function in the Revision class: partial class Revision { public bool IsEffectiveOn(DateTime date) { return (x.DateEffectiveFrom == null && x.DateEffectiveTo == null) || (x.DateEffectiveFrom == null && x.DateEffectiveTo >= date) || (x.DateEffectiveFrom <= date && x.DateEffectiveTo == null) || (x.DateEffectiveFrom <= date && x.DateEffectiveTo >= date)); } ... } And then updating the query to: var results = EntityObject.Revisions.Where(x => x.IsEffectiveOn(QueryDate)); but this obviously doesn't translate to SQL. Any ideas would be much appreciated.

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  • Custom Collection Initializers

    - by Jake
    Classes that implement IEnumerable and provide a public void Add(/* args */) function can be initialized like in the following example: List<int> numbers = new List<int>{ 1, 2, 3 }; which calls the Add(int) function 3x after initializing the List<int>. Is there a way to define this behavior explicitly for my own classes? For example, could I have the initializer call a function other than the appropriate Add() overload?

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  • Using TTMessageController with Multiple Data Sources

    - by PF1
    Hi Everyone: I am wondering if there is some way to set a separate .datasource for each custom field in a TTMessageController. Right now I am using a TTMessageController subclass (and referencing the data source controller delegate) and simply setting the data source of the message controller to self. But I only believe this will work for one field with one set of options. Thanks for any help!

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  • Save data typed into PDF Form [closed]

    - by mnh
    Hey I have PDF Form which would not let me save the data typed into it. Here is the form: http://www.cic.gc.ca/english/pdf/kits/forms/imm0008egen.pdf I want it to save the data typed into it so that I can email it to my relative. Any ideas? I'm using Acrobat Reader.

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  • Custom DataType in DataTemplate breaks WPF designer

    - by PRINCESS FLUFF
    Why does the DataTemplate line break the WPF designer in Visual Studio 2008? The program compiles and runs properly. The DataTemplate is applied as it should. However the entire DataTemplate block of code is underlined in red, and when I simply "build" the program without running, I get the error "Type reference cannot find public type named 'Character'" How come it can't find it in the designer yet the program applies the template properly? <UserControl x:Class="WPF_Tests.Tests.TwoCollecViews.TwoViews" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:DetailsPane="clr-namespace:WPF_Tests.Tests.DetailsPane" > <UserControl.Resources> <DataTemplate DataType="{x:Type DetailsPane:Character}"> <StackPanel Orientation="Horizontal"> <TextBlock Text="{Binding Path=Name}"></TextBlock> </StackPanel> </DataTemplate> </UserControl.Resources> <Grid> <ListBox ItemsSource="{Binding Path=Characters}" /> </Grid> </UserControl> EDIT: I am being told that this may be a bug in Visual Studio 2008, as it worked correctly in 2010. You can download the code here: http://www.mediafire.com/?z1myytvwm4n - The Test/TwoCollec xaml file's designer will break with this code.

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  • Rails Custom Plugin/Gem with Partials

    - by Jason
    I am writing a gem which provides helpers for views. The HTML I want to insert via the helper is complex enough that I'd rather write it in a _partial.html.erb file. How do I get the gem's view path include in the application's load_path? Note: the only gem I've found that does something like this is Devise. When a view cannot be found, Rails prints the load path which (on my machine) looks like: Missing partial sortable_nested_set/tree with {:handlers=>[:erb, :rjs, :builder, :rhtml, :rxml], :formats=>[:html], :locale=>[:en, :en]} in view paths "/home/jason/VirtualRestaurant3/app/views", "/home/jason/.rvm/gems/ruby-1.9.2-preview3/gems/devise-1.1.rc0/app/views" How does Devise do it? My gem: http://github.com/jrmurad/SortableNestedSet Devise gem: +http://+github.com/plataformatec/devise

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  • How to properly deal with KVO notifications when an managed object turns into a fault?

    - by dontWatchMyProfile
    From the docs: When Core Data turns an object into a fault, key-value observing (KVO) change notifications (see Key-Value Observing Programming Guide) are sent for the object’s properties. If you are observing properties of an object that is turned into a fault and the fault is subsequently realized, you receive change notifications for properties whose values have not in fact changed. So if an object turns into a fault, Core Data does send KVO notifications for changed properties? So I must always check for isFault == NO before beeing happy about the notification?

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  • Django Custom Template Tages: Inclusion Tags

    - by Harry
    Hello world! Im trieng to build my own template tags Im have no idea why I get the errors I get, im following the django doc's. this is my file structure of my app: pollquiz/ __init__.py show_pollquiz.html showpollquiz.py This is showpollquiz.py: from django import template from pollquiz.models import PollQuiz, Choice register = template.Library() @register.inclusion_tag('show_pollquiz.html') def show_poll(): poll = Choice.objects.all() return { 'poll' : poll } html file: <ul> {% for poll in poll <li>{{ poll.pollquiz }}</li> {% endfor </ul> in my base.html file im am including like this {% load showpollquiz %} and {% poll_quiz %} Bu then I get the the error: Exception Value: Caught an exception while rendering: show_pollquiz.html I have no idea why this happens. Any ideas? Please keep in mind Im still new to Django

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  • android custom map marker bounds

    - by max4ever
    Hello i am using a resized version of this marker( http://www.clker.com/clipart-orange-pin-4.html ) for showing markers in google maps on android. The problem is i don't know how to make the marker point match the coordinates. The arrow point is at about 1/5 of the Width coordinates and MAX of the Height. here is my class public class GestionaleItemizedOverlay extends com.google.android.maps.ItemizedOverlay { public GestionaleItemizedOverlay(Drawable defaultMarker, Context context) { //super(boundCenterBottom(defaultMarker)); super(boundCenter(defaultMarker)); this.mContext = context; } ... And this this.marker_poi = this.getContext().getResources().getDrawable(R.drawable.marker); this.marker_poi.setBounds(this.marker_poi.getIntrinsicWidth() / 2, this.marker_poi.getIntrinsicHeight(), this.marker_poi.getIntrinsicWidth() / 2, 0); new GestionaleItemizedOverlay(this.poi, this.context); Do i need to setBounds on the marker before passing it to the constructor? and why does super(defaultMarker) makes all the markers not to show ?

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  • Move jQuery data() when an element is destroyed and re-created

    - by Ed Woodcock
    Can anyone think of a (preferably quick) way to move the data() attached to a DOM element to a new instance of itself? The lightbox plugin I'm using deletes and re-appends and element to the page in order to display it in the lightbox (to aviod the multiple-ids issue that ASP.net has), and obviously the .data() that is attached to the element is lost when this happens.

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  • C# Using Enumerable Range and Except with custom class to determine missing sequence number

    - by Jon
    I have a List<MyClass> The class is like this: private class MyClass { public string Name{ get; set; } public int SequenceNumber { get; set; } } I want to work out what Sequence numbers might be missing. I can see how to do this here however because this is a class I am unsure what to do? I think I can handle the except method ok with my own IComparer but the Range method I can't figure out because it only excepts int so this doesn't compile: Enumerable.Range(0, 1000000).Except(chqList, MyEqualityComparer<MyClass>); Here is the IComparer: public class MyEqualityComparer<T> : IEqualityComparer<T> where T : MyClass { #region IEqualityComparer<T> Members public bool Equals(T x, T y) { return (x == null && y == null) || (x != null && y != null && x.SequenceNumber.Equals(y.SequenceNumber)); } /// </exception> public int GetHashCode(T obj) { if (obj == null) { throw new ArgumentNullException("obj"); } return obj.GetHashCode(); } #endregion }

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  • Notepad++ Associate custom ext for use by ctags

    - by user185420
    Hi, I use .pkb and pkh extensions for PL/SQL files (rather than .sql). I have already associated .pkb and .pkh extension in the langs.xml (Styler Config) so that Notepad++ recognizes the syntax highlight to use when I open pkb and pkh files (the syntax highlighting would be the same as for sql ext). Now the problem is that I cannot use plugins that parse code using ctags (like SourceCookifier, OpenCtag,GtagSearch) because these plugins do not recognize the pkb and pkh extension. THe only way I could use them is to change my file to sql and when done change to the pkh or pkb ext. Is there any config that could make ctags based plugin work with non-sql ext? I tried changing various config for the plugins but did not succeed in making them work. Thanks.

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  • custom MSSQL driver

    - by hoodoos
    I had a crazy thought about writing my own MSSQL driver to make it work something like non-blocking http client, so it won't be thread thirsty and could handle lots of db queries within one thread. I tried to look over google for some guidelines about implementing MSSQL client protocol, but found none really, where do those guys get information about it when they write own implementations for PHP or python? I need a really low level to be documented so I can implement all phases of working with a connection through sockets. And would be really nice to have a an example in c# langauge. :)

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  • Search results in wordpress, order by custom category order and time DESC

    - by Adiasz
    Hello I want to change default post search order to order: sample cat 1 sample post from cat 1 sample post from cat 1 sample cat 2 sample post from cat 2 sample post from cat 3 sample cat 3 etc.. So... I want to define category order and in search results will be sorted for this order and in category order will be date DESC. Only posts (no categories) will be visible. Anybody have any idea?

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  • custom php library with pear local installation

    - by andreas
    Hello i wish to be able to deploy a PHP web application along with a local installation of PEAR. To be more specific, i am trying to find a way to do a 'per-application' or local installation of PEAR if this is possible. For example: The application 'MyApplication' is located in: /var/www/applications/myapplication The php library is located in: /var/www/applications/myapplication/library I am looking for a way to do a per-application installation of PEAR since not all applications are managed by me (and i want to control which PEAR packages are installed and when). I found some tutorials for a local PEAR installation (on a shared host) but i don't know if my scenario fits the one for a local PEAR installation. Any thoughts/help appreciated.

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  • datagrid doesn't refresh on changed data

    - by Jakob
    Hi. I have 2 datagrids with data that binds at loadtime in xaml. Then I have a button that inserts a row in the database, but rows aren't added to the datagrids when I press the button. I would like a fix that doesn't just add a gridrow, but actually refreshes the data and fetches the new row from the db. I'm using riaservices, so if that opens up to any tools that can help me, please let me know? thx in advance :D

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  • Why can't I Bind a viewmodel property to a dependency property of a custom control

    - by Robert
    I want to use a color picker in my wpf application and I saw a nice looking one on this codeproject page. The control works fine until I want to connect the control to a viewmodel. I created a small test program with this viewmodel: public class ColorViewModel : ViewModelBase { public ColorViewModel() { LineColor = Brushes.Yellow; } SolidColorBrush _brushColor; public SolidColorBrush LineColor { get { return _brushColor; } set { _brushColor = value; RaisePropertyChanged(() => LineColor); } } } The test program has a textbox and the colorpicker controls: <StackPanel Orientation="Horizontal"> <TextBlock Text="Please Select a Color" FontWeight="Bold" Margin="10" Foreground="{Binding Path=LineColor, UpdateSourceTrigger=PropertyChanged}"/> <vw:ColorPickerControlView x:Name="ForeColorPicker" Margin="10" CurrentColor="{Binding Path=LineColor, UpdateSourceTrigger=PropertyChanged }"/> </StackPanel> In the loaded event of the window I set the viewmodel to the datacontext like this: DataContext = new ColorViewModel(); The problem is that I can't seem to bind the LineColor property of the viewmodel to the CurrentColor property of the ColorPickerControlView. The CurrentControl property of the ColorPickerControlView seems to be fine. The constructor looks like this: public ColorPickerControlView() { this.DataContext = this; InitializeComponent(); CommandBindings.Add(new CommandBinding(SelectColorCommand, SelectColorCommandExecute)); } In the constructor of the UserControl there is the line this.DataContext = this; I read that is is necessary to bind the dependency properties. Do I override this line when I set my viewmodel to the datacontext and is that why I can't bind to the CurrentColor property? Is there any workaround? Or did I make another mistake?

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  • Custom iterator for a class based on two sets

    - by Dan Hook
    I have a class that contains two sets. They both contain the same key type but have different compare operations. I would like to provide an iterator for the class that iterates through the elements of both sets. I want to start with one set, then when I increment an iterator pointing to the last element of the first set, I want to go to the first element of the second set. How do I do this? I would like to preserve the bidirectional iterator semantics of std::set, but if it turns out that implementing a forward iterator is much easier, so be it. I'm willing to use the Boost Iterator library if that would help.

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