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  • Static Evaluation Function for Checkers

    - by Kamikaze
    Hi all! I'm trying to write an evaluation function for a game of checkers that I'm developing but I can't find the right documentation. I've read several documents on the web witch describe different techniques for either writing one or letting the computer find it(using genetic algorithms or Bayesian learning) but they're too complicated for a novice like me. All documents pointed a reference to "Some studies in machine learning using the game of checkers" by A.L.Samuel but I couldn't get my hands on it yet :(. I've only read the follow up "Some studies in machine learning using the game of checkers -II" and found some good info there, but it doesn't explain what the eval parameters mean (I think I don't have the whole article). Thanks for your help!

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  • Creating C++ objects

    - by Phenom
    I noticed that there are two ways to create C++ objects: BTree *btree = new BTree; and BTree btree; From what I can tell, the only difference is in how class objects are accessed (. vs. - operator), and when the first way is used, private integers get initialized to 0. Which way is better, and what's the difference? How do you know when to use one or the other?

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  • WPF bind to a static double var

    - by devin250
    hi, i have these double values: public partial class Window1 : Window { public Window1() { InitializeComponent(); double num1 = 50.0; double num2 = 90.0; double num3 = 120.0; double num4 = 20.0; double num5 = 80.0; } } how do i bind them to xaml? <vc:Chart.Series> <vc:DataSeries RenderAs="Column" AxisYType="Primary" > <vc:DataSeries.DataPoints> <vc:DataPoint AxisXLabel="Wall-Mart" YValue="{Binding Source={StaticResource num1}}" /> .... help please

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  • inner class within Interface

    - by harigm
    is that possible to create a inner class within an interface? If yes, why do we create like that? Anyways we are not going to create any interface objects? Do they help in any Development process?

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  • Qt QFileDialog - native dialogs only with static functions?

    - by darron
    I'm trying to simply save a file. However, I need a filename entered without a suffix to automatically get a default suffix (which setDefaultSuffix() does). I'd rather not completely lose the native save dialog just for this. exec() is not overloaded from QDialog, so it totally bypasses the native hook (ignoring the DontUseNativeDialog option even if it's false). If I disable the file overwrite warning and append the default suffix myself after the function returns, then I'd be re-opening the dialog if the user did not want to overwrite... and that's just ugly. Is there some signal I can catch and quickly inject the default suffix if it's not there? I'm guessing not, since it's a native dialog. Is there something I'm doing wrong with the filter? I only have one filter choice. It should use that extension. This seems pretty lame. Launching the save dialog and simply typing "test" should never result in an extensionless file. "test.", yes. "test" no way. That'll really confuse the users when they hit Load and can't see the file they just saved. I guess the cross-platform part of Qt is giving me lowest common denominator file dialog functionality?

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  • Clear all class variables between instances

    - by ensnare
    This is probably a stupid question, but what's the best way to clear class variables between instances? I know I could reset each variable individually in the constructor; but is there a way to do this in bulk? Or am I doing something totally wrong that requires a different approach? Thanks for helping ... class User(): def __init__(self): #RESET ALL CLASS VARIABLES def commit(self): #Commit variables to database >>u = User() >>u.name = 'Jason' >>u.email = '[email protected]' >>u.commit() So that each time User is called the variables are fresh. Thanks.

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  • VB.NET - Send [Delegate] through the classes to set AddressOf

    - by sv88erik
    How can I put AddressOf, from another class? I get this error 'AddressOf' operand must be the name of a method (without parentheses). " Is there an Eval () function in VB.NET? Or how does one do this? Public Shared Property e As UserControl Public Shared Sub SetButton(ByVal button As String, ByVal Objekt As [Delegate]) Dim errorbuttom1 As Button = e.FindName("errorButton1") AddHandler errorbuttom1.Click, AddressOf Objekt End Sub

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  • Linking against multiple shared libraries that all linked against a common static library

    - by live2dream95
    Say you have 2 share libraries, lib1.so and lib2.so, that both have libcommon.a statically linked into them. Would the compiler complain about ambiguous symbol reference if you were to dynamically link both lib1.so and lib2.so? Or would be the compiler be smart enough to know libcommon symbols are shared between lib1 and lib2 and allow you to dynamically link against both?

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  • LinqDataSource wizard table list is not refreshing after updating LinqToSql classes

    - by dotnet_learner
    I have changed my dbml file like this. I have deleted all the tables and stored procs. I added new tables and stored procs from a new database. In the code-behind, I can access the new tables and stored procs. However, in the LinqDataSource using the same dbContext when I'm trying to configure the LinqDataSource. I can see all the old tables in the wizard drop-down. How to refresh the the wizard drop-down so that I can select the newly added tables? Deleting the old LinqDataSourceand adding a new one is not working.

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  • How to access "overridden" inner class in Scala?

    - by doom2.wad
    I have two traits, one extending the other, each with an inner class, one extending the other, with the same names: trait A { class X { def x() = doSomething() } } trait B extends A { class X extends super.X { override def x() = doSomethingElse() } } class C extends B { val x = new X() // here B.X is instantiated val y = new A.X() // does not compile val z = new A.this.X() // does not compile } How do I access A.X class in the C class's body? Renaming B.X not to hide A.X is not a preferred way. To make things a bit complicated, in the situation I have encountered this problem the traits have type parameters (not shown in this example).

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  • Eclipse says I don't implement Enumeration, but I do

    - by Harm De Weirdt
    Goodmorning everybody, I'm having a little problem with a project for school. We are told to make an Iterator that implements Enumeration over a Hashmap. So i made this Enumeration: public Enumeration<Object> getEnumeration() { return new Enumeration<Object>() { private int itemsDone = 0; Collection<Long> keysCollection = getContent().keySet(); Long [] keys = keysCollection.toArray(new Long[keysCollection.size()]); @Override public boolean hasMoreElements() { if(itemsDone < getContent().size() +1 ) { return true; }else { return false; } } @Override public Object nextElement() { return getContent().get(keys[itemsDone++]); } }; } This goes in my Backpack class public class Backpack extends Item implements Carrier, Enumeration<Object>{ The hashmap is returned by getContent(). The problem now is that eclipse keeps telling me I havent implemented the methods from Enumeration. If I use the quick fix it just adds the hasMoreElements() and nextElement() dummy methods in my class. Somehow it doesn't see these methods in the inner class.. Can anyone help me please? Any help is appreciated.

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  • google static maps via TIdHTTP

    - by cloudstrif3
    Hi all. I'm trying to return content from maps.google.com from within Delphi 2006 using the TIdHTTP component. My code is as follows procedure TForm1.GetGoogleMap(); var t_GetRequest: String; t_Source: TStringList; t_Stream: TMemoryStream; begin t_Source := TStringList.Create; try t_Stream := TMemoryStream.Create; try t_GetRequest := 'http://maps.google.com/maps/api/staticmap?' + 'center=Brooklyn+Bridge,New+York,NY' + '&zoom=14' + '&size=512x512' + '&maptype=roadmap' + '&markers=color:blue|label:S|40.702147,-74.015794' + '&markers=color:green|label:G|40.711614,-74.012318' + '&markers=color:red|color:red|label:C|40.718217,-73.998284' + '&sensor=false'; IdHTTP1.Post(t_GetRequest, t_Source, t_Stream); t_Stream.SaveToFile('google.html'); finally t_Stream.Free; end; finally t_Source.Free; end; end; However I keep getting the response HTTP/1.0 403 Forbidden. I assume this means that I don't have permission to make this request but if I copy the url into my web browser IE 8, it works fine. Is there some header information that I need or something else? thanks you advance.

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  • Eclipse (Springsource Tool Suite 2.3.1) can't resolve dependencies for classes in the same package

    - by Steve
    This started happening when I upgraded my Springsource Toolsuite from 2.3 to 2.3.1. Essentially whenever I do anything, such as open a file, change a file, etc, I have to do a clean. Everything works fine when I do mvn commands on the command line, which leads me to believe that Eclipse is looking in the wrong place for compiled code or something along those lines, although that is entirely superstitious at this point. Example: I make a change to com.foo.mypackage.MyClass. Suddenly a bunch of tests that excercise MyClass get the red x - for class not found! In src/main/test: com.foo.DbUnitTest com.foo.mypackage.FooTest extends DbUnitTest DbUnitTest gets a class not found. I do a clean, and everything is fine. I touch something, and it breaks again :(. I don't really know where to begin on how to troubleshoot this.

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  • jPlayer widget created with static error as result

    - by goldengel
    I've created a widged with Orchard. Unfortunately I've used the same "Title" for a jPlayer widget twice. Now I receive an error: Server Error in '/wgk' Application. Sequence contains more than one element Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.InvalidOperationException: Sequence contains more than one element Source Error: Line 2: <fieldset> Line 3: <div>@Html.LabelFor(o => o.MediaGalleryName, @T("Media gallery"))</div> Line 4: @if(!Model.HasAvailableGalleries) { Line 5: <div>@T("You need first to create an media gallery on Media Gallery menu")</div> Line 6: } Source File: x:\Intepub\wgk\Modules\Orchard.jPlayer\Views\EditorTemplates\Parts\MediaGallery.cshtml Line: 4 Stack Trace: [InvalidOperationException: Sequence contains more than one element] System.Linq.Enumerable.SingleOrDefault(IEnumerable`1 source) +4206966 NHibernate.Linq.Visitors.ImmediateResultsVisitor`1.HandleSingleOrDefaultCall(MethodCallExpression call) +51 NHibernate.Linq.Visitors.ImmediateResultsVisitor`1.VisitMethodCall(MethodCallExpression call) +411 NHibernate.Linq.Visitors.ExpressionVisitor.Visit(Expression exp) +371 In MediaGallery.cshtml (found in error description above) is written: @model Orchard.jPlayer.Models.MediaGalleryPart <fieldset> <div>@Html.LabelFor(o => o.MediaGalleryName, @T("Media gallery"))</div> @if(!Model.HasAvailableGalleries) { <div>@T("You need first to create an media gallery on Media Gallery menu")</div> } else { <div>@Html.DropDownListFor(o => o.SelectedGallery, Model.AvailableGalleries)</div> <div>@Html.LabelFor(o => o.SelectedType, @T("Media gallery type"))</div> <div>@Html.DropDownListFor(o => o.SelectedType, Model.AvailableTypes)</div> <div>@Html.LabelFor(o => o.AutoPlay, @T("Auto play"))</div> <div>@Html.CheckBoxFor(o => o.AutoPlay)</div> } </fieldset> My problem is now, I cannot find or edit the widget with double used name. I would love to replace it to another name. But I do not know where to do this. Please advice.

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  • [Haskell] Problem when mixing type classes and type families

    - by Giuseppe Maggiore
    Hi! This code compiles fine: {-# LANGUAGE MultiParamTypeClasses, FunctionalDependencies, FlexibleInstances, UndecidableInstances, FlexibleContexts, EmptyDataDecls, ScopedTypeVariables, TypeOperators, TypeSynonymInstances, TypeFamilies #-} class Sel a s b where type Res a s b :: * instance Sel a s b where type Res a s b = (s -> (b,s)) instance Sel a s (b->(c,a)) where type Res a s (b->(c,a)) = (b -> s -> (c,s)) but as soon as I add the R predicate ghc fails: {-# LANGUAGE MultiParamTypeClasses, FunctionalDependencies, FlexibleInstances, UndecidableInstances, FlexibleContexts, EmptyDataDecls, ScopedTypeVariables, TypeOperators, TypeSynonymInstances, TypeFamilies #-} class Sel a s b where type Res a s b :: * instance Sel a s b where type Res a s b = (s -> (b,s)) class R a where type Rec a :: * cons :: a -> Rec a elim :: Rec a -> a instance Sel a s (b->(c,Rec a)) where type Res a s (b->(c,Rec a)) = (b -> s -> (c,s)) complaining that: Illegal type synonym family application in instance: b -> (c, Rec a) In the instance declaration for `Sel a s (b -> (c, Rec a))' what does it mean and (most importantly) how do I fix it? Thanks

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  • .net generate proxy classes problem (wsdl/svchost) by soapHeader

    - by Oguzhan
    I'm using a web service from .Net C# client application. My web service has a method which return generic list and in my client application I use Configuration Service Reference to change array to generic list.Its working correctly. But when I add a soapHeader to my web service Configuration Service Reference to change array to generic list its not working and return Array instead of generic list. public class Service1 : System.Web.Services.WebService { public Authentication authentication = new Authentication(); [SoapHeader("authentication")] [WebMethod] public List<string> HelloWorld() { List<string> result = new List<string>(); result.Add("oguzhan"); return result; } } public class Authentication : SoapHeader { public string username; public string password; }

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  • IE7 Animated GIF Appears as a Static Image?

    - by Abs
    Hello all, After a button is clicked to start a process on my web app, I show a small loading gif (animated) that rotates to indicate to the user something is happening. I put the gif img in place of the button like this using JQuery: $('#btn_holder').html('<img src="images/loading2.gif" style="margin-left:40px; margin-top:7px;" />'); This works great in all browsers (Firefox, IE8, Chrome) except IE7 on a windows server 2003. In IE, the gif appears but it is not animated. What's going on with IE7? How can I test what the problem is? Thanks all

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  • A quick design question about C++ container classes in shared memory

    - by recipriversexclusion
    I am writing a simple wrapper around boost::interprocess's vector container to implement a ring buffer in shared memory (shm) for IPC. Assume that buf is an instance of RingBuffer created in shm. Now, in its ctor, buf itself allocates a private boost::interprocess::vector data member to store values, e.g. m_data. My question is: I think m_data should also be created in shared memory. But it this a necessity? What happens if buf that was created in shm itself, allocates standard memory, i.e. using new. Does this get allocated on the calling process's heap? I don't think buf is allocated there so how come a data member that is private to an object not on a process's heap gets allocated there. I'm confused.

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  • How do I enumerate a list of interfaces that are directly defined on an inheriting class/interface?

    - by Jordan
    Given the following C# class: public class Foo : IEnumerable<int> { // implementation of Foo and all its inherited interfaces } I want a method like the following that doesn't fail on the assertions: public void SomeMethod() { // This doesn't work Type[] interfaces = typeof(Foo).GetInterfaces(); Debug.Assert(interfaces != null); Debug.Assert(interfaces.Length == 1); Debug.Assert(interfaces[0] == typeof(IEnumerable<int>)); } Can someone help by fixing this method so the assertions don't fail? Calling typeof(Foo).GetInterfaces() doesn't work because it returns the entire interface hierarchy (i.e. interfaces variable contains IEnumerable<int> and IEnumerable), not just the top level.

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  • .htaccess query string with static page

    - by Wes
    So, unfortunately im using vBulletin with Kohana and my integration is getting a bit complicated locking vBulletin out. Doing some rewrites, this in particular RewriteCond %{QUERY_STRING} ^do=(editprofile|editoptions)$ RewriteRule ^forum/profile.php$ /user_profile/edit/ [R=301,L] Comes back with /user_profile/edit/?do=editprofile where I need /user_profile/edit/ Cheers, Wes

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