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• SQLAlchemy Relationship Filter?

  - by Timmy

  can i do: table.relationship.filter( column = value ) to get a subset of rows for relationships? and the same for order_by?

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• How do I make menus like these?

  - by Doug

  So I'm looking at slickdeals.net and amazon.com, and I found something very intriguing. It's basic for most of you guys out there, but it's new to me. For slickdeals.net, when you click login, a login box pops up like so. Also for Amazon.com, when you hover over the left navigational menus, a new menu pops up! I think it's JavaScript, but how does this work? How can I do something like that?

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• Is there a way to set a handler function for when a set of events has happened in JavaScript?

  - by allyourcode

  eg I have two concurrent AJAX requests, and I need the result from both to compute a third result. I'm using the Prototype library, so it might look something like this: var r1 = new Ajax.Request(url1, ...); var r2 = new Ajax.Request(url2, ...); function on_both_requests_complete(resp1, resp2) { ... } One way would be to use polling, but I'm thinking there must be a better way.

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• Advanced Model Binding vs 2010

  - by user281180

  Can I have an example of advanced model binding using ajaxpost? I have two classes Person and Test as follows: public class person{ public ArrayList Name = new ArrayList(); public Test []test {get;set;} } public class Test { public int ID{get;set;} public int mark{get;set;} } My Controller could be [HttpPost] public EmptyResult CaseTest(Person person) { return new EmptyResult(); } How do I post the values from the view?

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• How do I "DoEvents" in WPF?

  - by SLC

  I've read that the C# version is as follows: Application.Current.Dispatcher.Invoke( DispatcherPriority.Background, new Action(delegate { })); However I cannot figure out how to put the empty delegate into VB.NET, as VB.NET does not appear to support anonymous methods. Ideas? Edit: Possibly this? Application.Current.Dispatcher.Invoke( DispatcherPriority.Background, New Action(Sub() End Sub))

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• Safely Removing DataRow In ForEach

  - by ChloeRadshaw

  I dont understand why I cannot do the below - This should work?? foreach (DataRow dataRow in dataTable.Rows) { if (true) { dataRow.Delete(); } }

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• Static member variable containing object instances

  - by tom

  I have the following: function Preferences() { } Preferences.players = { 'player1': new Player() } players is a static member variable of Preferences and I'm trying to make it an object containing an instance of a Player. However, it doesn't appear to let me do this. It seems like it will allow me to define players if I make it a non-static member variable however. Like so: function Preferences() { var players = { 'player1' : new Player() } } Is it possible to create a static member variable containing instances of an object in JS?

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• JQuery data grid with sort, items, columns drag&drop. Is there any?

  - by Ole Jak

  JQuerry data grid with items&columns drag&drop, Items sort. Is there any? So I need Dragable\Dropable Items Drag and drop sorting of table columns Sort Items in columns You can taste how sweeet is Adobe Flex builder Data Grid and Its Drag-Drap here: http://blog.flexexamples.com/2007/09/19/dragging-rows-between-two-different-flex-datagrid-controls/ Is there any JQuery analog?

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• How to store data in a table locally and present it in C#

  - by joslinm

  I want to setup a table that can: Save the data on the user's machine Reference & present the data in the GUI Capable of adding rows dynamically during runtime What's the best way to go about this? DataGridView or TableLayoutPanel or...? I'm having trouble with SQL server CE, as I was going to connect it with the DataGridView, but I'm very new to this kind of work, and wondered if it was even necessary to use SQL.

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• Android:HttpClient does not run in Android 4.0 API

  - by user1635564

  I have written the code it works on Android 2.2 API but it does not work on Android 4.0 String url = textUrl.getText().toString(); HttpClient client = new DefaultHttpClient(); HttpGet request = new HttpGet(url); try { HttpResponse response = client.execute(request); textResult.setText(HttpHelper.request(response)); } catch (Exception e) { // TODO: handle exception textResult.setText("Failed"); }

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• F# compilation error: Unexpected type application

  - by Jim Burger

  In F#, given the following class: type Foo() = member this.Bar<'t> (arg0:string) = ignore() Why does the following compile: let f = new Foo() f.Bar<Int32> "string" While the following won't compile: let f = new Foo() "string" |> f.Bar<Int32> //The compiler returns the error: "Unexpected type application"

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• Android AudioRecorder object wont read from microphone.

  - by supersk

  I'm trying to build a voip application on a new android device, i use AudioRecorder to read the microphone but I'm getting no valid results, just white noise. This happen only on this new device(other work well) and this is probably because this device has PTT ability. Is there some workaround to avoid using AudioRecoder to receive streaming data from the microphone? Thanks. supersk.

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• Is this the best approach using generics to check for nulls

  - by user294747

  public static T IsNull<T>(object value, T defaultValue) { turn ((Object.Equals(value,null)) | (Object.Equals(value,DBNull.Value)) ? defaultValue : (T)value); } public static T IsNull<T>(object value) where T :new() { T defaultvalue = new T(); return IsNull(value, defaultvalue); } Have tested, and can use against data objects, classes and variables. Just want to know if there is better way to go about this.

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• adding filter to bluetooth discovery

  - by user1643325

  I want to just discover peripheral devices when i start my Bluetooth Device discovery, my app must not discover/show other devices. is this any how possible? this is how i am searching for devices IntentFilter filter = new IntentFilter("android.bluetooth.devicepicker.action.DEVICE_SELECTED"); registerReceiver(mBtPickReceiver,filter); startActivity(new Intent("android.bluetooth.devicepicker.action.LAUNCH") .putExtra("android.bluetooth.devicepicker.action.EXTRA_NEED_AUTH",false));

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• Server periodically freezing - Help Stabilizing

  - by JonDog

  We run an asp.net/sql server data collection website with a hand full of clients dumping data in and running reports. We moved to a new server (specs below) and have had issues with it freezing and having to reboot it a dozen times over the pass six months. The hosting company has mentioned possible causes (listed below) but cant give a definite answer on what is going wrong. They have offered to reconfigure how ever I like. We have benefited from having a much faster system and really dont want to get rid of the ssd's unless they are the issue. Two possible setup changes that I've talked with them about are also listed below. Any suggestions on what maybe causing the freezing issue as well as suggestion on a new setup would be great. My main questions are: Do SSD generally have problems running the OS & SQL Server on the same RAID Array? and Are the new SSD's still unrefined enough to be running in a production environment? Thanks Current: Xeon Quad Core E3-1270 3.40 Ghz 16 GB DDR3-1333 ECC SDRAM First Hard Drive: 120GB Intel SSD Second Hard Drive: 120GB Intel SSD Third Hard Drive: 120GB Intel SSD Fourth Hard Drive: 120GB Intel SSD SAS 4 Port RAID Card Windows 2012 Standard Edition - 64 Bit MSSQL 2008 Web Edition Possible Causes: Running Sql Server & OS on same RAID Array OS Software Issues Using SSD's CPU Underpowered Not enough RAM Option 1 2x Xeon Quad Core E5-2603 1.80 GHz 16 GB DDR3-1333 ECC SDRAM 1 x 240GB Intel SSD - OS 3 x 1 TB SATA HDD (7200 RPM) - SQL Server SATA 4 Port RAID Card Windows 2012 Standard Edition - 64 Bit Option 2 Dell PowerEdge E3-1270v2 3.5GHz 4 Cores 16 GB DDR3-1600 UDIMM 4 x 128 GB Samsung 840 Pro SSD Add-in H200 (SAS/SATA Controller), 4 Hard Drives - RAID 10 Windows 2012 Standard Edition - 64 Bit

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• How do I read a binary file in C#?

  - by tomcamara

  I have a file that exists within a text and a binary image, I need to read from 0 to 30 position the text in question, and the position on 31 would be the image in binary format. What are the steps that I have to follow to proceed with that problem? Currently, I am trying to read it using FileStream, and then I move the FileStream var to one BinaryReader as shown below: FileStream fs = new FileStream(filePath, FileMode.Open, FileAccess.Read) BinaryReader br = new BinaryReader(fs) From there forward, I'm lost.

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• Can java do a timer on command line?

  - by javaLearner.java

  HI I am a new java programmer (very new). What I want to do/test is (not sure if its recommendable or doable?), we know that System.out.println("Message"); will output the "Message" in command prompt. Is it possible to display the current time, without having to repeatly use the system.out.println()? Name, like instead of displaying: 10:00:01 10:00:02 10:00:03 I wand to have liek this: 10:00:0X where X will continue counting

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• How can I use from ismember

  - by ahmad hosseini

  Assuming A=[32512199.30 5401000.29 347.33 32512199.69 5401000.45 347.39 32512199.67 5401001.32 353.58 32512199.96 5401001.50 346.99 32512196.71 5401001.69 346.62 ] and B=[32512199.30 5401000.29 347.33 32512199.69 5401000.45 347.39 32512199.67 5401001.32 347.00 32512198.85 5401000.91 347.25 32512196.71 5401001.69 346.87 ] I want using ismember extract the rows that have same X and Y and different Z. X is first column, Y is the second and Z is third. in A and B I want extract from A 32512199.67 5401001.32 353.58 and 32512196.71 5401001.69 346.62 OR from B 32512199.67 5401001.32 347.00 and 32512196.71 5401001.69 346.87 How can I do it?

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• Set Controls with arbitrary positions on CTabItem

  - by Daziplqa

  Hi Guyz, I am new to GWT, and I need to set the controls positions arbitrary on CTabItem. I've used the following code, but it seems that it had no positioning effect, it just add the component to (0, 0) Label userName = new Label(folder, SWT.NONE); userName.setText("username"); userName.setBounds(10, 200, 200, 50); item.setControl(userName);

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• Table is realigned after setting the display property to 'block'

  - by Holicreature

  I'm having a table and i have a row which is initially set to the display property of 'none' and i changing it to 'block' at some selection of value from my select box , at that point of time the row is not aligned properly. My two columns are set inside a single column of the above row? but when i change it again to 'none' all the other rows are aligned correctly..

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• combobox in j2me

  - by learn

  how can i keep the combobox on the form in j2me with out using frameworks? i have tried this but it is not showing any drop down for selection. ChoiceGroup CoursePOP = new ChoiceGroup ("Pop Up choice", Choice.EXCLUSIVE, new String[] {"Python", "J2ME","Symbian"}, null);

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• mootools hash() in jquery?

  - by terrani

  Hi, I have been using mootools for a year now. I need to use jquery for my new projects. I always used hash() to make namespaces for my functions in mootools. For example, var person = new Hash({ say_name: function(){ }, say_age: function(){ } }); Does Jquery has similar stuff?

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• Data Annotations validation Built into model

  - by Josh

  I want to build an object model that automatically wires in validation when I attempt to save an object. I am using DataAnnotations for my validation, and it all works well, but I think my inheritance is whacked. I am looking here for some guidance on a better way to wire in my validation. So, to build in validation I have this interface public interface IValidatable { bool IsValid { get; } ValidationResponse ValidationResults { get; } void Validate(); } Then, I have a base class that all my objects inherit from. I did a class because I wanted to wire in the validation calls automatically. The issue is that the validation has to know the type of the class is it validating. So I use Generics like so. public class CoreObjectBase<T> : IValidatable where T : CoreObjectBase<T> { #region IValidatable Members public virtual bool IsValid { get { // First, check rules that always apply to this type var result = new Validator<T>().Validate((T)this); // return false if any violations occurred return !result.HasViolations; } } public virtual ValidationResponse ValidationResults { get { var result = new Validator<T>().Validate((T)this); return result; } } public virtual void Validate() { // First, check rules that always apply to this type var result = new Validator<T>().Validate((T)this); // throw error if any violations were detected if (result.HasViolations) throw new RulesException(result.Errors); } #endregion } So, I have this circular inheritance statement. My classes look like this then: public class MyClass : CoreObjectBase<MyClass> { } But the problem occurs when I have a more complicated model. Because I can only inherit from one class, when I have a situation where inheritance makes sense I believe the child classes won't have validation on their properties. public class Parent : CoreObjectBase<Parent> { //properties validated } public class Child : Parent { //properties not validated? } I haven't really tested the validation in these cases yet, but I am pretty sure that anything in child with a data annotation on it will not be automatically validated when I call Child.Validate(); due to the way the inheritance is configured. Is there a better way to do this?

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• VB.net SyncLock Object

  - by Budius

  I always seen on SyncLock examples people using Private Lock1 As New Object ' declaration SyncLock Lock1 ' usage but why? In my specific case I'm locking a Queue to avoid problems on mult-threading Enqueueing and Dequeueing my data. Can I lock the Queue object itself, like this? Private cmdQueue As New Queue(Of QueueItem) ' declaration SyncLock cmdQueue ' usage Any help appreciated. Thanks.

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• Group by with ActiveRecord in Rails

  - by Adnan

  Hello, I have a the following table with rows: ================================================================ id | name | group1 | group2 | group3 | group4 | ================================================================ 1 | Bob | 1 | 0 | 0 | 1| ================================================================ 2 | Eric| 0 | 1 | 0 | 1| ================================================================ 3 | Muris | 1 | 0 | 1 | 1| ================================================================ 4 | Angela | 0 | 0 | 0 | 1| ================================================================ What would be the most efficient way to get the list with ActiveRecords ordered by groups and show their count like this: group1 (2) group2 (1) group3 (1) group4 (4) All help is appreciated.

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