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Search found 613 results on 25 pages for 'x ray'.

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IConnectableObservables in Rx

- by Ray Booysen

Hi there Can someone explain the differences between an Observable and a ConnectableObservable? The Rx Extensions documentation is very sparse and I don't understand in what cases the ConnectableObservable is useful. This class is used in the Replay/Prune methods.

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Threading is slow and unpredictable?

- by Jake

I've created the basis of a ray tracer, here's my testing function for drawing the scene: public void Trace(int start, int jump, Sphere testSphere) { for (int x = start; x < scene.SceneWidth; x += jump) { for (int y = 0; y < scene.SceneHeight; y++) { Ray fired = Ray.FireThroughPixel(scene, x, y); …

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Craziest JavaScript behavior I've ever seen

- by Dan Ray

And that's saying something. This is based on the Google Maps sample for Directions in the Maps API v3. <html> <head> <meta name="viewport" content="initial-scale=1.0, user-scalable=no"/> <meta http-equiv="content-type" content="text/html; charset=UTF-8"/> <title>Google Directions</title> <script…

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Displaying UserControls based on the type a TreeView selection is bound to

- by Ray Wenderlich

I am making an app in WPF in a style similar to Windows Explorer, with a TreeView on the left and a pane on the right. I want the contents of the right pane to change depending on the type of the selected element in the TreeView. For example, say the top level in the Tree View contains objects of class "A", and if you expand the "A"…

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Improving the efficiency of Kinect for Windows DTWGestureRecognition Application

- by Ray

Currently I am using the DTWGestureRecognition open source tool for Kinect SDK v1.5. I have recorded a few gestures and use them to navigate through Windows 7. I also have implemented voice control for simple things such as opening PowerPoint, Chrome, etc. My main issue is that the application uses quite a bit of my CPU power which…

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Is there a way to get the "FromProperty" of the System.Data.Metadata.Edm.NavigationProperty?

- by Ray

On EF4: e.g: I have a SystemRole entityType that has a SystemUsers navigation property, and SystemUser entityType has a SystemRoles navigation property, the association is from SystemRole.SystemRoleId to SystemUser.SystemUserId. My question is: Is there a way to get the "SystemRole.SystemRoleId" & "SystemUser.SystemUserId" from…

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Handling session between two pages in iframe-based facebook app.

- by Ray Yun

I'm a newbie to iframe based facebook application and stuck with session related problems. There are just two pages in my app. First page got many fb_sig_* parameters from facebook platform but when I click a anchor to next page, those fb_sig_* were lost because this is just direct request from end user's browser not from facebook.…

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Rails acts_as_taggable_on grouped alphabetically?

- by Ray Dookie

Having sorted the tag_counts hash via the following code: sorted_tags = Contact.tag_counts.sort{ |x,y| x.name.downcase <= y.name.downcase } what is the easiest/most efficient way to display the tags in my view grouped by letters? i.e A - "Alpha", "Apple", "Aza" B - "Beta", "Bonkers" . . . Z - "Zeta", "Zimmer" Any ideas?

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Why doesn't IB see my IBAction?

- by Dan Ray

I've been staring at this for way too long. There's nothing fancy happening here, and I've done this dozens of times, yet Interface Builder steadfastly refuses to provide me an action target for -(IBAction)slideDirections. I'm at the point where I'm willing to post publicly and feel stupid. So let 'er rip. Here's my .h: #import…

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Can foreign key constraints be temporarily disabled using TSQL?

- by Ray Vega

Are disabling and enabling FK constraints supported in SQL Server? Or is my only option to 'drop and then re-'create' the constraints?

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Why doesn't this UIButton show its text label?

- by Dan Ray

Everything about this UIButton renders great except the text that's supposed to be on it. NSLog demonstrates that the text is in the right place. What gives? UIButton *newTagButton = [UIButton buttonWithType:UIButtonTypeRoundedRect]; [newTagButton addTarget:self action:@selector(showNewTagField)…

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SQL Server Query Slow from PHP, but FAST from SQL Mgt Studio - WHY???

- by Ray

I have a fast running query (sub 1 sec) when I execute the query in SQL Server Mgt Studio, but when I run the exact same query in PHP (on the same db instace) using FreeTDS v8, mssql_query(), it takes much longer (70+ seconds). The tables I'm hitting have an index on a date field that I'm using…

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Application.ProcessMessages hangs???

- by X-Ray

my single threaded delphi 2009 app (not quite yet complete) has started to have a problem with Application.ProcessMessages hanging. my app has a TTimer object that fires every 100 ms to poll an external device. i use Application.ProcessMessages to update the screen when something changes so…

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Creating New Objects in JavaScript

- by Ken Ray

I'm a relatively newbie to object oriented programming in JavaScript, and I'm unsure of the "best" way to define and use objects in JavaScript. I've seen the "canonical" way to define objects and instantiate a new instance, as shown below. function myObjectType(property1, propterty2) { …

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How do I create a directory from within Emacs?

- by Ray Vega

How exactly can I create a new directory using Emacs? What commands do I use? (If possible, please provide an example)

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Interpreters: How much simplification?

- by Ray

In my interpreter, code like the following x=(y+4)*z echo x parses and "optimizes" down to four single operations performed by the interpreter, pretty much assembly-like: add 4 to y multiply <last operation result> with z set x to <last operation result> echo x In modern…

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UNICODE Names From Character.

- by dev ray

Hi, Can anyone tell me how to get the Unicode name of a character in MFC. e.g. - Character - Name Z - LATIN CAPITAL LETTER Z [ - LEFT SQUARE BRACKET etc. Thanks, Dev

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Is there a faster way to parse through a large file with regex quickly?

- by Ray Eatmon

Problem: Very very, large file I need to parse line by line to get 3 values from each line. Everything works but it takes a long time to parse through the whole file. Is it possible to do this within seconds? Typical time its taking is between 1 minute and 2 minutes. Example file size is…

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Facebook requests 3 post_authorize/post_remove. How can I stop it?

- by Ray Yun

When user authorize or remove application, Facebook always request post_authorize or post_remove callback 3 times. Only I throws HTTP 500 error, it stop calling them. Yeah, it would be easy to ignore subsequent requests when I successfully handled that. So this maybe academic question.…

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Making a view scrollable when keyboard active

- by Dan Ray

I have a view with half a dozen text fields and labels, and a button. I want it to be that when the keyboard pops up, the view becomes scrollable, so you can scroll the view up and see the bottom half of the fields without having to dismiss the keyboard to get to them. Just putting it…

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Why am I getting this warning about my app delegate and CLLocationManageDelegate?

- by Dan Ray

Observe this perfectly simple UIViewController subclass method: -(IBAction)launchSearch { OffersSearchController *search = [[OffersSearchController alloc] initWithNibName:@"OffersSearchView" bundle:nil]; EverWondrAppDelegate *del =…

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release vs setting-to-nil to free memory

- by Dan Ray

In my root view controller, in my didReceiveMemoryWarning method, I go through a couple data structures (which I keep in a global singleton called DataManager), and ditch the heaviest things I've got--one or maybe two images associated with possibly twenty or thirty or more…

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XPATH: select subset of xml file

- by Ray

In my case, I have: ...... How can i just return: if I use /booklist/book[@id=1], I can only get But I also need the root element. Thanks

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How- XLST Transformation

- by Yuan Ray

Just wanted to ask on how to get the author names in the given xml sample below and put an attribut of eq="yes". EQ means Equal Contributors. This is the XML. <ArticleFootnote Type="Misc"> <Para>John Doe and Jane Doe are equal contributors.</Para>…

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error with redirect using listener JSF 2.0

- by Ray

I have a index.xhtml page <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xmlns:h="http://java.sun.com/jsf/html" …

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