How do I check if a channel has at least one number using Ruby?

I need to check to see if a string contains at least one number in it using Ruby (and I assume some sort of regex?). How would I do that?You can use the String class's =~ method with the regex /\d/ as the argument. Here's an example: s = 'abc123' if

This class is not a key encoding value for the Label key

This question already has an answer here: What does this mean? "'NSUnknownKeyException', reason: - this class is not key value coding-compliant for the key X" 63 answers I am using a custom UITableViewCell which already has a few UI elements on

Alignment Requirements for Atomic Instructions x86

Microsoft offers the InterlockedCompareExchange function for performing atomic compare-and-swap operations. There is also an _InterlockedCompareExchange intrinsic. On x86 these are implemented using the cmpxchg instruction. However, reading through t

Unexplained Nullpointer error

I'm developing an android application where a user is told what letter to draw and the letter recognition is handled using gestures. I've got no idea why this is breaking. There are no errors being detected in eclipse but the logcat is saying it's a

How to read the depth image Kinect V2 with matlab

I have extracted 16-bit floating data maxtix of the depth from kinect V2 . how could i visual see it ? I have attached a sample of the matrix as a png file. im sure it's simple but i didnt found it on web. Thanks! You have a 16bit gray level range bu

How do I export hg repository changesets to svn repository

I know there is hgsubversion extension for mercurial. But before I knew how it works, I maintain two separate repositories, one is SVN repo and one is Hg repo. I made most of my recent changes in the Hg repository and I need to "push" them to th

in_array can not find a value

I have the following array: Array ( [0] => Array ( [video_id] => 161162806 ) [1] => Array ( [video_id] => 161736574 ) [2] => Array ( [video_id] => 156382678 ) ) I try to find a value, but even though it's in the array it doesn't find it.

Codeigniter - & gt; Edit the page

I am getting the following error when I try and access: I get the following error: PHP Fatal error: Call to a member function getCMSPage() on a non-object in controllers/home.php on line 22 The issue with this is tha

C # Index was outside the boundaries of the table

I'm hoping someone can help with an exception I've inherited. Basically I'm writing the rows in a datagrid to a text file. Which works fine apart from when the row is hidden, when the row is hidden the exception "Index was outside the bounds of the a

Add to the dictionary from the table of keys

For the last couple of days I have been struggling with the following issue I need to set a key and a value deep in a dictionary of dictionaries. I know the keys to the dictionary where I want to set a key but I cannot figure out how to get there. Th

Observable / Observer does not work?

I tried implementing a static Observable in my Application subclass, but it's not working. No exceptions or error messages, but my update() callback doesn't get called. public class MyApplication extends Application{ public static

NodeJS: return data from an asynchronous function

I'm trying to write a function to create a new user on my database (mongodb) and then return that user as an object which I defined. However, since the call to insert the user is async, result.nInserted is always undefined because the async code does

GL_UNSIGNED_SHORT_5_6_5 not stated?

I have a problem loading a texture using SDL library. Usually I make programs on Linux but I try to create a code that is compatible with Visual Studio also. On Linux are everything OK but on Visual Studio it crashes in "GL_UNSIGNED_SHORT_5_6_5"

String accepts only certain characters

import java.util.Scanner; public class Test { public static void main(String[] args) { Scanner input = new Scanner(; System.out.println("Enter Code"); String code =; } public static boolean isValidCode (String code) { } }

How do I configure the default PostgreSQL schema in Play?

We are using Play Framework 2.1 in our web application. We want to explicitly set the database schema (not public schema) in our PostgreSQL database that's the application's database. How can I set it ?As far as I know, from what I have tried before.

Can I move application icons to the iPhone's API?

I'm almost certain I already know the answer to this question but nonetheless: Is it possible to move an app's icon to a particular page using the iPhone API, that is, without the user dragging the icon themselves?There's no API for Springboard that

performance mysql multiple row selection

is there any performance difference between: SELECT * FROM table WHERE id IN (1,2,3) versus SELECT * FROM table WHERE id = 1 SELECT * FROM table WHERE id = 2 SELECT * FROM table WHERE id = 3 whereby you execute each query, so there are 3 total querie

Is the Google application engine: get_by_id unreliable?

I have a very simple query by get_by_id : query = Query().get_by_id(int(self.request.get('id'))) The int(self.request.get('id')) have no problem passing the value. My problem is that sometime the query work and sometime aren't. When it was not workin

using getElementsByName to enable the radio button

I'm attempting to validate whether a group of radio buttons is checked in order o validate a form. function formValidator() { var triedIt = document.getElementsByName('tried'); if(radioChecked(triedIt, "Please select") { return true; } return fa

Same animation for multiple target name

Just a doubt.I have three images in my WPF application.Im going to give blink effect for that three images.So i gave this code. <Storyboard x:Key ="AlarmBlink"> <DoubleAnimation Storyboard.TargetName="Img1" Storyboard.TargetPr

how do I store the floor plan dynamically?

I have a college project to create floor plan designing software.. For that I am trying to create floorplan with help of HTML Canvas and grids. I want to save the interactive floor plan created into database but not able to as when floor plan is save