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Get all keys of an NSDictionary as an NSArray
... general, if you wonder if a specific class has a specific method, look up Apple's own documentation. In this case, see NSDictionary class reference. Go through all the methods. You'll discover many useful methods that way.
...
Add timestamps to an existing table
... @Michael: I've been using MongoDB exclusively with the 3.1 app I'm working on so I haven't worked with 3.1 AR migrations. The docs indicate that everything is moving towards instance methods (for unknown reasons).
– mu is too short
Sep 25 '11 at...
API vs. Webservice [closed]
...
An API (Application Programming Interface) is the means by which third parties can write code that interfaces with other code. A Web Service is a type of API, one that almost always operates over HTTP (though some, like SOAP, can use...
How to update Ruby to 1.9.x on Mac?
...n turn forces you to install Xcode (if you haven't already) https://itunes.apple.com/us/app/xcode/id497799835 AND/OR install the GCC package from: https://github.com/kennethreitz/osx-gcc-installer to avoid errors running "make".
Edit: As of Mavericks you can choose to install only the Xcode command...
Why is vertical-align: middle not working on my span or div?
...other div element. However when I put vertical-align: middle , nothing happens. I've tried changing the display properties of both elements, and nothing seems to work.
...
Show spinner GIF during an $http request in AngularJS?
...);
//regular angular initialization continued below....
angular.module('myApp', [ 'myApp.directives', 'SharedServices']).
//.......
Here is the rest of it (HTML / CSS)....using
$('#mydiv').show();
$('#mydiv').hide();
to toggle it. NOTE: the above is used in the angular module at beginning o...
How can I sharpen an image in OpenCV?
... [-1,-1,-1]])
sharpened = cv2.filter2D(image, -1, kernel) # applying the sharpening kernel to the input image & displaying it.
cv2.imshow('Image Sharpening', sharpened)
cv2.waitKey(0)
cv2.destroyAllWindows()
There is another method of subtracting a blurred version of ...
How to convert a Base64 string into a Bitmap image to show it in a ImageView?
...s.Bitmap;
import android.graphics.BitmapFactory;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Base64;
import android.widget.ImageView;
import java.io.ByteArrayOutputStream;
public class MainActivity extends AppCompatActivity {
@Override
pr...
How to stop EditText from gaining focus at Activity startup in Android
...setting android:focusableInTouchMode="true" to parent layout was the good approach thanks @Muhammad Babar
– sujith s
Mar 24 '15 at 10:15
8
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Fully custom validation error message with Rails
... Lovely. I was looking for getting a one-liner message for my API app and you have shown me how to manipulate the errors class. TY
– ARK
Aug 7 at 15:02
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