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How to set default values in Rails?
...use the same default to be set in any model using it in any standard Rails app.
However, if you only want default values set in specific cases -- say, it's an inherited model that shares a table with some others -- then another elegant way is do it directly in your Rails code when the model object ...
How do I ZIP a file in C#, using no 3rd-party APIs?
.... We use a file extension to associate the download file with our desktop app. One small problem we ran into was that its not possible to just use a third-party tool like 7-zip to create the zip files because the client side code can't open it -- ZipPackage adds a hidden file describing the conten...
When to use an assertion and when to use an exception
...e an exception to check for a condition in my code, I wonder when it is an appropriate time to use an assertion?
11 Answers...
What is the Swift equivalent of respondsToSelector?
...ift most of the time you can achieve what you need with the ? optional unwrapper operator. This allows you to call a method on an object if and only if the object exists (not nil) and the method is implemented.
In the case where you still need respondsToSelector:, it is still there as part of the N...
How to use NSURLConnection to connect with SSL for an untrusted cert?
... open source (BSD license) library called ASIHTTPRequest that provides a wrapper around the lower-level CFNetwork APIs. They recently introduced the ability to allow HTTPS connections using self-signed or untrusted certificates with the -setValidatesSecureCertificate: API. If you don't want to pull ...
How do I add a Fragment to an Activity with a programmatically created content view
..., and that view must have a custom id. Using the default id will crash the app. Here's the updated code:
public class DebugExampleTwo extends Activity {
private static final int CONTENT_VIEW_ID = 10101010;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.on...
Simulate low network connectivity for Android [closed]
I would like to test my application for cases of low network connectivity. Except standing in the elevator, what is the best way to do this? I've tried wrapping my phone in an aluminum foil, but it didn't help much.
...
How to dynamically update a ListView on Android [closed]
...item_1,
getStringArrayList());
}
Running the app now should show your previous ListView, with a nice box above. In order to make that box do something, we need to take the input from it, and make that input filter the list. While a lot of people have tried to do this ma...
How to increase storage for Android Emulator? (INSTALL_FAILED_INSUFFICIENT_STORAGE)
...ecause it answered the question when it was asked.
The newer answer, that applies to the newer Android Studio tools, can be found here: https://stackoverflow.com/a/35828035/62 -- it's a great answer with screen shots. If you're using Android Studio, ignore the Eclipse answer below.
Original Eclips...
Using a custom image for a UITableViewCell's accessoryView and having it respond to UITableViewDeleg
...g the same for the cell's accessoryView . My setup for the accessoryView happens by the way of something like this:
10 Ans...