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How do I create delegates in Objective-C?
...en assigned to the delegate property another object. To create one, you define a class that implements the delegate methods you're interested in, and mark that class as implementing the delegate protocol.
For example, suppose you have a UIWebView. If you'd like to implement its delegate's webViewDi...
how to draw smooth curve through N points using javascript HTML5 canvas?
For a drawing application, I'm saving the mouse movement coordinates to an array then drawing them with lineTo. The resulting line is not smooth. How can I produce a single curve between all the gathered points?
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How to implement the Android ActionBar back button?
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Selvin already posted the right answer. Here, the solution in pretty code:
public class ServicesViewActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedI...
How do I clone a Django model instance object and save it to the database?
In the database, I want to add another object which is a copy of the object above.
13 Answers
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Mysql - How to quit/exit from stored procedure
...ave very simple question but i did't get any simple code to exit from SP using Mysql.
Can anyone share with me how to do that?
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What is the best way to auto-generate INSERT statements for a SQL Server table?
We are writing a new application, and while testing, we will need a bunch of dummy data. I've added that data by using MS Access to dump excel files into the relevant tables.
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What do querySelectorAll and getElementsBy* methods return?
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Your getElementById() code works since IDs have to be unique and thus the function always returns exactly one element (or null if none was found).
However, getElementsByClassName(), querySelectorAll(), and other getElementsBy* methods return an array-like co...
Getting Django admin url for an object
Before Django 1.0 there was an easy way to get the admin url of an object, and I had written a small filter that I'd use like this: <a href="{{ object|admin_url }}" .... > ... </a>
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How to add calendar events in Android?
I'm just getting up to speed on Android, and today in a project meeting someone said that Android has no native calendar app so users just use whatever calendar app they like.
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Accessing Session Using ASP.NET Web API
I realize session and REST don't exactly go hand in hand but is it not possible to access session state using the new Web API? HttpContext.Current.Session is always null.
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