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Is key-value observation (KVO) available in Swift?

...osure, then `[weak self]` is not needed print("bar property is now \(object.bar)") } } } Note, in Swift 4, we now have strong typing of keypaths using the backslash character (the \.bar is the keypath for the bar property of the object being observed). Also, because it's us...
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Retrieve the position (X,Y) of an HTML element relative to the browser window

I want to know how to get the X and Y position of HTML elements such as img and div in JavaScript relative to the browser window. ...
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Many-to-many relationship with the same model in rails?

...column names are non-standard as well (not post_id), to prevent conflict. Now in your model, you simply need to tell Rails about these couple of non-standard things. It will look as follows: class Post < ActiveRecord::Base has_and_belongs_to_many(:posts, :join_table => "post_connection...
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Equivalent C++ to Python generator pattern

...y one stack-less and the other stack-full. It's tough nut to crack, so for now I am waiting. In the meantime though, stack-less coroutines are implementable near directly as Input Iterators (just, without the sugar). – Matthieu M. Jan 13 '15 at 19:11 ...
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how to convert from int to char*?

The only way I know is: 9 Answers 9 ...
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Android Studio Stuck at Gradle Download on create new project

...he android studio. It just makes android studio a more fragmented software now with all pieces here and there. – Ankit Tanna May 23 '15 at 5:54 ...
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What does Serializable mean?

... Thank you. I think I got it now. – Sunburst275 Mar 20 at 14:54 add a comment  |  ...
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Remove URL parameters without refreshing page

...ll/be/deleted/ To become: https://domain.tld/my-new-url.php Action Now let's try a different approach. Say you need to keep the file's name. The file name comes after the last / and before the query string ?. http://www.someDomain.com/really/long/address/keepThisLastOne.php?name=john Wil...
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How to use hex color values

... countelements is now just count :) – Hlung Apr 6 '15 at 16:24 ...
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Handle Guzzle exception and get HTTP body

...ception for both (it's their superclass) Code to handle such errors thus now looks something like this: $client = new GuzzleHttp\Client; try { $client->get('http://google.com/nosuchpage'); } catch (GuzzleHttp\Exception\ClientException $e) { $response = $e->getResponse(); $re...