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How to implement the activity stream in a social network

I'm developing my own social network, and I haven't found on the web examples of implementation the stream of users' actions... For example, how to filter actions for each users? How to store the action events? Which data model and object model can I use for the actions stream and for the actions it...
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Google fonts URL break HTML5 Validation on w3.org

...e.g. &amp etc). The user agent is then expected to follow RFC 3987 and convert the IRI to percent encoded UTF-8 before submitting it over HTTP (tools.ietf.org/html/rfc3987). – Mikko Rantalainen Oct 23 '17 at 6:30 ...
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What is the Swift equivalent of -[NSObject description]?

...is on a Swift type you must implement the CustomStringConvertible protocol and then also implement a string property called description. For example: class MyClass: CustomStringConvertible { let foo = 42 var description: String { return "<\(type(of: self)): foo = \(foo)>" ...
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Why are Subjects not recommended in .NET Reactive Extensions?

... used standard INPC properties and then using a simple Extension method to convert this to IObservable. Additionally, you will need custom WPF bindings to work with your behaviour subjects. Now your poor team has to learn WPF, MVVM, Rx and your new framework too. – Lee Campbell...
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Android Fragment handle back button press [duplicate]

... Handling OnKey from View does not work – skayred Nov 3 '11 at 9:41 14 ...
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Why is there “data” and “newtype” in Haskell? [duplicate]

...ata definition that obeys some restrictions (e.g., only one constructor), and that due to these restrictions the runtime system can handle newtype s more efficiently. And the handling of pattern matching for undefined values is slightly different. ...
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Can a C# class inherit attributes from its interface?

...an existing type (to avoid duplication), but it is only valid for property and indexer usage. As an example: using System; using System.ComponentModel; class Foo { [AttributeProvider(typeof(IListSource))] public object Bar { get; set; } static void Main() { var bar = TypeDescr...
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How can I make my own event in C#?

... Here's an example of creating and using an event with C# using System; namespace Event_Example { //First we have to define a delegate that acts as a signature for the //function that is ultimately called when the event is triggered. //You wi...
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Deserialize JSON with C#

... It is important to note that the setters for the id and name properties must be left public. If they are set to private or protected, the deserialization will execute without error but all data will be null. – Isaac Zais Feb 19 '15 at 17:...
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SQL Switch/Case in 'where' clause

...ly below, you formed the SQL incorrectly. I tested mine in SQLServer 2005 and it worked fine. – Bob Probst Oct 16 '08 at 0:48 ...