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Design Patterns: Factory vs Factory method vs Abstract Factory

...vide hotels or / and provide tourist attraction packages. Now, when a user selects next, the website needs to decide what objects it needs to create. Should it only create the travel or hotel object too. Now, if you envision adding another website to your portfolio, and you believe that the same co...
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Usage of __slots__?

...This message comes from the oldest protocol, which is the default. You can select the latest protocol with the -1 argument. In Python 2.7 this would be 2 (which was introduced in 2.3), and in 3.6 it is 4. >>> pickle.loads(pickle.dumps(f, -1)) <__main__.Foo object at 0x1129C770> in Py...
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Explaining Apache ZooKeeper

... simple: The server team with 3 servers has the majority and is allowed to select the new leader. Even if you just have 3 servers and one of them fails the other 2 still form the majority and can agree that one of them will become the new leader. I realize once you think about it some time and un...
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What's the shebang/hashbang (#!) in Facebook and new Twitter URLs for?

... compatible for any web crawler. The hard problem is to generate any (or selected) "AJAX page state" as plain HTML for SEO, in ItsNat is very easy and automatic, the same site is in the same time SPI or page based for SEO (or when JavaScript is disabled for accessibility). With other web framework...
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What is the main difference between PATCH and PUT request?

...es. http patch method is like a UPDATE query in SQL which sets or updates selected columns only and not the whole row. Example: You could use PATCH method to update order status. PATCH /api/users/40450236/order/10234557 Request Body: {status: 'Delivered'} ...
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Performance differences between debug and release builds

...al in the x86 jitter because it has few registers to work with. Having it select the right ones is critical to perf. These are very important optimizations that can make a great deal of difference when, for example, you profile the Debug build of your app and compare it to the Release build. Tha...
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How to get users to read error messages?

...another extremely vital point as well! Allow the end-user to be able to select/copy the error message so that they can if they do so wish, to email to the help support team or development team. Edit#2: My bad! Whoops, thanks to DanM who mentioned that about the car, I got the name mixed up, it...
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Remove tracking branches no longer on remote

...ddition, it will work if you use a "Squash and Merge" workflow, unlike the selected answer. – Jake Levitt May 22 '18 at 13:33 4 ...
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Using npm behind corporate proxy .pac

...hat I did is as follows: Used Fiddler, with "Automatically Authenticate" selected In fiddler custom rules, i added if (m_AutoAuth) {oSession["X-AutoAuth"] = "domain\\username:password";} Finally in npm i set the proxy to http://localhost:8888 This worked fine. ...
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How can I add some small utility functions to my AngularJS application?

... Having utility functions as a service allows you to selectively access them in your controllers.. if no controllers use them, then the service won't be instantiated. – StuR Feb 28 '14 at 14:50 ...