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Can't start site in IIS (use by another process)

... Check using netstat -aon or netstat -aon | findstr 0.0:80 in a command prompt to see which Process Id is LISTENING to port :80 and then watch for that Process Id (PID) in Task Manager with view->select columns-> process id checked. End that process, restart IIS and you are done. (Note:...
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What does “program to interfaces, not implementations” mean?

... Interfaces are just contracts or signatures and they don't know anything about implementations. Coding against interface means, the client code always holds an Interface object which is supplied by a factory. Any instance returned by the factory would be of type In...
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Django auto_now and auto_now_add

...Any field with the auto_now attribute set will also inherit editable=False and therefore will not show up in the admin panel. There has been talk in the past about making the auto_now and auto_now_add arguments go away, and although they still exist, I feel you're better off just using a custom save...
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Transactions in REST?

...er. In the same way that you can add multiple items to a shopping basket and then submit that basket to process the order, you can add Bob's account entry to the transaction wrapper and then Bill's account entry to the wrapper. When all the pieces are in place then you can POST/PUT the transacti...
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CSS background image alt attribute

...t, this is often recommended where presenting visual icons is more compact and user-friendly than an equivalent list of text blurbs. Any use of image sprites can benefit from this approach. It is quite common for hotel listings icons to display amenities. Imagine a page which listed 50 hotel and ea...
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Implementing two interfaces in a class with same method. Which interface method is overridden?

Two interfaces with same method names and signatures. But implemented by a single class then how the compiler will identify the which method is for which interface? ...
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Relationship between SciPy and NumPy

...numpy as _num from numpy import oldnumeric from numpy import * from numpy.random import rand, randn from numpy.fft import fft, ifft from numpy.lib.scimath import * The log10 function you get in scipy comes from numpy.lib.scimath. Looking at that code, it says: """ Wrapper functions to more user-f...
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Java Delegates?

...same effect by using reflection to get Method objects you can then invoke, and the other way is to create an interface with a single 'invoke' or 'execute' method, and then instantiate them to call the method your interested in (i.e. using an anonymous inner class). You might also find this article ...
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Logging Clientside JavaScript Errors on Server [closed]

... You could try setting up your own handler for the onerror event and use XMLHttpRequest to tell the server what went wrong, however since it's not part of any specification, support is somewhat flaky. Here's an example from Using XMLHttpRequest to log JavaScri...
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Finding quaternion representing the rotation from one vector to another

I have two vectors u and v. Is there a way of finding a quaternion representing the rotation from u to v? 7 Answers ...