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Python syntax for “if a or b or c but not all of them”
...r b or c) and not (a and b and c):
My advice is to use whichever form is more significant to you and to other programmers. The first means "there is something false, but also something true", the second "There is something true, but not everything". If I were to optimize or do this in hardware, I ...
Separation of business logic and data access in django
...by your end user, the former is where you actually store your data.
Furthermore, I've interpreted the 3rd part of your question as: how to notice failure to keep these models separate.
These are two very different concepts and it's always hard to keep them separate. However, there are some common pa...
Why doesn't Objective-C support private methods?
...
More python being "obj-c-ic" :). Guido was quite proactive in maintaining Python on NeXT systems, including creating the 1st version of PyObjC. Thus, ObjC did influence python somewhat.
– bbum
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How do I debug error ECONNRESET in Node.js?
...ptly closed its end of the connection. This is most probably due to one or more application protocol errors. You could look at the API server logs to see if it complains about something.
But since you are also looking for a way to check the error and potentially debug the problem, you should take a...
JavaScript dependency management: npm vs. bower vs. volo [closed]
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How to vertically center a div for all browsers?
...ontent on the page before it will push the whole block down. This makes it more independent of other page content.
– Billbad
Apr 3 '12 at 17:00
11
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Decorators with parameters?
...ument(argument)
result = function(*args, **kwargs)
more_funny_stuff()
return result
return wrapper
return decorator
Here you can read more on the subject - it's also possible to implement this using callable objects and that is also explained there.
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How to call asynchronous method from synchronous method in C#?
...sult = AsyncContext.RunTask(MyAsyncMethod).Result;
*Update 4/14/2014: In more recent versions of the library the API is as follows:
var result = AsyncContext.Run(MyAsyncMethod);
(It's OK to use Task.Result in this example because RunTask will propagate Task exceptions).
The reason you may need A...
C# code to validate email address
... real way is to send a message to confirm.
Note that e-mail addresses are more forgiving than you might first assume. These are all perfectly valid forms:
cog@wheel
"cogwheel the orange"@example.com
123@$.xyz
For most use cases, a false "invalid" is much worse for your users and future proofing...
What is Unicode, UTF-8, UTF-16?
...If you'll be working mostly with ASCII characters, then UTF-8 is certainly more memory efficient. However, if you're working mostly with non-European scripts, using UTF-8 could be up to 1.5 times less memory efficient than UTF-16. When dealing with large amounts of text, such as large web-pages or l...