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Foreign key from one app into another in Django
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Late, I know, but it's mostly a matter of choice and organisation. I have "internal" apps that are not ever intended for external use. They can depend on each other and exist mainly to give me a convenient organisation of my files and namespaces. External apps (eg from Djan...
Recursive directory listing in DOS
...oter information try this:
dir /s /b
(For sure this will work for DOS 6 and later; might have worked prior to that, but I can't recall.)
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Is the pImpl idiom really used in practice?
I am reading the book "Exceptional C++" by Herb Sutter, and in that book I have learned about the pImpl idiom. Basically, the idea is to create a structure for the private objects of a class and dynamically allocate them to decrease the compilation time (and also hide the private implementatio...
Replace specific characters within strings
...ove specific characters from strings within a vector, similar to the Find and Replace feature in Excel.
6 Answers
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HTTP GET Request in Node.js Express
...I need to connect to another service. I am hoping the call is asynchronous and that the callback contains the remote server's response.
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How do I get the current time only in JavaScript
How can I get the current time in JavaScript and use it in a timepicker?
18 Answers
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Is Meyers' implementation of the Singleton pattern thread safe?
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In C++11, it is thread safe. According to the standard, §6.7 [stmt.dcl] p4:
If control enters
the declaration concurrently while the variable is being initialized, the concurrent execution shall wait for completion of the initialization.
GCC and VS support for the...
From ND to 1D arrays
...-+----------+-----------+-----------+-------------+
Conclusion
ravel and reshape(-1)'s execution time was consistent and independent from ndarray size.
However, ravel is tad faster, but reshape provides flexibility in reshaping size. (maybe that's why numpy doc recommend to use it instead. O...
How to send POST request?
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If you really want to handle with HTTP using Python, I highly recommend Requests: HTTP for Humans. The POST quickstart adapted to your question is:
>>> import requests
>>> r = requests.post("http://bugs.python.org", data={'number...
Python class inherits object
...erit from object?
In Python 3, apart from compatibility between Python 2 and 3, no reason. In Python 2, many reasons.
Python 2.x story:
In Python 2.x (from 2.2 onwards) there's two styles of classes depending on the presence or absence of object as a base-class:
"classic" style classes: the...