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List comprehension: Returning two (or more) items for each item
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>>> from itertools import chain
>>> f = lambda x: x + 2
>>> g = lambda x: x ** 2
>>> list(chain.from_iterable((f(x), g(x)) for x in range(3)))
[2, 0, 3, 1, 4, 4]
Timings:
from timeit import timeit
f...
Restoring MySQL database from physical files
Is it possible to restore a MySQL database from the physical database files. I have a directory that has the following file types:
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Command line to remove an environment variable from the OS level configuration
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To remove the variable from the current environment (not permanently):
set FOOBAR=
To permanently remove the variable from the user environment (which is the default place setx puts it):
REG delete HKCU\Environment /F /V FOOBAR
If the variabl...
Redirect to named url pattern directly from urls.py in django?
In Django, how can I do a simple redirect directly from urls.py? Naturally I am a well organized guy, favoring the DRY principle, so I would like to get the target based on it's named url pattern, rather than hard coding the url.
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Extract public/private key from PKCS12 file for later use in SSH-PK-Authentication
I want to extract the public and private key from my PKCS#12 file for later use in SSH-Public-Key-Authentication.
7 Answ...
Finding quaternion representing the rotation from one vector to another
... u and v. Is there a way of finding a quaternion representing the rotation from u to v?
7 Answers
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What's the difference between event.stopPropagation and event.preventDefault?
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stopPropagation stops the event from bubbling up the event chain.
preventDefault prevents the default action the browser makes on that event.
Examples
preventDefault
$("#but").click(function (event) {
event.preventDefault()
})
$("#foo").click(f...
How to catch an Exception from a thread
...t waits until the thread dies. At some moment, I throw a runtime exception from the thread, but I can't catch the exception thrown from the thread in the main class.
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How to save/restore serializable object to/from file?
...erializable] attribute.</para>
/// <para>To prevent a variable from being serialized, decorate it with the [NonSerialized] attribute; cannot be applied to properties.</para>
/// </summary>
/// <typeparam name="T">The type of object being written to the binary file.</...
how to get html content from a webview?
Which is the simplest method to get html code from a webview?
I have tried several methods from stackoverflow and google, but can't find an exact method. Please mention an exact way.
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