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Why is there no xrange function in Python3?
...x has been optimized for 64-bit performance in ways that hurt 32-bit.
But does it really matter? Check this out, with 3.3.0 64-bit again:
In [86]: %timeit [x for x in range(10000000) if x%4 == 0]
1 loops, best of 3: 3.65 s per loop
So, building the list takes more than twice as long than the ent...
Difference between no-cache and must-revalidate
...and no-cache aren't exactly identical. With must-revalidate, if the server doesn't respond to a revalidation request, the browser/proxy is supposed to return a 504 error. With no-cache, it would just show the cached content, which would be probably preferred by the user (better to have something sta...
How can I call a custom Django manage.py command directly from a test driver?
I want to write a unit test for a Django manage.py command that does a backend operation on a database table. How would I invoke the management command directly from code?
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How to highlight cell if value duplicate in same column for google spreadsheet?
... It works. But why? Assuming A1 is a criterion for the equation, doesn't this formula compare all cells in range to A1?
– mafonya
Sep 17 '15 at 10:28
9
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How to format numbers as currency string?
...unctionality. However, toLocaleString in its older incarnations (pre-Intl) does not actually support locales: it uses the system locale. Therefore, be sure that you're using the correct version (MDN suggests to check for the existence of Intl). Also, the performance of both is the same for a single ...
How to override trait function and call it from the overridden function?
... @PhillipWhelan would be nice if you could add more information on what does "not work as expected". Written like that it doesn't help much in understanding what kind of wrong behaviour to expect, and does not assure us that this is not a temporary mistake of you. Maybe there is some SO question ...
How to only find files in a given directory, and ignore subdirectories using bash
...dev/*/abc-* | fgrep -v /dev/.udev ... except at least on my Linux /dev/*/* does not include files in /dev/.udev/* so you can omit the fgrep -v.
– tripleee
Oct 10 '11 at 16:29
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Creating threads - Task.Factory.StartNew vs new Thread()
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No it doesn´t. It just starts tasks. This could enqueue the task at the thread pool or execute it synchronously. The TPL is about freeing you from managing the threads/concurrency yourself and using the best for your platform (lik...
How do I combine a background-image and CSS3 gradient on the same element?
...); /* W3C */
}
These 2 lines are the fallback for any browser that doesn't do gradients.
See notes for stacking images only IE < 9 below.
Line 1 sets a flat background color.
Line 2 sets the background image fallback.
The final line sets a background image and gradient for browsers t...
JSON: why are forward slashes escaped?
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JSON doesn't require you to do that, it allows you to do that. It also allows you to use "\u0061" for "A", but it's not required. Allowing \/ helps when embedding JSON in a <script> tag, which doesn't allow </ inside stri...