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Turn a string into a valid filename?
...n has been moved to django/utils/text.py, and that file also contains a get_valid_filename function.
– Denilson Sá Maia
Dec 3 '13 at 21:39
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Standardize data columns in R
...
z = runif(10, 10, 20))
dat
dat2 <- dat %>% mutate_at(c("y", "z"), ~(scale(.) %>% as.vector))
dat2
which gives me this:
> dat
x y z
1 29.75859 3.633225 14.56091
2 30.05549 3.605387 12.65187
3 30.21689 3.318092 13.04672
4 29.53086 3.079992...
Read file data without saving it in Flask
... quick example: file = request.files.get('file') filetype = magic.from_buffer(file.read(1024))
– endolith
Dec 26 '14 at 20:00
7
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Does Foreign Key improve query performance?
... getting a 404 error. It's about having usable data. It's about not losing orders and financial data for reports for instance because of the incompetence of the developers. There is NO EXCUSE for not using foreign keys.
– HLGEM
Oct 19 '11 at 14:20
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Automatically add newline at end of curl response body
...ther with some text and an
ending newline:
curl -w 'We downloaded %{size_download} bytes\n' www.download.com
So try adding the following to your ~/.curlrc file:
-w "\n"
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Center a column using Twitter Bootstrap 3
....
PS:
After you add this class, don't forget to set classes by the right order.
<div class="col-md-6 center-block">Example</div>
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Initialization of all elements of an array to one default value in C++?
.... It tells the compiler to create an iteration variable i, it tells it the order in which the elements should be initialized, and so on. Of course, the compiler is likely to optimize that away, but the point is that here you are overspecifying the problem, forcing the compiler to work harder to get ...
What is a good reason to use SQL views?
...most useful when you always need
to join the same set of tables say an
Order with an Order Detail to get
summary calculation fields etc.
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Vagrant error : Failed to mount folders in Linux guest
...lugin can cause an almost identical issue if you let it config.vbguest.auto_update = true (default) github.com/dotless-de/vagrant-vbguest/issues/141
– KCD
Jun 24 '15 at 21:53
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What's the use of session.flush() in Hibernate
...it but hits the database and executes the query and gets rollback too.
In order to commit we use commit() on Transaction object.
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