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Numpy `logical_or` for more than two arguments
... no, as the docs explicitly say, the only parameters are x1, x2, and optionally out:
numpy.logical_or(x1, x2[, out]) = <ufunc 'logical_or'>
You can of course chain together multiple logical_or calls like this:
>>> x = np.array([True, True, False, False])
>>> y = np.a...
Bash array with spaces in elements
...through its indices, like so, it works if I add the elements either numerically or with escapes:
for ((i = 0; i < ${#FILES[@]}; i++))
do
echo "${FILES[$i]}"
done
Any of these declarations of $FILES should work:
FILES=(2011-09-04\ 21.43.02.jpg
2011-09-05\ 10.23.14.jpg
2011-09-09\ 12.31.16....
Java equivalent of unsigned long long?
... @PP.: I don't think it's possible to define sensible rules which allow free interaction between signed and unsigned types when at least one of them has defined wrapping behavior. That having been said, unsigned byte or unsigned short would have caused zero trouble since bytes don't intera...
Graphviz: How to go from .dot to a graph?
...neato and twopi. If graphiz isn't in your path, figure out where it is installed and run it from there.
You can change the output format by varying the value after -T and choosing an appropriate filename extension after -o.
If you're using windows, check out the installed tool called GVEdit, it ma...
How to validate phone numbers using regex
...trying to put together a comprehensive regex to validate phone numbers. Ideally it would handle international formats, but it must handle US formats, including the following:
...
How do I install from a local cache with pip?
I install a lot of the same packages in different virtualenv environments. Is there a way that I can download a package once and then have pip install from a local cache?
...
When should null values of Boolean be used?
Java boolean allows values of true and false while Boolean allows true , false , and null . I have started to convert my boolean s to Boolean s. This can cause crashes in tests such as
...
PostgreSQL - Rename database
...isconnect from the database to be renamed
\c postgres
-- force disconnect all other clients from the database to be renamed
SELECT pg_terminate_backend( pid )
FROM pg_stat_activity
WHERE pid <> pg_backend_pid( )
AND datname = 'name of database';
-- rename the database (it should now have...
Age from birthdate in python
...
That probably depends on your definition of "age". For all practical purposes a birthday is usually given as a date, not timezone-aware datetime (i.e., "born" is missing the details). Most people are not born at midnight sharp (so usually observe prematurely :-)), and when in a d...
分布式数据（DistributedData）使用指导 · App Inventor 2 中文网
...; margin-bottom: 4px; background: url(/static/images/feedback.svg) 50% / 100% auto no-repeat; } /*手机版：反馈浮动按钮收小*/ @media screen and (max-width: 700px) { .feedback-pop { font-size: 13px; line-height: 14px; padding: 10px 7px; } .feedback-pop .feedback-img { width: 2...