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Can PostgreSQL index array columns?
...;
CREATE INDEX idx_test on "Test" USING GIN ("Column1");
-- To enforce index usage because we have only 2 records for this test...
SET enable_seqscan TO off;
EXPLAIN ANALYZE
SELECT * FROM "Test" WHERE "Column1" @> ARRAY[20];
Result:
Bitmap Heap Scan on "Test" (cost=4.2...
How do I get indices of N maximum values in a NumPy array?
...n able to find one.
If this solution turns out to be too slow (especially for small n), it may be worth looking at coding something up in Cython.
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Batch File; List files in directory, only filenames?
...tory. The dir command will do this, but it also gives a bunch of other information; I want it to list ONLY the file names and exclude anything else.
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Google maps API V3 - multiple markers on exact same spot
...exact same spot can be seen on http://www.ejw.de/ejw-vor-ort/ (scroll down for the map and click on a few markers to see the spider-effect).
That seems to be the perfect solution for your problem.
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Extracting text from HTML file using Python
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I tried both html2text and nltk but they didn't work for me. I ended up going with Beautiful Soup 4, which works beautifully (no pun intended).
– Ryan Shea
Apr 30 '15 at 18:58
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What is the type of lambda when deduced with “auto” in C++11?
I had a perception that, type of a lambda is a function pointer. When I performed following test, I found it to be wrong ( demo ).
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Remove a string from the beginning of a string
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Plain form, without regex:
$prefix = 'bla_';
$str = 'bla_string_bla_bla_bla';
if (substr($str, 0, strlen($prefix)) == $prefix) {
$str = substr($str, strlen($prefix));
}
Takes: 0.0369 ms (0.000,036,954 seconds)
And with:
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Export specific rows from a PostgreSQL table as INSERT SQL script
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@poshest It works for me in 9.5. What exactly did you try?
– Clodoaldo Neto
Nov 20 '16 at 10:16
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How to print a dictionary line by line in Python?
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for x in cars:
print (x)
for y in cars[x]:
print (y,':',cars[x][y])
output:
A
color : 2
speed : 70
B
color : 3
speed : 60
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How do I run a single test with Nose in Pylons
..._controller.py.
To run a specific test class and method use a path of the form module.path:ClassNameInFile.method_name, that is, with a colon separating the module/file path and the objects within the file. module.path is the relative path to the file (e.g. tests/my_tests.py:ClassNameInFile.method_...