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Cartesian product of x and y array points into single array of 2D points
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>>> numpy.transpose([numpy.tile(x, len(y)), numpy.repeat(y, len(x))])
array([[1, 4],
[2, 4],
[3, 4],
[1, 5],
[2, 5],
[3, 5]])
See Using numpy to build an array of all combinations of two arrays for a gene...
Images can't contain alpha channels or transparencies
...FAIK png with transparency is not allowed. use jpg OR update your png (photoshop or whatever you using to create the png) and delete the transparency areas. if you work with shadows, use jpg, that will do no headaches.
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How to find the last field using 'cut'
....com" to be moc.elgoog.spam
cut uses dot (ie '.') as the delimiter, and chooses the first field, which is moc
lastly, we reverse it again to get com
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Is there a way to make R beep/play a sound at the end of a script?
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@Mulone: works for me, MacOSX 10.11.1, R 3.2.2; you hear the faint "poump" sound.
– Benjamin
Nov 12 '15 at 0:32
6
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PDOException “could not find driver”
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Note that, for those using Apache or other web server, one needs to restart Apache for the changes to take effect: sudo systemctl restart httpd.service
– Mugoma J. Okomba
Aug 31 '16 at 5:31
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Finding the Eclipse Version Number
I have posted how to find it in Eclipse Gallileo, but if anyone has information on older versions feel free to post it below.
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List of tables, db schema, dump etc using the Python sqlite3 API
... @jbuddy_13 sqlite> is the sqlite command line client prompt. The purpose of the example was to demonstrate how one could query the database to list tables and schema.
– converter42
May 25 at 16:11
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Is there a way to use shell_exec without waiting for the command to complete?
...e:
ob_end_clean();
ignore_user_abort();
ob_start();
header("Connection: close");
echo json_encode($out);
header("Content-Length: " . ob_get_length());
ob_end_flush();
flush();
// execute your command here. client will not wait for response, it already has one above.
You can find the detailed expl...
IntelliJ IDEA way of editing multiple lines
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Since Idea IntelliJ IDEA 13.1 there is possibility to edit multiple lines.
Use:
Alt + Shift + Mouse click
for selection. More about this new improvement in IntelliJ blogpost here. Very useful feature.
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ImportError: No module named Crypto.Cipher
...nd you might say that there are some, but I tried the solutions (although most are not even solutions) and nothing worked.
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