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What is the fastest or most elegant way to compute a set difference using Javascript arrays?
... A and B be two sets. I'm looking for really fast or elegant ways to compute the set difference ( A - B or A \B , depending on your preference) between them. The two sets are stored and manipulated as Javascript arrays, as the title says.
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sqlite database default time value 'now'
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@mckoss thanks to your comment, the create statement became: ... mycolumn default (strftime('%s','now'))
– larham1
Jun 15 '12 at 6:41
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How do I apply CSS3 transition to all properties except background-position?
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What is the difference between the Eclipse Package Explorer and the Eclipse Project Explorer?
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sphinx-build fail - autodoc can't import/find module
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How do you calculate the average of a set of circular data? [closed]
...ular data. For example, I might have several samples from the reading of a compass. The problem of course is how to deal with the wraparound. The same algorithm might be useful for a clockface.
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Numpy index slice without losing dimension information
... retain the dimension of the array" ... Well it'll certainly, utterly, and completely screw up matrix multiplication (np.matmul() or @). Just got burned by this.
– Jean-François Corbett
Mar 27 '19 at 12:02
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Downloading MySQL dump from command line
... Linode because I don't have the Linux sysadmin skills necessary; before I complete the transition to a more noob-friendly service, I need to download the contents of a MySQL database. Is there a way I can do this from the command line?
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Using sed and grep/egrep to search and replace
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Use this command:
egrep -lRZ "\.jpg|\.png|\.gif" . \
| xargs -0 -l sed -i -e 's/\.jpg\|\.gif\|\.png/.bmp/g'
egrep: find matching lines using extended regular expressions
-l: only list matching filenames
-R: search recursivel...
How to permanently export a variable in Linux?
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