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How to extract text from a PDF? [closed]
...hen easy to write an app to strip out blank lines, etc, and suck in all 30,000 records. -dSIMPLE and -dCOMPLEX made no difference in this case.
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Convert a Unicode string to a string in Python (containing extra symbols)
...de('utf8')
'\xc2\x9c10'
>>> s.encode('utf16')
'\xff\xfe\x9c\x001\x000\x00'
This raw string of bytes can be written to a file. However, note that when reading it back, you must know what encoding it is in and decode it using that same encoding.
When writing to files, you can get rid of th...
How to change 'Maximum upload size exceeded' restriction in Shiny and save user file inputs?
...by default (I don't know what the size is exactly, but I'm guessing it's 5,000 KB). I'd like to remove this restriction. How can I do so, and what is there a general rule of thumb for the size of user uploads?
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How to randomly select rows in SQL?
... table "customerNames" which has two columns "Id" and "Name" and approx. 1,000 results.
11 Answers
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Quickest way to compare two generic lists for differences
...is the quickest (and least resource intensive) to compare two massive (>50.000 items) and as a result have two lists like the ones below:
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Best database field type for a URL
...Firefox 1.5.x. However, longer URLs will work. I stopped testing after 100,000 characters."
– Wesley Murch
May 17 '12 at 21:56
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Cleaning `Inf` values from an R dataframe
...mapply(is.infinite, dat)] <- NA)
# user system elapsed
# 15.281 0.000 13.750
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How can I create a two dimensional array in JavaScript?
...ay containing 1...N
Alternatively (but more inefficient 12% with n = 10,000)
Array(2).fill(null).map(() => Array(4))
The performance decrease comes with the fact that we have to have the first dimension values initialized to run .map. Remember that Array will not allocate the positions unt...
Configure apache to listen on port other than 80
..., change the port as
Listen 8079
Then go to /etc/apache2/sites-enabled/000-default.conf
And change the first line as
<VirtualHost *: 8079>
Now restart
sudo service apache2 restart
Apache will now listen on port 8079 and redirect to /var/www/html
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How can I avoid running ActiveRecord callbacks?
...plicated
end
EDIT: after_save is not a symbol, but that's at least the 1,000th time I've tried to make it one.
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