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Selecting a row of pandas series/dataframe by integer index
...The frame comes with an added index column giving error ValueError: cannot set a row with mismatched columns (see stackoverflow.com/questions/47340571/…)
– Growler
Nov 16 '17 at 23:14
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How do I enlarge an EER Diagram in MySQL Workbench?
...Model Options;
Choose the "Diagram" tab;
Uncheck "Use defaults from global settings..." at the bottom;
Confirm "Ok". This may crash Workbench, depending on the version and/or operating system.
Either way, "Model > Diagram Properties and Size..." should now be enabled, even if you had to reopen W...
What is the equivalent of the C++ Pair in Java?
...n why there is no Pair<L,R> in Java? What would be the equivalent of this C++ construct? I would rather avoid reimplementing my own.
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How to print without newline or space?
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In Python 3, you can use the sep= and end= parameters of the print function:
To not add a newline to the end of the string:
print('.', end='')
To not add a space between all the function arguments you want to print:
print('a', 'b', 'c', sep='')
You can pass any string to e...
Get elements by attribute when querySelectorAll is not available without using libraries?
How can you do the equivalent to
8 Answers
8
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Using CookieContainer with WebClient class
...populate the Cookie header before making the request and then pull out the Set-Cookies header on the response. There are helper methods on the CookieContainer class which make creating and parsing these headers easier: CookieContainer.SetCookies() and CookieContainer.GetCookieHeader(), respectively....
MIN/MAX vs ORDER BY and LIMIT
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Most DBMSes have limit/offset or equivalent, and it is used in the majority of apps I have worked on (not as an alternative to MIN, but for other purposes such as pagination.)
– finnw
Jan 9 '09 at 1:36
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Hidden Features of Java
...s ThreadSafeSortedSub extends Souper {
@Override
ConcurrentSkipListSet<String> values() {
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}
}
You can call the subclass's values method and obtain a sorted thread safe Set of Strings without having to down cast to the ConcurrentSkipListSet.
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How to copy a file to multiple directories using the gnu cp command
Is it possible to copy a single file to multiple directories using the cp command ?
22 Answers
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Aborting a shell script if any command returns a non-zero value?
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Add this to the beginning of the script:
set -e
This will cause the shell to exit immediately if a simple command exits with a nonzero exit value. A simple command is any command not part of an if, while, or until test, or part of an && or || list.
See t...