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Python != operation vs “is not”
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@viksit. None has few methods and almost no attributes. If your __eq__ test expected a method or attribute, it might break. def __eq__( self, other ): return self.size == other.size. For example, will break if other happens to be None.
– S.Lott
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How can I interrupt a ServerSocket accept() method?
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And what to do if the connection was already accepted and the thread is waiting for some data: while((s=in.readLine()) != null) ?
– Alex Fedulov
Aug 24 '12 at 10:56
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All combinations of a list of lists
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@Reman It's not entirely clear what you want to get but if it is, for example, also the reverse of each tuple you can use a a wrapper function that takes a as input, iterates over itertools.product(*a) and yields both the tuple produced by itertools and a reverse version (e.g. cre...
Check if current directory is a Git repository
...rg.uk/).
# Distributed under the GNU General Public License, version 2.0.
if [ -d .git ]; then
echo .git;
else
git rev-parse --git-dir 2> /dev/null;
fi;
You could either wrap that in a function or use it in a script.
Condensed into a one line condition suitable for bash and zsh
[ -d .git...
Pick a random element from an array
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Swift 4.2 and above
The new recommended approach is a built-in method on the Collection protocol: randomElement(). It returns an optional to avoid the empty case I assumed against previously.
let array = ["Frodo", "Sam", "Wis...
Checking if jquery is loaded using Javascript
I am attempting to check if my Jquery Library is loaded onto my HTML page. I am checking to see if it works, but something is not right. Here is what I have:
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How to create a bash script to check the SSH connection?
...ou'll have to grep the message (nmap does not use the return-value to show if a port was filtered, closed or open).
EDIT2:
If you're interested in the actual state of the ssh-port, you can substitute grep open with egrep 'open|closed|filtered':
$ nmap host -PN -p ssh | egrep 'open|closed|filtered...
Difference in System. exit(0) , System.exit(-1), System.exit(1 ) in Java
I'd like to know the difference between the following in Java
11 Answers
11
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Path.Combine for URLs?
...I am accepting this one. It seems to work in all cases I have encountered. If people don't want to take a dependency, I posted an answer that also works fine.
– Brian MacKay
Nov 28 '18 at 15:33
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pandas DataFrame: replace nan values with average of columns
...ld be a scalar or a dict, however, it seems to work with a Series as well. If you want to pass a dict, you could use df.mean().to_dict().
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