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HttpServletRequest to complete URL
...URL().toString());
String queryString = request.getQueryString();
if (queryString == null) {
return requestURL.toString();
} else {
return requestURL.append('?').append(queryString).toString();
}
}
...
Test whether string is a valid integer
... trying to do something common enough: Parse user input in a shell script. If the user provided a valid integer, the script does one thing, and if not valid, it does something else. Trouble is, I haven't found an easy (and reasonably elegant) way of doing this - I don't want to have to pick it apart...
Algorithm to return all combinations of k elements from n
...ickly, you'll have problems by 20 elements in your set -- 20C3 = 1140. And if you want to iterate over the set it's best to use a modified gray code algorithm so you aren't holding all of them in memory. These generate the next combination from the previous and avoid repetitions. There are many of t...
Postgis installation: type “geometry” does not exist
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Thanks. BTW, If someone using 'psql' to run this code, make sure the role have 'Superuser' attribute/privilege.
– Yang
Dec 12 '15 at 3:09
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How to modify a text file?
...indicated, you can append to a file or overwrite part of it using seek but if you want to add stuff at the beginning or the middle, you'll have to rewrite it.
This is an operating system thing, not a Python thing. It is the same in all languages.
What I usually do is read from the file, make the m...
setting an environment variable in virtualenv
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Very funny gif :D
– chachan
Nov 4 '14 at 22:47
3
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Python json.loads shows ValueError: Extra data
...)
ValueError: Extra data: line 1 column 3 - line 1 column 5 (char 2 - 4)
If you want to dump multiple dictionaries, wrap them in a list, dump the list (instead of dumping dictionaries multiple times)
>>> dict1 = {}
>>> dict2 = {}
>>> json.dumps([dict1, dict2])
'[{}, {}]...
How to revert initial git commit?
...tial commit, but keeps all previously commited changes added to the index. If you want to also remove those changes, just execute a following git reset --hard. Even if incomplete, this answer is indeed the best one, so avoid using rm -fr .git (unless you know what you are doing).
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Vagrant's port forwarding not working [closed]
...omments.
First thing: try curl 'http://localhost:80' from within the VM. If that doesn't work, then it's definitely not the port forwarding.
Next: try curl -v 'http://localhost:4567/' from your host machine. Curl might give you a better error message than Safari.
I'd check that there are no fir...
How to Execute SQL Server Stored Procedure in SQL Developer?
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What are your parameters if they are varchar then only you need the quotes...other than that can't think of anything...you could try this just run only this in a new windows- EXEC proc_name and see if it asks you for the second parameter...then at l...