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How do you create a random string that's suitable for a session ID in PostgreSQL?
...use in session verification using PostgreSQL. I know I can get a random number with SELECT random() , so I tried SELECT md5(random()) , but that doesn't work. How can I do this?
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What is the syntax rule for having trailing commas in tuple definitions?
...le from a set of function arguments, operator precedence, or to allow line breaks.
The trailing comma for tuples, lists, or function arguments is good style especially when you have a long initialisation that is split over multiple lines. If you always include a trailing comma then you won't add an...
Adding a legend to PyPlot in Matplotlib in the simplest manner possible
Please consider the graphing script below:
7 Answers
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Is there a query language for JSON?
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Sure, how about:
JsonPath.
Json Query
They all seem to be a bit work in progress, but work to some degree. They are also similar to XPath and XQuery conceptually; even though XML and JSON have different conceptual models (hierarchic...
Merge two branch revisions using Subversion
I'd like to merge all the changes that took place between rev 10 & the HEAD rev on http://url-of-branch-a and apply them to http://url-of-branch-b .
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Appending a vector to a vector [duplicate]
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a.insert(a.end(), b.begin(), b.end());
or
a.insert(std::end(a), std::begin(b), std::end(b));
The second variant is a more generically applicable solution, as b could also be an array. However, it requires C++11. If you want to work with ...
SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed
...ning appropriate migrations, Twitter/Google/yahoo logins seem to work fine but the facebook login throws exception:
37 Answ...
In what cases could `git pull` be harmful?
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Summary
By default, git pull creates merge commits which add noise and complexity to the code history. In addition, pull makes it easy to not think about how your changes might be affected by incoming changes.
The git pull command ...
How to format a float in javascript?
...he code isn't self-explanatory.
edit: ...or just use toFixed, as proposed by Tim Büthe. Forgot that one, thanks (and an upvote) for reminder :)
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What is the meaning of single and double underscore before an object name?
Can someone please explain the exact meaning of having leading underscores before an object's name in Python, and the difference between both?
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