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How to merge lists into a list of tuples?
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In Python 2:
>>> list_a = [1, 2, 3, 4]
>>> list_b = [5, 6, 7, 8]
>>> zip(list_a, list_b)
[(1, 5), (2, 6), (3, 7), (4, 8)]
In Python 3:
>>> list_a = [1, 2, 3, 4]
>>> list_b = [5, 6, 7, 8]
>>> list(zi...
How to gracefully handle the SIGKILL signal in Java
...acefully (SIGTERM from the manager process) or a shutdown has occurred (in order to relaunch automatically the job on startup).
As a basis, I always make my long-running threads periodically aware of interrupted status and throw an InterruptedException if they interrupted. This enables execution fi...
Best way to get child nodes
...wsers. What I want to know is how the different objects are structured, in order to get a better understanding of the similarities and differences between them. I'll edit my question later to make that clearer, sorry for the mixup
– Elias Van Ootegem
Apr 30 '12...
Re-raise exception with a different type and message, preserving existing information
...ble to whatever code catches the new exception.
By using this feature, the __cause__ attribute is set. The built-in exception handler also knows how to report the exception's “cause” and “context” along with the traceback.
In Python 2, it appears this use case has no good answer (as describ...
Difference between attr_accessor and attr_accessible
...ment: new(attrs) or update_attributes(attrs).
Here's a mass assignment:
Order.new({ :type => 'Corn', :quantity => 6 })
You can imagine that the order might also have a discount code, say :price_off. If you don't tag :price_off as attr_accessible you stop malicious code from being able to ...
Is C++ context-free or context-sensitive?
... the important part is that the parser needs to perform the computation in order to perform syntactic analysis. It could have been any computation expressible as a template instantiation and there is every reason to believe that C++ template instantiation is Turing-complete. See, for example, Todd L...
Checking if a string can be converted to float in Python
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Except that you forgot to name your function "will_it_float".
– unmounted
Apr 10 '09 at 1:07
3
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Proper way to return JSON using node or Express
...ing to send a json file you can use streams
var usersFilePath = path.join(__dirname, 'users.min.json');
apiRouter.get('/users', function(req, res){
var readable = fs.createReadStream(usersFilePath);
readable.pipe(res);
});
...
Why were pandas merges in python faster than data.table merges in R in 2012?
....table has time series merge in mind. Two aspects to that: i) multi column ordered keys such as (id,datetime) ii) fast prevailing join (roll=TRUE) a.k.a. last observation carried forward.
I'll need some time to confirm as it's the first I've seen of the comparison to data.table as presented.
UPD...
Can I use multiple versions of jQuery on the same page?
...1.3.js"></script>
<script type="text/javascript">
var jQuery_1_1_3 = $.noConflict(true);
</script>
<!-- load jQuery 1.3.2 -->
<script type="text/javascript" src="http://example.com/jquery-1.3.2.js"></script>
<script type="text/javascript">
var jQuery_1_3...