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python list in sql query as parameter
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How can you profile a Python script?
... the interpreter, like this:
import cProfile
cProfile.run('foo()')
Even more usefully, you can invoke the cProfile when running a script:
python -m cProfile myscript.py
To make it even easier, I made a little batch file called 'profile.bat':
python -m cProfile %1
So all I have to do is run:...
Difference between Observer, Pub/Sub, and Data Binding
... observers one observable can notify.
Pub/Sub
Another name (perhaps with more "broadcast" semantics) of the Observable/Observer pattern, which usually implies a more "dynamic" flavor - observers can subscribe or unsubscribe to notifications and one observable can "shout out" to multiple observers....
Handle file download from ajax post
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What is the purpose of std::make_pair vs the constructor of std::pair?
...o1;
MyLongClassName2 o2;
auto p = std::make_pair(o1, o2);
instead of the more verbose:
std::pair<MyLongClassName1,MyLongClassName2> p{o1, o2};
which repeats the types, and can be very long.
Type inference works in that pre-C++17 case because make_pair is not a constructor.
make_pair is ...
find -exec cmd {} + vs | xargs
Which one is more efficient over a very large set of files and should be used?
3 Answers
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When should I use Kruskal as opposed to Prim (and vice versa)?
...icantly faster in the limit when you've got a really dense graph with many more edges than vertices. Kruskal performs better in typical situations (sparse graphs) because it uses simpler data structures.
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How can you use an object's property in a double-quoted string?
..." # yields "3"
PowerShell only expands variables in those cases, nothing more. To force evaluation of more complex expressions, including indexes, properties or even complete calculations, you have to enclose those in the subexpression operator $( ) which causes the expression inside to be evaluat...
Is it bad to have my virtualenv directory inside my git repository?
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View a file in a different Git branch without changing branches
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I wish I could upvote this answer more than once, honestly.
– Vincent Fourmond
Jan 22 '17 at 13:44
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