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Join vs. sub-query
... to distinguish the two. (also the 'very rare' really depends on your data/app).
– Unreason
May 28 '10 at 9:48
21
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How to reuse an ostringstream?
...lear out and reuse an ostringstream (and the underlying buffer) so that my app doesn't have to do as many allocations. How do I reset the object to its initial state?
...
How to create a new database using SQLAlchemy?
...postgres so I ended up doing this to ignore the exception if the database happens to already exist with SQL Server:
import logging
import sqlalchemy
logging.basicConfig(filename='app.log', format='%(asctime)s-%(levelname)s-%(message)s', level=logging.DEBUG)
engine = create_engine('mssql+pyodbc://m...
Node.js on multi-core machines
...
@Serob_b - well, yes. Running a Node.js app on multiple machines is very common. There's no library needed to do so. You just run your code on multiple machines and distribute load between them. Architecting your software so that it scales (ie, it stores state in s...
Multiprocessing vs Threading Python [duplicate]
...t properly release the GIL will run in parallel
Great option for I/O-bound applications
Cons
cPython - subject to the GIL
Not interruptible/killable
If not following a command queue/message pump model (using the Queue module), then manual use of synchronization primitives become a necessity (dec...
Convert PDF to clean SVG? [closed]
...hs, too. I also find that they often lose the font data, but don't seem to approximate a good, installed font. How does PDF display it if SVG can't?
– DanRedux
Apr 23 '12 at 21:30
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How to convert an xml string to a dictionary?
...lement) == 1 or element[0].tag != element[1].tag:
self.append(XmlDictConfig(element))
# treat like list
elif element[0].tag == element[1].tag:
self.append(XmlListConfig(element))
elif element.text:
te...
Importing from a relative path in Python
... list of paths python looks at to import things):
import sys, os
sys.path.append(os.path.join(os.path.dirname(__file__), '..', 'Common'))
import Common
os.path.dirname(__file__) just gives you the directory that your current python file is in, and then we navigate to 'Common/' the directory and i...
Use a URL to link to a Google map with a marker on it
...s URLs introduces universal cross-platform syntax that you can use in your applications.
Have a look at the following document:
https://developers.google.com/maps/documentation/urls/guide
You can use URLs in search, directions, map and street view modes.
For example, to show the marker at specif...
Automatically resize jQuery UI dialog to the width of the content loaded by ajax
...ation and examples on this. I've got a number of jQuery UI dialogs in my application attached to divs that are loaded with .ajax() calls. They all use the same setup call:
...