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Call a function with argument list in python
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If the latter is what you want, use the *args form when wrapper calls func2, but not in 'def wrapper'.
– Alex Martelli
May 3 '09 at 19:21
add a co...
Postgres and Indexes on Foreign Keys and Primary Keys
...ed. Each index you add slows DML operations down slightly, so you pay a performance cost on every INSERT, UPDATE or DELETE. If the index is rarely used it may not be worth having.
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Is there something like Annotation Inheritance in java?
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How to compute the similarity between two text documents?
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The common way of doing this is to transform the documents into TF-IDF vectors and then compute the cosine similarity between them. Any textbook on information retrieval (IR) covers this. See esp. Introduction to Information Retrieval, which is free and available o...
How to see which flags -march=native will activate?
...his is suboptimal. The output of --help=target doesn't display CPU cache information, of which the methods both elias and 42n4 below have listed. Specifically, on gcc 4.9.2 on a Phenom, the output includes these: --param l1-cache-size=64 --param l1-cache-line-size=64 --param l2-cache-size=512
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Hand Coded GUI Versus Qt Designer GUI [closed]
...sure to use QButtonDialogBox
to make sure your buttons have the proper platform-layout.
You could probably do something more limited like xPad with limited Designer functionality.
I wouldn't think you could write something like OpenOffice solely with Designer but maybe that's not the point.
I'd us...
What's the difference between NOT EXISTS vs. NOT IN vs. LEFT JOIN WHERE IS NULL?
...f the database is good at optimising the query, the two first will be transformed to something close to the third.
For simple situations like the ones in you question, there should be little or no difference, as they all will be executed as joins. In more complex queries, the database might not be ...
Catch a thread's exception in the caller thread in Python
...s in its own stack. One way I can think of right now to communicate this information to the parent thread is by using some sort of message passing, so you might look into that.
Try this on for size:
import sys
import threading
import Queue
class ExcThread(threading.Thread):
def __init__(sel...
Populating a ListView using an ArrayList?
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Rails: FATAL - Peer authentication failed for user (PG::Error)
...res user
vim /etc/postgresql/9.1/main/pg_hba.conf
9.1 is version return form upper command
and replace
local all postgres peer
to
local all postgres md5
Restart the service
sudo service postgresql re...