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Using custom std::set comparator
...e default order of the items in a set of integers to be lexicographic instead of numeric, and I can't get the following to compile with g++:
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How can I use redis with Django?
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This Python module for Redis has a clear usage example in the readme: http://github.com/andymccurdy/redis-py
Redis is designed to be a RAM cache. It supports basic GET and SET of keys plus the storing of collections such as dictionaries. You can cache RDBMS queries by storing their outp...
Why doesn't Dijkstra's algorithm work for negative weight edges?
...a of it is: If we have a vertex in open such that its cost is minimal - by adding any positive number to any vertex - the minimality will never change.
Without the constraint on positive numbers - the above assumption is not true.
Since we do "know" each vertex which was "closed" is minimal - we ca...
SQLAlchemy: Creating vs. Reusing a Session
...talk to your DB. For me that means the second I would do my first session.add(x) or something similar, I would first do
2...
PHP_SELF vs PATH_INFO vs SCRIPT_NAME vs REQUEST_URI
...ex.php/faq/whatever . I need a reliable way for a script to know what it's address is, so it will know what to do with the navigation. I've used mod_rewrite , as per CodeIgniter documentation.
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Why use argparse rather than optparse?
...on 2.7 documentation includes yet another command-line parsing module. In addition to getopt and optparse we now have argparse .
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What is the difference between Amazon SNS and Amazon SQS?
...NS send messages to email, sms or http end point apart from SQS. There are advantages to coupling SNS with SQS. You may not want an external service to make connections to your hosts (firewall may block all incoming connections to your host from outside). Your end point may just die because of heavy...
Why are unsigned int's not CLS compliant?
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Not all languages have the concept of unsigned ints. For example VB 6 had no concept of unsigned ints which I suspect drove the decision of the designers of VB7/7.1 not to implement as well (it's implemented now in VB8).
To quote:
http://msdn.microsoft.com/en-us/library/12a7a7h3.aspx
The CLS wa...
Performance of Arrays vs. Lists
...mple and use List<T> etc.
Of course, this only applies if you are reading all of the data; a dictionary would be quicker for key-based lookups.
Here's my results using "int" (the second number is a checksum to verify they all did the same work):
(edited to fix bug)
List/for: 1971ms (589725...
How to use Greek symbols in ggplot2?
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joran
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answered Mar 14 '11 at 2:44
RamnathRamnath
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