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Fast permutation -> number -> permutation mapping algorithms
I have n elements. For the sake of an example, let's say, 7 elements, 1234567. I know there are 7! = 5040 permutations possible of these 7 elements.
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How do I delete all messages from a single queue using the CLI?
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rabbitmqadmin is the perfect tool for this
rabbitmqadmin purge queue name=name_of_the_queue_to_be_purged
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Sorting a vector in descending order
...s a bad idea. Use either the second one, or this:
struct greater
{
template<class T>
bool operator()(T const &a, T const &b) const { return a > b; }
};
std::sort(numbers.begin(), numbers.end(), greater());
That way your code won't silently break when someone decides numb...
Deleting a Google App Engine application
Is it possible to delete an GAE application after it has been created?
11 Answers
11
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Redis command to get all available keys?
...re a Redis command for fetching all keys in the database? I have seen some python-redis libraries fetching them. But was wondering if it is possible from redis-client.
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Where can I find the error logs of nginx, using FastCGI and Django?
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Errors are stored in the nginx log file. You can specify it in the root of the nginx configuration file:
error_log /var/log/nginx/nginx_error.log warn;
On Mac OS X with Homebrew, the log file was found by default at the following location:
/usr/local/var/log/nginx
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What are the differences between JSON and JavaScript object? [duplicate]
I am new to JSON and JavaScript objects.
3 Answers
3
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How to have multiple CSS transitions on an element?
It's a pretty straightforward question but I can't find very good documentation on the CSS transition properties. Here is the CSS snippet:
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How to change text transparency in HTML/CSS?
I'm very new to HTML/CSS and I'm trying to display some text as like 50% transparent. So far I have the HTML to display the text with full opacity
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Table name as variable
...For dynamic queries you should generate the full SQL dynamically, and use sp_executesql to execute it.
Here is an example of a script used to compare data between the same tables of different databases:
static query:
SELECT * FROM [DB_ONE].[dbo].[ACTY]
EXCEPT
SELECT * FROM [DB_TWO].[dbo].[ACTY]
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