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What's the difference between libev and libevent?
...ibev simply doesn't have one (for example, there is a very related library called libeio that does asynchronous I/O, which can be used independently or together with libev, so you can mix and match).
So in short, libev tries to do one thing only (POSIX event library), and this in the most efficient...
How to pull a random record using Django's ORM?
...anager):
def random(self):
count = self.aggregate(count=Count('id'))['count']
random_index = randint(0, count - 1)
return self.all()[random_index]
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Update multiple rows in same query using PostgreSQL
... as c(column_b, column_a, column_c)
where c.column_b = t.column_b;
sql fiddle demo
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std::vector versus std::array in C++
...ulate a dynamic array1, stored in the heap, that grows and shrinks automatically if elements are added or removed. It provides all the hooks (begin(), end(), iterators, etc) that make it work fine with the rest of the STL. It also has several useful methods that let you perform operations that on a ...
Gridview with two columns and auto resized images
I'm trying to make a gridview with two columns. I mean two photos per row side by side just like this image.
2 Answers
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SQL WHERE.. IN clause multiple columns
...o this derived table:
select * from table1 LEFT JOIN
(
Select CM_PLAN_ID, Individual_ID
From CRM_VCM_CURRENT_LEAD_STATUS
Where Lead_Key = :_Lead_Key
) table2
ON
table1.CM_PLAN_ID=table2.CM_PLAN_ID
AND table1.Individual=table2.Individual
WHERE table2.CM_PLAN_ID IS NOT NULL
...
Generating statistics from Git repository [closed]
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I'm doing a git repository statistics generator in ruby, it's called git_stats.
You can find examples generated for some repositories on project page.
Here is a list of what it can do:
General statistics
Total files (text and binary)
Total lines (added and deleted)
Total commits
Au...
Can I arrange repositories into folders on Github?
...way, when you are cloning one of the repos (which references other repos), called "parent repos", they will be cloned in their own directory, with a sub-directory per submodules.
It won't be visually apparent on your GitHub account itself (as it will still contains a large list of repos, even larger...
Can I concatenate multiple MySQL rows into one field?
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You can use GROUP_CONCAT:
SELECT person_id, GROUP_CONCAT(hobbies SEPARATOR ', ')
FROM peoples_hobbies
GROUP BY person_id;
As Ludwig stated in his comment, you can add the DISTINCT operator to avoid duplicates:
SELECT person_id, GROUP_CONCAT(DISTINCT hobbies SEPARA...
py2exe - generate single executable file
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@Pat: The call to run py2exe is "python setup.py py2exe". By automatically appending the "py2exe" on the end, it just means you don't have to type it in at the command line.
– orlade
Jul 1 '12 at ...