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Is there a way to access the “previous row” value in a SELECT statement?
...u want to order alphabetically) then I don't know of a way to do that in standard SQL, but most SQL implementations will have extensions to do it.
Here is a way for SQL server that works if you can order rows such that each one is distinct:
select rank() OVER (ORDER BY id) as 'Rank', value into...
Python memory leaks [closed]
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I tried out most options mentioned previously but found this small and intuitive package to be the best: pympler
It's quite straight forward to trace objects that were not garbage-collected, check this small example:
install package via pip install pympler
from pympler.tracker import Summ...
Is C++ context-free or context-sensitive?
...uring-complete, since it shows a program which is syntactically correct if and only if a given integer is prime.
So I assert that C++ is neither context-free nor context-sensitive.
If you allow arbitrary symbol sequences on both sides of any production, you produce an Type-0 grammar ("unrestricted...
to remove first and last element in array
How to remove first and last element in an array?
12 Answers
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Why am I getting tree conflicts in Subversion?
I had a feature branch of my trunk and was merging changes from my trunk into my branch periodically and everything was working fine. Today I went to merge the branch back down into the trunk and any of the files that were added to my trunk after the creation of my branch were flagged as a "tree con...
Number of days between two dates in Joda-Time
...ime instances?
With ‘difference in days’ I mean if start is on Monday and end is on Tuesday I expect a return value of 1 regardless of the hour/minute/seconds of the start and end dates.
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What does T&& (double ampersand) mean in C++11?
I've been looking into some of the new features of C++11 and one I've noticed is the double ampersand in declaring variables, like T&& var .
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How to reset Django admin password?
I am using Django (version 1.3) and have forgotten both admin username and password. How to reset both?
21 Answers
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Blocks and yields in Ruby
I am trying to understand blocks and yield and how they work in Ruby.
10 Answers
10
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Add margin above top ListView item (and below last) in Android
This is a pretty fine question about the layout of items in a ListView in Android.
5 Answers
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