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PostgreSQL query to return results as a comma separated list
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Kaleem Ullah
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answered Aug 10 '12 at 15:09
sorinsorin
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Check if two linked lists merge. If so, where?
...anged list (i.e. the former beginning of the other list), he will make a+b+1 iterations total. Let's call it z+1.
The pointer that reached the merge-point first, will keep iterating, until reaches the end of the list. The number of iterations it made should be calculated and is equal to x.
Then,...
How to change border color of textarea on :focus
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.input:focus {
outline: none !important;
border:1px solid red;
box-shadow: 0 0 10px #719ECE;
}
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MySQL vs MongoDB 1000 reads
...nary json document)
So a b-tree lookup, and a binary page read. Log(n) + 1 IOs. If the indexes can reside entirely in memory, then 1 IO.
In MySQL with 20 tables, you have to perform:
One index lookup on the root table (again, assuming the entity is fetched by id)
With a clustered index, we can ...
Undo a particular commit in Git that's been pushed to remote repos
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Identify the hash of the commit, using git log, then use git revert <commit> to create ...
Include constant in string without concatenating
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How do I enable C++11 in gcc?
I use gcc 4.8.1 from http://hpc.sourceforge.net on Mac OSX Mountain Lion. I am trying to compile a C++ program which uses the to_string function in <string> . I need to use the flag -std=c++11 every time:
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How can I recall the argument of the previous bash command?
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answered Jul 30 '10 at 12:17
codaddictcodaddict
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Is there something like Annotation Inheritance in java?
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edited Oct 29 '19 at 18:24
JuanMoreno
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answered Oct ...