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Why is i++ not atomic?
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i++ is probably not atomic in Java because atomicity is a special requirement which is not present in the majority of the uses of i++. That requirement has a significant overhead: there is a large cost in making an increment operation ...
What is the GAC in .NET?
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Right, so basically it's a way to keep DLLs globally accessible without worrying about conflicts. No more DLL Hell. Each architecture and version gets it's own place to live.
It also gets it own way to browse it in Explorer, so if y...
What algorithms compute directions from point A to point B on a map?
...ing Dijkstra's once from source to dest, you start at each end, and expand both sides until they meet in the middle. This eliminates roughly half the work (2*pi*(r/2)^2 vs pi*r^2).
To avoid exploring the back-alleys of every city between your source and destination, you can have several layers of ma...
Why doesn't os.path.join() work in this case?
The below code will not join, when debugged the command does not store the whole path but just the last entry.
14 Answers
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Tricky Google interview question
A friend of mine is interviewing for a job. One of the interview questions got me thinking, just wanted some feedback.
21 A...
Can anonymous class implement interface?
Is it possible to have an anonymous type implement an interface?
9 Answers
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How can I print the contents of a hash in Perl?
I keep printing my hash as # of buckets / # allocated.
How do I print the contents of my hash?
11 Answers
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MySQL INNER JOIN select only one row from second table
I have a users table and a payments table, for each user, those of which have payments, may have multiple associated payments in the payments table. I would like to select all users who have payments, but only select their latest payment. I'm trying this SQL but i've never tried nested SQL sta...
Is it safe to remove selected keys from map within a range loop?
How can one remove selected keys from a map?
Is it safe to combine delete() with range, as in the code below?
4 Answers
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Which are more performant, CTE or temporary tables?
Which are more performant, CTE or Temporary Tables ?
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