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All permutations of a Windows license key
I need to apply for a Windows 8 upgrade for my laptop, for which I need the Windows 7 license key on the underside of the laptop.
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Java NIO FileChannel versus FileOutputstream performance / usefulness
I am trying to figure out if there is any difference in performance (or advantages) when we use nio FileChannel versus normal FileInputStream/FileOuputStream to read and write files to filesystem. I observed that on my machine both perform at the same level, also many times the FileChannel way...
How to pull request a wiki page on GitHub?
I saw a wiki page on GitHub that isn't open for editing. Then I forked the project, edited it on "my end" and tried to do a pull request. It turns out, the wiki isn't in the project, and there isn't a way to commit changes to it.
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What does “abstract over” mean?
Often in the Scala literature, I encounter the phrase "abstract over", but I don't understand the intent. For example , Martin Odersky writes
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How to determine if a number is a prime with regex?
I found the following code example for Java on RosettaCode :
4 Answers
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Multiprocessing - Pipe vs Queue
What are the fundamental differences between queues and pipes in Python's multiprocessing package ?
2 Answers
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Is it .yaml or .yml?
According to yaml.org , the official file extension is .yaml .
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How can I profile Python code line-by-line?
I've been using cProfile to profile my code, and it's been working great. I also use gprof2dot.py to visualize the results (makes it a little clearer).
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CSS media queries: max-width OR max-height
When writing a CSS media query, is there any way you can specify multiple conditions with "OR" logic?
3 Answers
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Checking oracle sid and database name
... dual; should give you the current user
and SELECT sys_context('userenv','instance_name') FROM dual; the name of the instance
I believe you can get SID as SELECT sys_context('USERENV', 'SID') FROM DUAL;
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