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Getting the count of unique values in a column in bash
...currence of the different values in a column for all the files in a folder and sort them in decreasing order of count (highest count first). How would I accomplish this in a Linux command line environment?
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What is code coverage and how do YOU measure it?
What is code coverage and how do YOU measure it?
9 Answers
9
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What would cause an algorithm to have O(log log n) complexity?
... 16
16 / 2 = 8
8 / 2 = 4
4 / 2 = 2
2 / 2 = 1
This process takes 16 steps, and it's also the case that 65,536 = 216.
But, if we take the square root at each level, we get
√65,536 = 256
√256 = 16
√16 = 4
√4 = 2
Notice that it only takes four steps to get all the way down to 2. Why is this?...
Calling JMX MBean method from a shell script
... JMX MBean method from a shell script. We expose some operations/admin commands through JMX, and we could have our admins use JConsole, or VisualVM, but some tasks are better left to automation. In that automation we'd like to be able to call a JMX MBean method on our running server, preferably from...
How do I clone a single branch in Git?
...g a shallow clone.
This makes git clone --depth 1 the easiest way to save bandwidth.
And since Git 1.9.0 (February 2014), shallow clones support data transfer (push/pull), so that option is even more useful now.
See more at "Is git clone --depth 1 (shallow clone) more useful than it makes out?".
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How often to commit changes to source control? [closed]
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Anytime I complete a "full thought" of code that compiles and runs I check-in. This usually ends up being anywhere between 15-60 minutes. Sometimes it could be longer, but I always try to checkin if I have a lot of code changes that I wouldn't want to rewrite in case of failure. I a...
Best way to create an empty map in Java
...compared to Collections.emptyMap(). From the Javadoc:
This map behaves and performs comparably to Collections.emptyMap(),
and is preferable mainly for consistency and maintainability of your
code.
2) Map that you can modify:
Maps.newHashMap()
// or:
Maps.<String, String>newHashMap(...
How to make a new List in Java
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Note that ArrayList is not the only kind of List -- and, regarding the question, HashSet is not the only kind of Set.
– slim
Feb 11 '13 at 14:25
17
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What does character set and collation mean exactly?
I can read the MySQL documentation and it's pretty clear. But, how does one decide which character set to use? On what data does collation have an effect?
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How to calculate an angle from three points? [closed]
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Only a handful of languages use a caret for 'power of', so if you don't want to call it arcos, please just type cos⁻¹. (If you're using a commercial operating system that makes it difficult to type exponents, I expect there would ...