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How to check if there exists a process with a given pid in Python?
Is there a way to check to see if a pid corresponds to a valid process? I'm getting a pid from a different source other than from os.getpid() and I need to check to see if a process with that pid doesn't exist on the machine.
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How can you set class attributes from variable arguments (kwargs) in python
Suppose I have a class with a constructor (or other function) that takes a variable number of arguments and then sets them as class attributes conditionally.
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How to count items in JSON object using command line?
...in the mix...
Try jq, a lightweight and flexible command-line JSON processor:
jq length /tmp/test.json
Prints the length of the array of objects.
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Require returns an empty object
...this case, book.js). It (book.js) will load and run the second module (author.js) when it (book.js) requires the other (author.js)
When the second module (author.js) is loaded and run, it (author.js) requires the first module (book.js) but it (author.js) will receive a partially filled object - howe...
How to pass parameters using ui-sref in ui-router to controller
...rams in url are expected as
/fooVal?bar=barValue
These two links will correctly pass arguments into the controller:
<a ui-sref="home({foo: 'fooVal1', bar: 'barVal1'})">
<a ui-sref="home({foo: 'fooVal2', bar: 'barVal2'})">
Also, the controller does consume $stateParams instead of $...
std::auto_ptr to std::unique_ptr
...ompilers), the new type std::unique_ptr is supposed to be a replacement for std::auto_ptr .
4 Answers
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What does `someObject.new` do in Java?
...ic inner class from outside the containing class body, as described in the Oracle docs.
Every inner class instance is associated with an instance of its containing class. When you new an inner class from within its containing class it uses the this instance of the container by default:
public cla...
What is the Linux equivalent to DOS pause?
...ntinue..." key
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user@host:~$
The -n1 specifies that it only waits for a single character. The -r puts it into raw mode, which is necessary because otherwise, if you press something like backslash, it doesn't register until you hit the next key. The -p specifies the prompt, which must be quo...
How do I redirect with JavaScript? [duplicate]
... edited Feb 17 '15 at 15:55
Dorian
17.4k66 gold badges101101 silver badges102102 bronze badges
answered Jan 20 '11 at 9:52
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Can't stop rails server
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You can use other ports like the following:
rails server -p 3001
Normally in your terminal you can try Ctrl + C to shutdown the server.
The other way to kill the Ruby on Rails default server (which is WEBrick) is:
kill -INT $(cat tmp/pids/...