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socket.shutdown vs socket.close
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Calling close and shutdown have two different effects on the underlying socket.
The first thing to point out is that the socket is a resource in the underlying OS and multiple processes can have a handle for the same underlying socket.
W...
How to stop app that node.js express 'npm start'
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npm help npm-scripts
prestop, stop, poststop: Run by the npm stop command.
Set one of the above in your package.json, and then use npm stop
npm help npm-stop
You can make this really simple if you set in app.js,
process.title = myApp;
And, then in scripts.json,
"scripts": {
"star...
Does python have a sorted list?
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The standard Python list is not sorted in any form. The standard heapq module can be used to append in O(log n) to an existing list and remove the smallest one in O(log n), but isn't a sorted list in your definition.
There are var...
How to serialize a TimeSpan to XML
I am trying to serialize a .NET TimeSpan object to XML and it is not working. A quick google has suggested that while TimeSpan is serializable, the XmlCustomFormatter does not provide methods to convert TimeSpan objects to and from XML.
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What are the complexity guarantees of the standard containers?
Apparently ;-) the standard containers provide some form of guarantees.
3 Answers
3
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What guarantees are there on the run-time complexity (Big-O) of LINQ methods?
I've recently started using LINQ quite a bit, and I haven't really seen any mention of run-time complexity for any of the LINQ methods. Obviously, there are many factors at play here, so let's restrict the discussion to the plain IEnumerable LINQ-to-Objects provider. Further, let's assume that any...
setuptools: package data folder location
...on
The alternative would be to place your data outside the Python package and then
either:
Have the location of data passed in via a configuration file,
command line arguments or
Embed the location into your Python code.
This is far less desirable if you plan to distribute your project. If y...
Cross-platform way of getting temp directory in Python
... be the tempfile module.
It has functions to get the temporary directory, and also has some shortcuts to create temporary files and directories in it, either named or unnamed.
Example:
import tempfile
print tempfile.gettempdir() # prints the current temporary directory
f = tempfile.TemporaryFil...
Finding duplicate rows in SQL Server
I have a SQL Server database of organizations, and there are many duplicate rows. I want to run a select statement to grab all of these and the amount of dupes, but also return the ids that are associated with each organization.
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Are 2^n and n*2^n in the same time complexity?
... answer this question.
The definition is that f(x) belongs to O(g(x)) if and only if the limit limsupx → ∞ (f(x)/g(x)) exists i.e. is not infinity. In short this means that there exists a constant M, such that value of f(x)/g(x) is never greater than M.
In the case of your question let f(n) ...