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Is there a library function for Root mean square error (RMSE) in python?
...lso known as MSE, RMD, or RMS. What problem does it solve?
If you understand RMSE: (Root mean squared error), MSE: (Mean Squared Error) RMD (Root mean squared deviation) and RMS: (Root Mean Squared), then asking for a library to calculate this for you is unnecessary over-engineering. All these me...
What is the difference between sigaction and signal?
I was about to add an extra signal handler to an app we have here and I noticed that the author had used sigaction() to set up the other signal handlers. I was going to use signal() . To follow convention I should use sigaction() but if I was writing from scratch, which should I choose?
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How to match, but not capture, part of a regex?
...regular expression matches only apple or banana if it’s preceded by 123- and followed by -456, or it matches the empty string if it’s preceded by 123- and followed by 456.
|Lookaround | Name | What it Does |
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Laravel requires the Mcrypt PHP extension
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The web enabled extensions and command line enabled extensions can differ. Run php -m in your terminal and check to see if mcrypt is listed. If it's not then check where the command line is loading your php.ini file from by running php --ini from your ...
Android Endless List
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One solution is to implement an OnScrollListener and make changes (like adding items, etc.) to the ListAdapter at a convenient state in its onScroll method.
The following ListActivity shows a list of integers, starting with 40, adding items when the user scrolls to the end...
Should I test private methods or only public ones? [closed]
... important enough to require its own tests, I just put it in another class and make it public there (Method Object). Then I can easily test the previously-private-but-now-public method that now lives on its own class.
share
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Securing my REST API with OAuth while still allowing authentication via third party OAuth providers
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First I'd like to emphasize the difference between authentication and authorization:
A user authenticates to your web site by supplying some credential such as a username+password. OpenID allows this to be displaced by having the user authenticate to another service, which then asserts th...
How do you run a SQL Server query from PowerShell?
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For others who need to do this with just stock .NET and PowerShell (no additional SQL tools installed) here is the function that I use:
function Invoke-SQL {
param(
[string] $dataSource = ".\SQLEXPRESS",
[string] $database = "MasterData",
[string] $...
What does “O(1) access time” mean?
...een this term "O(1) access time" used to mean "quickly" but I don't understand what it means. The other term that I see with it in the same context is "O(n) access time". Could someone please explain in a simple way what these terms mean?
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Is std::vector copying the objects with a push_back?
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Yes, std::vector<T>::push_back() creates a copy of the argument and stores it in the vector. If you want to store pointers to objects in your vector, create a std::vector<whatever*> instead of std::vector<whatever>.
However, you need to make sure that the objects referenced...