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Is there a library function for Root mean square error (RMSE) in python?
..._pred):
return np.sqrt(np.mean(np.square(y - y_pred)))
Where:
y is my target
y_pred is my prediction
Note that rmse(y, y_pred)==rmse(y_pred, y) due to the square function.
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How to make git-diff and git log ignore new and deleted files?
.../dev/null. It shouldn't be too difficult to write something (I'd use Perl myself) that looks for /dev/null and filters out the following lines up to the next diff. Then git diff ... | the-filter.
Renamed files are a different matter; I don't (yet) have a good answer to that.
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How to change variables value while debugging with LLDB in Xcode?
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expr myString = @"Foo"
(lldb) help expr
Evaluate a C/ObjC/C++ expression in the current
program context, using variables currently in scope. This command
takes 'raw' input (no need to quote stuff).
Syntax: e...
What is the difference between “def” and “val” to define a function
...ept of inline functions like in c++? I am coming from c++ world, so pardon my ignorance.
– animageofmine
Nov 27 '17 at 2:50
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List columns with indexes in PostgreSQL
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PostgreSQL (pg_indexes):
SELECT * FROM pg_indexes WHERE tablename = 'mytable';
MySQL (SHOW INDEX):
SHOW INDEX FROM mytable;
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Providing a default value for an Optional in Swift?
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my complier shows me that the type of unwrappedValue is still the optional type for this case in Swift 1.2: var unwrappedValue = optionalValue ? optionalValue! : defaultValue (xcode 6 beta 4). Has this changed?
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Reflecting parameter name: abuse of C# lambda expressions or syntax brilliance?
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Just wanted to throw in my opinion (I'm the author of the MvcContrib grid component).
This is definitely language abuse - no doubt about it. However, I wouldn't really consider it counter intuitive - when you look at a call to Attributes(style =>...
How can I get a list of build targets in Ant?
My codebase has a long build.properties file written by someone else. I want to see the available built targets without having to search through the file manually. Does ant have a command for this - something like ant show-targets - that will make it list all the targets in the build file?
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Java equivalent of C#'s verbatim strings with @
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Hiya and thanks. the fact that its a 'filename' in my case in kind of irrelevant. All my code is doing is taking a string (or trying to) and passing it on. I don't actually do anything with it other than pass it on to a web service. I was testing the response from a c# WCF se...
What is the main difference between Inheritance and Polymorphism?
...nted with this question in an end of module open book exam today and found myself lost. I was reading Head first Java and both definitions seemed to be exactly the same. I was just wondering what the MAIN difference was for my own piece of mind. I know there are a number of similar questions to thi...