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Principal component analysis in Python
I'd like to use principal component analysis (PCA) for dimensionality reduction. Does numpy or scipy already have it, or do I have to roll my own using numpy.linalg.eigh ?
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Populating a razor dropdownlist from a List in MVC
I have a model:
9 Answers
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Folder is locked and I can't unlock it
When I'm trying to update or commit code from a project it's telling me that the folder is locked. When I try to "release lock" it says that there's nothing to unlock in this working space.
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Transform DateTime into simple Date in Ruby on Rails
I have a datetime column in db that I want to transform into a simple date when I show it to users.
6 Answers
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PHP Warning: POST Content-Length of 8978294 bytes exceeds the limit of 8388608 bytes in Unknown on l
I am getting this error when trying to upload an import on WordPress on my XAMPP local dev environment:
21 Answers
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How to count objects in PowerShell?
As I'm reading in the PowerShell user guide, one of the core PowerShell concepts is that commands accept and return objects instead of text. So for example, running get-alias returns me a number of System.Management.Automation.AliasInfo objects:
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C++ SFINAE examples?
I want to get into more template meta-programming. I know that SFINAE stands for "substitution failure is not an error." But can someone show me a good use for SFINAE?
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How can I check the syntax of Python script without executing it?
I used to use perl -c programfile to check the syntax of a Perl program and then exit without executing it. Is there an equivalent way to do this for a Python script?
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How to make git-diff and git log ignore new and deleted files?
Sometimes there's a couple of changed files together with some new, deleted and/or renamed files. When doing git diff or git-log I'd like to omit them, so I can better spot the modifications.
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Why is the minimalist, example Haskell quicksort not a “true” quicksort?
...quicksort has two beautiful aspects:
Divide and conquer: break the problem into two smaller problems.
Partition the elements in-place.
The short Haskell example demonstrates (1), but not (2). How (2) is done may not be obvious if you don't already know the technique!
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