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PowerShell script to return versions of .NET Framework on a machine?

...swers both return the root number on my system for .NET 3.0 (where the WCF and WPF numbers, which are nested under 3.0, are higher -- I can't explain that), and fail to return anything for 4.0 ... EDIT: For .Net 4.5 and up, this changed slightly again, so there's now a nice MSDN article here expla...
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What is the difference between the | and || or operators?

I have always used || (two pipes) in OR expressions, both in C# and PHP. Occasionally I see a single pipe used: | . What is the difference between those two usages? Are there any caveats when using one over the other or are they interchangeable? ...
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How to delete the contents of a folder?

... If you're working with a very large directory, and particularly a network directory on windows, and you can control the environment in which this program runs, it might be worth using Py3.5's "os.scandir(folder)" function instead of listdir. The syntax is quite different ...
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What is the difference between new/delete and malloc/free?

What is the difference between new / delete and malloc / free ? 15 Answers 15 ...
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Why should weights of Neural Networks be initialized to random numbers? [closed]

... AI literature there is a consensus that weights should be initialized to random numbers in order for the network to converge faster. ...
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Preferred method to store PHP arrays (json_encode vs serialize)

...n by all means use the fastest one. Just make sure you have a full understanding of the differences before you make a choice Unlike serialize() you need to add extra parameter to keep UTF-8 characters untouched: json_encode($array, JSON_UNESCAPED_UNICODE) (otherwise it converts UTF-8 characters ...
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Label encoding across multiple columns in scikit-learn

I'm trying to use scikit-learn's LabelEncoder to encode a pandas DataFrame of string labels. As the dataframe has many (50+) columns, I want to avoid creating a LabelEncoder object for each column; I'd rather just have one big LabelEncoder objects that works across all my columns of data. ...
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What is “Orthogonality”?

...em would be a radio, where changing the station does not change the volume and vice-versa. A non-orthogonal system would be like a helicopter where changing the speed can change the direction. In programming languages this means that when you execute an instruction, nothing but that instruction ...
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Why do people hate SQL cursors so much? [closed]

I can understand wanting to avoid having to use a cursor due to the overhead and inconvenience, but it looks like there's some serious cursor-phobia-mania going on where people are going to great lengths to avoid having to use one. ...
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Warning: push.default is unset; its implicit value is changing in Git 2.0

I've been using Git for a while now and have recently downloaded an update only to find this warning message come up when I try to push . ...