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In Matlab, when is it optimal to use bsxfun?

My Question: I've noticed that a lot of good answers to Matlab questions on SO frequently use the function bsxfun . Why? ...
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How do I create a folder in a GitHub repository?

I want to create a folder in a GitHub repository and want to add files in that folder. How do I achieve this? 11 Answers ...
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Is there a Rake equivalent in Python?

Rake is a software build tool written in Ruby (like Ant or Make ), and so all its files are written in this language. Does something like this exist in Python? ...
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How to return dictionary keys as a list in Python?

In Python 2.7 , I could get dictionary keys , values , or items as a list: 8 Answers ...
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Fastest way to replace NAs in a large data.table

I have a large data.table , with many missing values scattered throughout its ~200k rows and 200 columns. I would like to re code those NA values to zeros as efficiently as possible. ...
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Deleting a file in VBA

Using VBA, how can I: 8 Answers 8 ...
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How to convert std::string to LPCSTR?

How can I convert a std::string to LPCSTR ? Also, how can I convert a std::string to LPWSTR ? 9 Answers ...
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How do I edit an existing tag message in git?

We have several annotated tags in our git repository. The older tags have bogus messages that we would like to update to be in our new style. ...
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Why should I not wrap every block in “try”-“catch”?

I have always been of the belief that if a method can throw an exception then it is reckless not to protect this call with a meaningful try block. ...
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Python: Making a beep noise

I'm trying to get the program to give me a beeping noise. I'm on a windows machine. I've looked at http://docs.python.org/library/winsound.html ...