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git undo all uncommitted or unsaved changes

...rying to undo all changes since my last commit. I tried git reset --hard and git reset --hard HEAD after viewing this post . I responds with head is now at 18c3773... but when I look at my local source all the files are still there. What am I missing? ...
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Does the C++ standard mandate poor performance for iostreams, or am I just dealing with a poor imple

Every time I mention slow performance of C++ standard library iostreams, I get met with a wave of disbelief. Yet I have profiler results showing large amounts of time spent in iostream library code (full compiler optimizations), and switching from iostreams to OS-specific I/O APIs and custom buffer...
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Getting number of elements in an iterator in Python

...s are in an iterator in Python, in general, without iterating through each and counting? 16 Answers ...
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Difference between .tagName and .nodeName

What is the difference between $('this')[0].nodeName and $('this')[0].tagName ? 4 Answers ...
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What exactly is Arel in Rails 3.0?

I understand that it is a replacement for ActiveRecord and that it uses objects instead of queries. 4 Answers ...
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What is the difference between an ORM and an ODM?

I am trying to figure out what the difference is between ORM and ODM, as far as I understand the concept, ORM (Object Relational Mapper) maps the relations between data, where as ODM (Object Document Mapper) deals with documents. Am I right in assuming that mySQL is an example of ORM and MongoDB is ...
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How can I return pivot table output in MySQL?

...w.artfulsoftware.com/infotree/qrytip.php?id=78 I advise reading this post and adapt this solution to your needs. Update After the link above is currently not available any longer I feel obliged to provide some additional information for all of you searching for mysql pivot answers in here. It rea...
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python plot normal distribution

Given a mean and a variance is there a simple function call which will plot a normal distribution? 8 Answers ...
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Why do all browsers' user agents start with “Mozilla/”?

... It is a long and sad story. In summary: Mozilla browser gets released, with User-Agent Mozilla/1.0 (Win3.1). It is publicly renamed to Netscape, but in its User-Agent it keeps its original name . Internet Explorer is released. It spoof...
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NPM/Bower/Composer - differences?

Can someone explain to me the difference between NPM , Bower and Composer . 1 Answer ...