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Why did my Git repo enter a detached HEAD state?

I ended up with a detached head today, the same problem as described in: git push says everything up-to-date even though I have local changes ...
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Java 8 Lambda function that throws exception?

... reference to a method that has a String parameter and returns an int , it's: 25 Answers ...
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Define css class in django Forms

...-off presentational changes: django-widget-tweaks. Hope somebody will find it useful. share | improve this answer | follow | ...
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Auto Generate Database Diagram MySQL [closed]

...hen create a database diagram for me based on a MySQL database? Preferably it would allow me to edit the diagram afterward since none of the foreign keys are set... ...
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Why is NaN not equal to NaN? [duplicate]

... NaN (not a number) and prescribes that NaN should compare as not equal to itself. Why is that? 6 Answers ...
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Hudson or Teamcity for continuous integration? [closed]

We are a Java shop looking for a CI tool to use. Both Hudson and Teamcity seem to be free but Teamcity seems slicker and with more support. ...
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Search and replace in Vim across all the project files

I'm looking for the best way to do search-and-replace (with confirmation) across all project files in Vim. By "project files" I mean files in the current directory, some of which do not have to be open. ...
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efficient circular buffer?

I want to create an efficient circular buffer in python (with the goal of taking averages of the integer values in the buffer). ...
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Using a dictionary to count the items in a list [duplicate]

I'm new to Python and I have a simple question, say I have a list of items: 8 Answers ...
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Passing arguments to C# generic new() of templated type

I'm trying to create a new object of type T via its constructor when adding to the list. 14 Answers ...