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Breaking loop when “warnings()” appear in R

I am having an issue: I am running a loop to process multiple files. My matrices are enormous and therefore I often run out of memory if I am not careful. ...
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Mercurial .hgignore for Visual Studio 2010 projects

Not to be confused with Mercurial .hgignore for Visual Studio 2008 projects 2 Answers ...
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Escaping keyword-like column names in Postgres

If the column in Postgres' table has the name year , how should look INSERT query to set the value for that column? 3 An...
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Can I assume (bool)true == (int)1 for any C++ compiler?

Can I assume (bool)true == (int)1 for any C++ compiler ? 4 Answers 4 ...
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Using headers with the Python requests library's get method

So I recently stumbled upon this great library for handling HTTP requests in Python; found here http://docs.python-requests.org/en/latest/index.html . ...
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How to ignore whitespace in a regular expression subject string?

Is there a simple way to ignore the white space in a target string when searching for matches using a regular expression pattern? For example, if my search is for "cats", I would want "c ats" or "ca ts" to match. I can't strip out the whitespace beforehand because I need to find the begin and en...
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How do I escape a percentage sign in T-SQL?

This question also has the answer , but it mentions DB2 specifically. 4 Answers 4 ...
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What are the parameters sent to .fail in jQuery?

I can’t find the documentation on what the names of the three parameters are when $.ajax fails. 2 Answers ...
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How can I determine whether a Java class is abstract by reflection

I am interating through classes in a Jar file and wish to find those which are not abstract. I can solve this by instantiating the classes and trapping InstantiationException but that has a performance hit as some classes have heavy startup. I can't find anything obviously like isAbstract() in the C...
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How do I remove the border around a focused contenteditable pre?

When I set a pre element to contenteditable and put focus in it for editing, it receives a dotted border around it that doesn't look very nice. The border isn't there when focus is somewhere else. How do I remove that border? ...