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What are the “standard unambiguous date” formats for string-to-date conversion in R?

... This is documented behavior. From ?as.Date: format: A character string. If not specified, it will try '"%Y-%m-%d"' then '"%Y/%m/%d"' on the first non-'NA' element, and give an error if neither work...
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Where to find Java JDK Source Code? [closed]

...ith all the official source code in it. I just had to tell Eclipse where this file is and I could see the code. But now I don't have the file anymore... ...
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Alternative to itoa() for converting integer to string C++? [duplicate]

...o itoa() for converting an integer to a string because when I run it in visual Studio I get warnings, and when I try to build my program under Linux, I get a compilation error. ...
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String concatenation in Ruby

... You can do that in several ways: As you shown with << but that is not the usual way With string interpolation source = "#{ROOT_DIR}/#{project}/App.config" with + source = "#{ROOT_DIR}/" + project + "/App.config" The second method seems to be more efficient in term of memory/speed f...
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Difference between abstract class and interface in Python

What is the difference between abstract class and interface in Python? 8 Answers 8 ...
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Compare if BigDecimal is greater than zero

How can I compare if BigDecimal value is greater than zero? 6 Answers 6 ...
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What is Ember RunLoop and how does it work?

... Update 10/9/2013: Check out this interactive visualization of the run loop: https://machty.s3.amazonaws.com/ember-run-loop-visual/index.html Update 5/9/2013: all the basic concepts below are still up to date, but as of this commit, the Ember Run Loop imp...
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Best practices for storing postal addresses in a database (RDBMS)?

... can be made and lots of pros and cons to each to be evaluated -- surely this has been done time and time again? Maybe someone has at least written done some lessons learned somewhere? ...
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How to define an enumerated type (enum) in C?

I'm not sure what is the proper syntax for using C enums. I have the following code: 13 Answers ...
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MSBuild doesn't copy references (DLL files) if using project dependencies in solution

I have four projects in my Visual Studio solution (everyone targeting .NET 3.5) - for my problem only these two are important: ...