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What is DOCTYPE?

Lastly, what is the proper DOCTYPE that I should be using? 8 Answers 8 ...
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Elegant way to check for missing packages and install them?

I seem to be sharing a lot of code with coauthors these days. Many of them are novice/intermediate R users and don't realize that they have to install packages they don't already have. ...
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Remove a prefix from a string [duplicate]

I am trying to do the following, in a clear pythonic way: 6 Answers 6 ...
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Django get the static files URL in view

I'm using reportlab pdfgen to create a PDF. In the PDF there is an image created by drawImage . For this I either need the URL to an image or the path to an image in the view. I managed to build the URL but how would I get the local path to the image? ...
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Rails raw SQL example

How can I convert this code to raw sql and use in rails? Because When I deploy this code in heroku,there is a request timeout error.I think this will be faster if I use raw sql. ...
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Core dumped, but core file is not in the current directory?

While running a C program, It says "(core dumped)" but I can't see any files under the current path. 12 Answers ...
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Disable pasting text into HTML form

Is there a way using JavaScript to disable the ability to paste text into a text field on an HTML form? 23 Answers ...
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What's the difference between session.Merge and session.SaveOrUpdate?

I notice sometimes with my parent/child objects or many-to-many relationships, I need to call either SaveOrUpdate or Merge . Usually, when I need to call SaveOrUpdate , the exception I get on calling Merge has to do with transient objects not being saved first. ...
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ssl证书申请报错:challenge = [c for c in authorization[\'challenges\']...

ssl证书申请报错:challenge = [c for c in authorization['challenges'] if c['type'] == "http-01"][0] IndexError: list index out of rangechallenge-list-index-out-of-range使用acme-tiny申请ssl证书时报错:challenge = [c for c in authorization[& 39;challenges& 39;] if c[& 39;type& 39;] == ...
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“please check gdb is codesigned - see taskgated(8)” - How to get gdb installed with homebrew code si

I'm under osx 10.8.4 and have installed gdb 7.5.1 with homebrew (motivation get a new gdb with new features such as --with-python etc... ) ...