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Explicit specialization in non-namespace scope [duplicate]

Compiling this under g++ gives the following error: 5 Answers 5 ...
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How to calculate the SVG Path for an arc (of a circle)

...of a path with many components. Or maybe they did it to make sure rounding errors didn't build up along the length of a complex path. The implementation notes are also useful for the original question, since they have more mathematical pseudocode for converting between the two parameterizations (wh...
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How to make a SIMPLE C++ Makefile

... As far as I can tell, that error message only comes up if you have spaces. Make sure that you don't have any lines starting with spaces (space + tab will give that error). That's the only thing I can think of.. – Brendan Long ...
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How to use Elasticsearch with MongoDB?

...sion" : { "number" : "1.1.2", "build_hash" : "e511f7b28b77c4d99175905fac65bffbf4c80cf7", "build_timestamp" : "2014-05-22T12:27:39Z", "build_snapshot" : false, "lucene_version" : "4.7" }, "tagline" : "You Know, for Search" } Now install the Elasticsearch plugins so it can pl...
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Check status of one port on remote host [closed]

...an for listening daemons, without sending any data to them. It is an error to use this option in conjunction with the -l option – pgoetz Oct 4 '18 at 20:00 ...
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std::next_permutation Implementation Explanation

...| edited Aug 25 '14 at 17:05 rvighne 16.2k77 gold badges4242 silver badges6262 bronze badges answered Ja...
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How do you match only valid roman numerals with a regular expression?

Thinking about my other problem , i decided I can't even create a regular expression that will match roman numerals (let alone a context-free grammar that will generate them) ...
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Fast way to get image dimensions (not filesize)

...ntify -format "%h" "$0")> /dev/null And this also hides any potential error messages. Modern implementations of identify only read the header, not the whole image, so it is fast. Not sure how it compares to other methods though. ...
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Determine if Python is running inside virtualenv

...t reliable way to check for this is to check whether sys.prefix == sys.base_prefix. If they are equal, you are not in a virtual environment; if they are unequal, you are. Inside a virtual environment, sys.prefix points to the virtual environment, and sys.base_prefix is the prefix of the system Pytho...
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