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What does “abstract over” mean?

... In algebra, as in everyday concept formation, abstractions are formed by grouping things by some essential characteristics and omitting their specific other characteristics. The abstraction is unified under a single symbol or word denoting the similarities. We...
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How do you validate a URL with a regular expression in Python?

...e's the pseudo-BNF of the above regex (as a documentation): ; The generic form of a URL is: genericurl = scheme ":" schemepart ; Specific predefined schemes are defined here; new schemes ; may be registered with IANA url = httpurl | ftpurl | newsurl | nntpurl | te...
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Fastest way to get the first object from a queryset in django?

...rns no objects. These were added in Django 1.6, which was released in Nov 2013. share | improve this answer | follow | ...
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How to grep a text file which contains some binary data?

...variable – funroll Sep 28 '16 at 20:01 1 Why use this if grep --text works? This seems a lot mor...
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Using MySQL with Entity Framework [closed]

... Does this support EF4 and VS2010? I installed the connector and tried to add a new connection in VS2010 but MySQL does not show up in the list of providers – Abhijeet Patel May 13 '10 at 7:07 ...
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Is it possible to get all arguments of a function as single object inside that function?

... Thomas EdingThomas Eding 29.4k1010 gold badges5959 silver badges9898 bronze badges ...
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How do you move a file?

... answered Sep 5 '08 at 16:01 KeithKeith 127k6666 gold badges263263 silver badges379379 bronze badges ...
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What does the unary plus operator do?

...problem – Lie Ryan Jul 11 '11 at 20:01 1 Thanks, that makes it clear (sidenote: In C, I couldn't ...
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How to get the nth occurrence in a string?

... mplungjan 118k2323 gold badges142142 silver badges201201 bronze badges answered Jan 23 '13 at 13:01 Denys SéguretDenys Séguret ...
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How do you round a float to two decimal places in jruby

... TheoTheo 122k1717 gold badges130130 silver badges172172 bronze badges 79 ...