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How do I exchange keys with values in a dictionary?

I receive a dictionary as input, and would like to to return a dictionary whose keys will be the input's values and whose value will be the corresponding input keys. Values are unique. ...
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twitter bootstrap navbar fixed top overlapping site

I am using bootstrap on my site and am having issues with the navbar fixed top. When I am just using the regular navbar, everything is fine. However, when i try to switch it to navbar fixed top, all the other content on the site shifts up like the navbar isn't there and the navbar overlaps it. here'...
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Managing relationships in Laravel, adhering to the repository pattern

...s, that's fine. You're doing fine! I do exactly what you are doing often and find it works great. I often, however, organize repositories around business logic instead of having a repo-per-table. This is useful as it's a point of view centered around how your application should solve your "busine...
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Convert Year/Month/Day to Day of Year in Python

... A very minor and arguably pedantic addition, but using date.today() rather than datetime.now() also works and emphasizes the nature of the operation a bit more. – Jeremy Dec 30 '13 at 6:57 ...
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Does python have an equivalent to Java Class.forName()?

I have the need to take a string argument and create an object of the class named in that string in Python. In Java, I would use Class.forName().newInstance() . Is there an equivalent in Python? ...
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What's the difference between `=` and `

I'm using R 2.8.1 and it is possible to use both = and <- as variable assignment operators. What's the difference between them? Which one should I use? ...
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Getting the class name from a static method in Java

...thanks to @James Van Huis): MyClass.class.getSimpleName(); // class name and no more share | improve this answer | follow | ...
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How to configure XAMPP to send mail from localhost?

...d mail from localhost. for example you can configure C:\xampp\php\php.ini and c:\xampp\sendmail\sendmail.ini for gmail to send mail. in C:\xampp\php\php.ini find extension=php_openssl.dll and remove the semicolon from the beginning of that line to make SSL working for gmail for localhost. in php....
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Is there a “do … until” in Python? [duplicate]

... BTW, this is called "loop-and-a-half". Python continues to support this construct because it's one of the easiest loop patterns to correctly write and understand. See cs.duke.edu/~ola/patterns/plopd/loops.html#loop-and-a-half – B...
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How to use Git Revert

...tion(+), 1 deletion(-) In this example the commit history has two commits and the last one is a mistake. Using git revert: $ git revert HEAD [master 1db4eeb] Revert "bad update" 1 file changed, 1 insertion(+), 1 deletion(-) There will be 3 commits in the log: $ git log --oneline 1db4eeb Revert "b...