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What is the fastest/most efficient way to find the highest set bit (msb) in an integer in C?

... array. NOTE: When using 64-bit values, be extremely cautious about using extra-clever algorithms; many of them only work correctly for 32-bit values. share | improve this answer | ...
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When to use inline function and when not to use it?

...e is suitable for short functions whose body doesn't necessitate including extra dependencies over what just a declaration would need. Every time the defintion is encountered it must be parsed and code for its body may be generated so it implies some compiler overhead over a function defined only on...
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How do I change the background color of a plot made with ggplot2

...m theme, based on theme_gray but with some of your changes and a few added extras including control of gridline colour/size (more options available to play with at ggplot2.org): theme_jack <- function (base_size = 12, base_family = "") { theme_gray(base_size = base_size, base_family = base_f...
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Is there a better way to express nested namespaces in C++ within the header

...vision isn't any longer than company_division) and don't have to define an extra namespace alias first to use it. – Kaiserludi Aug 16 '18 at 14:35 ...
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What is the Difference Between Mercurial and Git?

...heuristic like in Git, there is nothing in the model that precludes adding extra information to a snapshot, e.g., rename information. We do that in Mercurial. – Martin Geisler Jan 26 '11 at 9:05 ...
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Change the name of the :id parameter in Routing resources for Rails

...asily change the name for routes created in this way by just passing in an extra option. Details I assume you've already somehow gotten the application working the way you want in the past year, but I will go into a way to get the effect you describe in Rails 3 in routes.rb. It will just involve a...
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Is the != check thread safe?

...It is not sufficient. In fact, in the absence of synchronization (and the extra "happens before" relationships that imposes), the optimization is valid, – Stephen C Aug 28 '13 at 9:49 ...
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What's the difference between a proc and a lambda in Ruby?

...ns nil proc.call(1,2,3) # prints out 1 and forgets about the extra arguments 2. Lambdas and procs treat the ‘return’ keyword differently ‘return’ inside of a lambda triggers the code right outside of the lambda code def lambda_test lam = lambda { return } lam.call put...
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Is it possible to rotate a drawable in the xml description?

...follows: Note: Vector drawables are significantly smaller than images, so extra, explicit definitions don't incur much overhead, and makes for clear, explicit code (although I've read that hand modifying vector assets should be avoided, I'd rather deal with the overhead of updating a couple of file...
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What's the longest possible worldwide phone number I should consider in SQL varchar(length) for phon

... as the limit ... without formatting. Adding formatting may add roughly an extra character for every digit. So as a final thought it may not be a good idea to limit the phone number in the database in any way and leave shorter limits to the UX designers. ...