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What does “S3 methods” mean in R?

...ed. There are quite a few disadvantages to this way of dispatching methods based upon an attribute (class) of objects (and C purists probably lie awake at night in horror of it), but for a lot of situations, it works decently. With the current version of R, newer ways have been implemented (S4 and r...
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How will I know when to create an interface?

...ble to use the same variable p unless they were all subclasses of the same base type, or they implemented the interface. – Karl Jan 14 '09 at 19:11 ...
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Is there a range class in C++11 for use with range based for loops?

...e it for whatever reason. It would've been a great complement to the range-base-for feature. – Omnifarious Aug 25 '11 at 6:18 ...
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MVC4 StyleBundle not resolving images

...e that with its own images folder, so I just specify 2 bundles, one for my base CSS and one for jQuery UI - which is maybe not uber-optimal in terms of requests, but life is short. Cheers! – Tom W Hall Jul 8 '12 at 22:41 ...
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Pure CSS to make font-size responsive based on dynamic amount of characters

... Note: This solution changes based on viewport size and not the amount of content I just found out that this is possible using VW units. They're the units associated with setting the viewport width. There are some drawbacks, such as lack of legacy browse...
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Copy constructor for a class with unique_ptr

...ove strategy works for simple types like int. If you have a unique_ptr<Base> that stores a Derived, the above will slice. – Yakk - Adam Nevraumont Apr 16 '13 at 18:35 6 ...
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Filtering a list of strings based on contents

... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers. Draft saved Draft discarded ...
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Skip List vs. Binary Search Tree

...of concurrent accesses. This is what makes skip lists special, other lock based data structures tend to croak under pressure. Lock-free skip lists are consistently faster than locking skip lists but only barely. transactional skip lists are consistently 2-3 times slower than the locking and non-loc...
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Git log to get commits only for a specific branch

...ranches names. I don't think this is possible: a branch in Git is always based on another one or at least on another commit, as explained in "git diff doesn't show enough": You need a reference point for your log to show the right commits. As mentioned in "GIT - Where did I branch from?": ...
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Ruby optional parameters

... attributes to methods. The closest you can get is to pass nil: ldap_get(base_dn, filter, nil, X) However, this will set the scope to nil, not LDAP::LDAP_SCOPE_SUBTREE. What you can do is set the default value within your method: def ldap_get(base_dn, filter, scope = nil, attrs = nil) scope ...