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Why does X[Y] join of data.tables not allow a full outer join, or a left join?

...bit of a philosophical question about data.table join syntax. I am finding more and more uses for data.tables, but still learning... ...
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What is the difference between a schema and a table and a database?

...logy. I would change "floor plan" to "blue prints" because the schema has more than just tables, and blue prints contain the wiring and heating and plumbing. – Paul Tomblin Nov 18 '08 at 13:49 ...
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How to generate a core dump in Linux on a segmentation fault?

... This link goes deeper and gives some more options to enable generation of core dumps in linux. The only drawback is that some commands/settings are left unexplained. – Salsa Aug 31 '11 at 19:45 ...
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Giving UIView rounded corners

...ed me an hour of fighting with an image editor and would have made my view more brittle to color / sizing changes. Thanks! – Justin Searls Feb 20 '10 at 16:43 20 ...
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parseInt vs unary plus, when to use which?

... #Please see this answer for a more complete set of cases Well, here are a few differences I know of: An empty string "" evaluates to a 0, while parseInt evaluates it to NaN. IMO, a blank string should be a NaN. +'' === 0; //true isNaN...
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What are metaclasses in Python?

... define the type of a class, not just a factory for it, so you can do much more with them. You can, for instance, define normal methods on the metaclass. These metaclass-methods are like classmethods in that they can be called on the class without an instance, but they are also not like classmethods...
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What is the easiest/best/most correct way to iterate through the characters of a string in Java?

...ngth(), that is hoist the method behind that call up a few frames, but its more efficient to do this for(int i = 0, n = s.length() ; i < n ; i++) { char c = s.charAt(i); } – Dave Cheney Oct 13 '08 at 8:04 ...
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Why use String.Format? [duplicate]

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How can I find out what FOREIGN KEY constraint references a table in SQL Server?

... You should use the more focused sys.tables rather than sys.objects – marc_s Jul 6 '13 at 10:16 ...
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AngularJS : Prevent error $digest already in progress when calling $scope.$apply()

I'm finding that I need to update my page to my scope manually more and more since building an application in angular. 28 A...