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What is the fastest way to compare two sets in Java?

...uld be based on on a Comparator. public class SortedSetComparitor <Foo extends Comparable<Foo>> implements Comparator<SortedSet<Foo>> { @Override public int compare( SortedSet<Foo> arg0, SortedSet<Foo> arg1 ) { Iterat...
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Private and Protected Members : C++

...edInt; public: int MyPublicInt; }; class Derived : Base { public: int foo1() { return MyPrivateInt;} // Won't compile! int foo2() { return MyProtectedInt;} // OK int foo3() { return MyPublicInt;} // OK };‌‌ class Unrelated { private: Base B; public: int foo1() { return B.MyP...
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Different ways of adding to Dictionary

...ng, string> strings = new Dictionary<string, string>(); strings["foo"] = "bar"; //strings["foo"] == "bar" strings["foo"] = string.Empty; //strings["foo"] == string.empty strings.Add("foo", "bar"); //throws ...
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RSpec: how to test if a method was called?

...do expect(subject).to receive(:bar).with("an argument I want") subject.foo end share | improve this answer | follow | ...
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PHP check whether property exists in object or class

...$ob->a = null var_dump(isset($ob->a)); // false Example 2: class Foo { public $bar = null; } $foo = new Foo(); var_dump(property_exists($foo, 'bar')); // true var_dump(isset($foo->bar)); // false share ...
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How can I suppress all output from a command using Bash?

...he terminal device rather than to standard output/error. To test, put echo foo > $(tty) in a script and run ./test.sh &> /dev/null - The output is still printed to the terminal. Of course this is not a problem if you're writing a script which uses no such commands. – ...
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setMaxResults for Spring-Data-JPA annotation?

...t; { @Query("from User u where ...") List<User> findAllUsersWhereFoo(@Param("foo") Foo foo, Pageable pageable); default List<User> findTop10UsersWhereFoo(Foo foo) { return findAllUsersWhereFoo(foo, new PageRequest(0,10)); } } ...
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What's the false operator in C# good for?

...plicitly. Comparing to SQL, imagine a table Table with 3 rows with value Foo set to true, 3 rows with value Foo set to false and 3 rows with value Foo set to null. SELECT COUNT(*) FROM Table WHERE Foo = TRUE OR Foo = FALSE 6 In order to count all rows you'd have to do the following:- SELECT CO...
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typedef struct vs struct definitions [duplicate]

...ed to define, or to refer to, a structure type. For example, this: struct foo { int n; }; creates a new type called struct foo. The name foo is a tag; it's meaningful only when it's immediately preceded by the struct keyword, because tags and other identifiers are in distinct name spaces. (Th...
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Why doesn't JUnit provide assertNotEquals methods?

Does anybody know why JUnit 4 provides assertEquals(foo,bar) but not assertNotEqual(foo,bar) methods? 11 Answers ...