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What is the use of making constructor private in a class?
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return *aGlobalInst;
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C. (Only applies to the upcoming C++0x standard) You have several constructors. Some of them are declared public, others private. For reducing code size, public constructors 'call' private constructors which in turn do all the work. Your public constructors ...
C++ Best way to get integer division and remainder
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@Cookie : C++03 has no concept of long long, but it's highly likely that your compiler has a long long overload of std::div as an extension.
– ildjarn
Aug 15 '11 at 20:40
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When is a C++ destructor called?
Basic Question: when does a program call a class' destructor method in C++? I have been told that it is called whenever an object goes out of scope or is subjected to a delete
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C++ equivalent of Java's toString?
... stream, i.e. cout , for an object of a custom class. Is that possible in C++? In Java you could override the toString() method for similar purpose.
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How can I merge two hashes without overwritten duplicate keys in Ruby?
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newHash = oder.reverse_merge!(user)
render json: { data: newHash, status: 200 }
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C++ template constructor
...finitely not in Johannes' words. If they sound humorless then just because C++ is humorless.
– Andreas Spindler
Sep 8 '16 at 10:12
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Is C++14 adding new keywords to C++?
The C++ Standards Committee tends to shy away from adding new keywords to the language, yet with C++11 that was not the case. Some examples:
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C++ valarray vs. vector
...rrays (value arrays) are intended to bring some of the speed of Fortran to C++. You wouldn't make a valarray of pointers so the compiler can make assumptions about the code and optimise it better. (The main reason that Fortran is so fast is that there is no pointer type so there can be no pointer al...
What is your naming convention for stored procedures? [closed]
... The link to the demo of the performance hit is from an article written in 2001. It's changed since then, here's a more thorough article (from 2012) by Aaron Bertrand: sqlperformance.com/2012/10/t-sql-queries/sp_prefix
– Michael J Swart
Apr 4 '19 at 14:23
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When do I really need to use atomic instead of bool? [duplicate]
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No type in C++ is "atomic by nature" unless it is an std::atomic*-something. That's because the standard says so.
In practice, the actual hardware instructions that are emitted to manipulate an std::atomic<bool> may (or may not) ...