C++ Archives - Page 2 of 68

C++, Programming

IT Nursery

How to “return an object” in C++?

I know the title sounds familiar as there are many similar questions, but I’m asking for a different aspect of the problem (I ...

June 3, 2022
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C++, Programming

IT Nursery

Internal typedefs in C++ – good style or bad style?

Something I have found myself doing often lately is declaring typedefs relevant to a particular class inside that class, i.e. class Lorem { ...

June 3, 2022
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C++, Programming

IT Nursery

Why can lambdas be better optimized by the compiler than plain functions?

In his book The C++ Standard Library (Second Edition) Nicolai Josuttis states that lambdas can be better optimized by the compiler than plain ...

June 3, 2022
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C++, Programming

IT Nursery

What are some uses of decltype(auto)?

In c++14 the decltype(auto) idiom is introduced. Typically its use is to allow auto declarations to use the decltype rules on the given ...

June 3, 2022
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C++, Programming

IT Nursery

How do C++ class members get initialized if I don’t do it explicitly?

Suppose I have a class with private memebers ptr, name, pname, rname, crname and age. What happens if I don’t initialize them myself? ...

June 3, 2022
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C++, Programming

IT Nursery

Are inline virtual functions really a non-sense?

I got this question when I received a code review comment saying virtual functions need not be inline. I thought inline virtual functions ...

June 3, 2022
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C++, Programming

IT Nursery

Move capture in lambda

How do I capture by move (also known as rvalue reference) in a C++11 lambda? I am trying to write something like this: ...

June 3, 2022
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C++, Programming

IT Nursery

‘typeid’ versus ‘typeof’ in C++

I am wondering what the difference is between typeid and typeof in C++. Here’s what I know: typeid is mentioned in the documentation ...

June 3, 2022
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C++, Programming

IT Nursery

Why is a boolean 1 byte and not 1 bit of size?

In C++, Why is a boolean 1 byte and not 1 bit of size? Why aren’t there types like a 4-bit or 2-bit ...

June 3, 2022
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C++, Programming

IT Nursery

pinpointing “conditional jump or move depends on uninitialized value(s)” valgrind message

So I’ve been getting some mysterious uninitialized values message from valgrind and it’s been quite the mystery as of where the bad value ...

June 3, 2022
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