What are copy elision and return value optimization?

c++c++-faqoptimizationreturn-value-optimizationcopy-elision
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What are the differences between a pointer variable and a reference variable?

c++c++-faqreferencepointers
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Why isn't sizeof for a struct equal to the sum of sizeof of each member?

c#c++c++-faqstructsizeof
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What is this weird colon-member (" : ") syntax in the constructor?

c++c++-faqsyntaxconstructorctor-initializer
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How do I use arrays in C++?

arraysc++c++-faqmultidimensional-arraypointers
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objective-cbase-tageventemitteropenssladdressing-modefile-extensiondjango-usersgpsline-segmentreactjsswipeautofillflutter-futurebuildervalidationdatediffgroup-bynosuchmethodandroid-lifecyclesvgc-strings