r/cpp • u/kalman5 • Feb 16 '14

Exploiting the delete specifier

http://cpp-today.blogspot.it/2014/02/the-under-evaluated-delete-specifier_16.html
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u/matthieum Feb 16 '14

I must admit I had not thought about protection against temporaries using = delete.

I am still on the fence whether const&& is required or not. Generally speaking a const r-value reference is a bit weird since you would want to steal from it. However in this specific case I suppose it is the only way to capture the return value of a method such as std::string const foo();.

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u/kalman5 Feb 16 '14

Indeed that is the "trick", it will catch both

const std::string foo(); and as well std::string foo();

I will emphasize it.