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nelari.us | ||
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www.cppstories.com
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| | | | | With std::optional you can represent some Type or nothing. With std::variant you can wrap several variants into one entity. And C++17 gives us one more wrapper type: std::any that can hold anything in a type-safe way. The Basics So far in the Standard C++, you had not many options when it comes to holding variable types in a variable. | |
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www.cplusplus.com
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www.foonathan.net
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| | | | | Just like regular function parameters, template parameters can also have default parameters. For class templates, this behaves mostly just like default function arguments: if you pass fewer template arguments than required, default template arguments are used to fill the remaining places. However, for function templates, it gets more complicated as template parameters for functions can be deduced by the normal function arguments. This leads to some interesting side-effects. In particular, default argumen... | |
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akrzemi1.wordpress.com
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| | | The language feature in C++17 known as class template argument deduction was intended to supersede factory functions like make_pair, make_tuple, make_optional, as described in p0091r2. This goal has not been fully achieved and we may still need to stick to make_ functions. In this post we will briefly describe what class template argument deduction is,... | ||
