README.md
1# Any
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3This is a implementation of [N4562](http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4562.html) std::experimental::any (merged into C++17) for C++11 compilers.
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5It contains a small object optimization for objects with a size of up to 2 words (such as `int`, `float` and `std::shared_ptr`). Storing those objects in the container will not trigger a dynamic allocation.
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7For a easy to understand documentation, see [cppreference](http://en.cppreference.com/w/cpp/utility/any), except our namespace is `linb`.
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9## Defines
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11You may additionally define the following preprocessor symbols (making the implementation non-standard):
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13 + `ANY_IMPL_ANY_CAST_MOVEABLE`: This implements a fix proposed in [LWG Defect 2509](https://cplusplus.github.io/LWG/lwg-active.html#2509). This will cause the expressions `T x = any_cast<T>(any(T()))` and `T x = any_cast<T&&>(any(T()))`to perform a move into `x` instead of a copy.
14 + `ANY_IMPL_FAST_TYPE_INFO_COMPARE`: When checking if two `typeid` are the same, performs just a pointer comparision instead of the actual `type_info::operator==` comparision. Be aware this isn't recommended unless you know what you're doing.
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