Item 54: Familiarize yourself with the standard library, including TR1(Effective C++)
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The primary standard C++ library functionality consists of the STL, iostreams, and locales. The C99 standard library is also included.
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TR1 adds support for smart pointers (e.g., tr1::shared_ptr), generalized function pointers (tr1::function), hash-based containers, regular expressions, and 10 other components.
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TR1 itself is only a specification. To take advantage of TR1, you need an implementation. One source for implementations of TR1 components is Boost.