Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

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Revision History

Changes in 1.79.0
Changes in 1.78.0
Changes in 1.77.0
Changes in 1.76.0
Changes in 1.74.0
Changes in 1.71.0
Changes in 1.69.0
Changes in 1.67.0
Changes in 1.65.0
  • Added boost::allocator_traits, an implementation of std::allocator_traits.
  • Made boost::pointer_traits SFINAE friendly.
  • boost/iterator.hpp is deprecated and will be removed in a future release. The header defines boost::iterator template, which is equivalent to std::iterator in <iterator> header. However, since std::iterator is itself deprecated in C++17, users are advised to remove boost::iterator or std::iterator use from their code.
  • Added boost::core::verbose_terminate_handler, a utility function intended to be passed to std::set_terminate that prints information about the uncaught exception to stderr.
  • Added a generic implementation to boost/core/cmath.hpp, enabled when BOOST_CORE_USE_GENERIC_CMATH is defined or when the platform does not provide the necessary facilities in <cmath>.
  • Added boost::core::type_name, a utility function that returns the name of a type as a string.
  • Added boost::span, a C++11 implementation of C++20's std::span.
  • boost/core/uncaught_exceptions.hpp has been modified for compatibility with Mac OS 10.4 and older.
  • Added implicit conversion between compatible reference wrappers.
  • Added boost/core/cmath.hpp, a portable implementation of the floating point classification functions from <cmath>.
  • Added boost/core/bit.hpp, a portable implementation of the C++20 standard header <bit>.
  • Fixed BOOST_TEST_EQ, BOOST_TEST_NE for character types under C++20.
  • Revised allocator access utilities (now support VS2013, and no workarounds use allocator_traits.)
  • Implemented the allocator access utilities which provide a replacement for allocator_traits with individual traits and functions for each facility. They support the C++11 allocator model when possible and provide a fallback for C++98 compatibility.
  • Added BOOST_TEST_WITH to Lightweight Test.
  • Added functions alloc_construct, alloc_construct_n, alloc_destroy, and alloc_destroy_n in <boost/core/alloc_construct.hpp> for allocator aware and exception safe construction and destruction of objects and arrays.
  • Added constexpr functions first_scalar in <boost/core/first_scalar.hpp> for obtaining a pointer to the first scalar element of an array. Given a pointer of type T* they return a pointer of type remove_all_extents_t<T>*.
  • Added class template noinit_adaptor in <boost/core/noinit_adaptor.hpp> which is an allocator adaptor that converts any allocator into one whose construct(ptr) performs default initialization via placement new, and whose destroy(ptr) invokes the value_type destructor directly.
  • Added class template default_allocator in <boost/core/default_allocator.hpp>, which can serve as a minimal default allocator that has interface similar to C++20 std::allocator, supports configurations with disabled exceptions and does not have std as an associated namespace. The allocator uses operator new and operator delete for allocation.
  • In <boost/core/uncaught_exceptions.hpp> header, added workarounds for better compatibility with QNX SDP 7.0 when libc++/libc++abi libraries are used.
  • The <boost/detail/sp_typeinfo.hpp> header is now marked as deprecated and will be removed in a future release. <boost/core/typeinfo.hpp> should be used instead.
  • Implemented boost::empty_value, for library authors to conveniently leverage the Empty Base Optimization to store objects of potentially empty types.
  • Implemented boost::quick_exit to provide the C++11 standard library facility std::quick_exit functionality.
  • Reduced the number of statics in Lightweight Test, and employ lighter abort behavior for MSVC compilers upon failure to call boost::report_errors.
  • Updated to_address and pointer_traits to reflect the design adopted for C++20 in P0653R2.
  • Implemented pointer_traits for C++03 and higher, that implements P0653r0.
  • Added BOOST_TEST_GT and BOOST_TEST_GE to Lightweight Test.

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