R >=3.5.0 is now required to use cpp11. This is in line with (and even goes beyond) the tidyverse standard of supporting the previous 5 minor releases of R. It also ensures that R_UnwindProtect() is available to avoid C++ memory leaks (#332).
cpp11::preserved.release_all() has been removed. This was intended to support expert developers on R <3.5.0 when cpp11 used a global protection list. Since cpp11 no longer uses a global protection list and requires R >=3.5.0, it is no longer needed. As far as we can tell, no package was actively using this (#332).
cpp11 now creates one protection list per compilation unit, rather than one global protection list shared across compilation units and across packages. This greatly reduces the complexity of managing the protection list state and should make it easier to make changes to the protection list structure in the future without breaking packages compiled with older versions of cpp11 (#330).
Nested calls to cpp11::unwind_protect() are no longer supported or encouraged. Previously, this was something that could be done for performance improvements, but ultimately this feature has proven to cause more problems than it is worth and is very hard to use safely. For more information, see the new vignette("FAQ") section titled “Should I call cpp11::unwind_protect() manually?” (#327).
The features and bug fixes from cpp11 0.4.4 have been added back in.
Davis Vaughan is now the maintainer.
as_doubles() and as_integers() now propagate missing values correctly (#265, #319).
Fixed a performance issue related to nested unwind_protect() calls (#298).
Minor performance improvements to the cpp11 protect code. (@kevinushey)
cpp_register() gains an argument extension= governing the file extension of the src/cpp11 file. By default it’s .cpp, but .cc is now supported as well (#292, @MichaelChirico)
Modernized the GitHub Actions workflows and updated some internal tests to better align with changes in those workflows and the latest version of R (#279).
cpp_source() errors on non-existent file (#261).
cpp_register() is quiet by default when R is non interactive (#289).
updated test to adapt to changes in R 4.2.1 (#290).
cpp11::messages() cpp11::stop() and cpp11::warning(). Set the CPP11_USE_FMT macro to use this feature in your package. (@sbearrows, #169, #208)as_double() and as_integer() methods to coerce integers to doubles and doubles to integers to doubles (@sbearrows, #46)cpp11::matrix iterators can now be used either row-wise or column-wise (the default) depending on the user’s choice (@alyst, #229)writable::r_vector default constructors now return a 0 length vector when converted to SEXP (#166)r_vector constructors now disallow implicit construction with named arguments (#237)r_vector.attr() methods now return const objects, so it is a compile time error to try to assign to them (#237)+ and += operators of r_vector::[const_]iterator to conform the iterators concept: += updates the iterator, and + returns the updated copy, while keeping the original unchanged (@alyst, #231)cpp11::sexps (#224).Call calls in cpp11.cpp file (@sbearrows, #170)cpp_register() now includes attribute_visible in the init function, so packages compiled with C_VISIBILITY will find the init function.cpp_source() on the same file more than once (@sbearrows, #202)cpp11::linking_to (@sbearrows, #193)cpp11::stop() and replaced with C++ exceptions (@sbearrows, #203)x.empty() method to check if a vector is empty (@sbearrows, #182)x.named() method to check if a vector is named (@sbearrows, #186)na() free function to return the NA sentinels for R objects (@sbearrows, #179)tools::package_native_routine_registration_skeleton() (@sbearrows, #171)cpp11::unwind_protect() and cpp11::safe (#154)cpp_source() now gets an argument dir to allow customized temporary directory to store generated source files. It makes it easier to debug C++ source files in non-package project via source mapping. (@renkun-ken, #156)cpp_register() now uses symbols exclusively in the .Call() interface. This allows it to be more robust in interactive use with the pkgload package.cpp_source() gains a cxx_std argument to control which C++ standard is used. This allows you to use code from C++14 and later standards with cpp_source(). (#100)cxx_std chunk option to control the C++ standard used.cpp_source() now has much more informative error messages when compilation fails (#125, #139)cpp_source() now uses a unique name for the DLL, so works when run multiple times on the same source file on Windows (#143)writable::list_of<T> now supports modification of vectors as intended (#131).tools::package_native_routine_registration_skeleton() are no longer swallowed (#134)cpp_source() can now accept a source file called cpp11.cpp (#133)named_arg now explicitly protect their values, avoiding protection issues when using large inputs. tidyverse/readr#1145r_string(std::string) now uses Rf_mkCharLenCE() instead of Rf_mkChar(), which avoids the performance cost of checking the string length.r_vector::const_iterator::operator* is now a const method (#113, @bkietz, @xhochy)r_bool added as an adapter between bool and Rboolean values (#57, @bkietz)
data_frame() objects now have the number of rows correctly set as real length, not the reserved length (#91)
Fixed potential memory leak in cpp11::writable classes.
Ensures backwards compatibility with code generation from cpp11 0.1.0 (#88)
push_back() now works more consistently with named arguments (#86)
cpp11 is now able to compile on gcc 4.8.5 (#69, @bkietz)
cpp_source(), cpp_function() and cpp_eval() now support [[cpp11::linking_to()]] syntax to link to third party packages with C++ headers. (#48)
as_cpp<E>() now works with enumeration types (#52, @bkietz)
as_cpp<int>() and as_cpp<double>() now implicitly coerce between all 3 types of single NA values (#53).
list::const_iterator::operator*() added so iterators could be used on list objects (#60, @romainfrancois)
safe[] can now work with functions that return any type (#70, @bkietz)
The END_CPP macro now includes a catch(...) block to catch all C++ exceptions that do not inherit from std::exception (#47).
Improve consistency of inserting NA values in r_string objects (#45)
Added a NEWS.md file to track changes to the package.