Defines new notions of prototype and size that are used to provide tools for consistent and well-founded type-coercion and size-recycling, and are in turn connected to ideas of type- and size-stability useful for analysing function interfaces.
copied from cf-staging / r-vctrs
conda install conda-forge::r-vctrsconda install conda-forge/label/cf201901::r-vctrsconda install conda-forge/label/cf202003::r-vctrsconda install conda-forge/label/gcc7::r-vctrs