packrat/lib/x86_64-w64-mingw32/3.4.3/rlang/NEWS.md

In UBC-MDS/Karl:

rlang 0.1.6

• This is a maintenance release in anticipation of a forthcoming change to R's C API (use MARK_NOT_MUTABLE() instead of SET_NAMED()).

• New function is_reference() to check whether two objects are one and the same.

rlang 0.1.4

• eval_tidy() no longer maps over lists but returns them literally. This behaviour is an overlook from past refactorings and was never documented.

rlang 0.1.2

This hotfix release makes rlang compatible with the R 3.1 branch.

rlang 0.1.1

This release includes two important fixes for tidy evaluation:

• Bare formulas are now evaluated in the correct environment in tidyeval functions.

• enquo() now works properly within compiled functions. Before this release, constants optimised by the bytecode compiler couldn't be enquoted.

New functions:

• The new_environment() constructor creates a child of the empty environment and takes an optional named list of data to populate it. Compared to env() and child_env(), it is meant to create environments as data structures rather than as part of a scope hierarchy.

• The new_language() constructor creates calls out of a callable object (a function or an expression) and a pairlist of arguments. It is useful to avoid costly internal coercions between lists and pairlists of arguments.

UI improvements:

• env_child()'s first argument is now .parent instead of parent.

• mut_ setters like mut_attrs() and environment helpers like env_bind() and env_unbind() now return their (modified) input invisibly. This follows the tidyverse convention that functions called primarily for their side effects should return their input invisibly.

• is_pairlist() now returns TRUE for NULL. We added is_node() to test for actual pairlist nodes. In other words, is_pairlist() tests for the data structure while is_node() tests for the type.

Bugfixes:

• env() and env_child() can now get arguments whose names start with .. Prior to this fix, these arguments were partial-matching on env_bind()'s .env argument.

• The internal replace_na() symbol was renamed to avoid a collision with an exported function in tidyverse. This solves an issue occurring in old versions of R prior to 3.3.2 (#133).

rlang 0.1.0

Initial release.

UBC-MDS/Karl documentation built on May 22, 2019, 1:53 p.m.