parse_env_subset: Helper function to infer target from expression and...
In listenv: Environments Behaving (Almost) as Lists

parse_env_subset

R Documentation

Helper function to infer target from expression and environment

Helper function to infer target from expression and environment

parse_env_subset(
  expr,
  envir = parent.frame(),
  substitute = TRUE,
  is_variable = TRUE
)

`expr`	An expression.
`envir`	An environment.
`substitute`	If `TRUE`, then the expression is `base::substitute()`:ed, otherwise not.
`is_variable`	(logical) If TRUE and an element name is specified, then the name is checked to be a valid variable name.

A named list with elements:

envir: An environment (defaults to argument envir)
name: A character vector. ...
op: ...
subset: A list of subsetting indices or NULL. ...
idx: An integer vector or NA_integer_. ...
exists: A logical vector of length length(idx) with TRUE and FALSE values.
code: The deparsed expression expr coerced to a single character string.