exprs()
or
Source Variables from a List of Expressionscheck that argument contains valid variable(s) created with exprs()
or
Source Variables from a List of Expressions
contains_vars(arg)
A TRUE
if variables were valid variable
A function argument to be checked
Developer Utility Functions:
%notin%()
,
%or%()
,
arg_name()
,
convert_dtm_to_dtc()
,
extract_vars()
,
filter_if()
,
friendly_type_of()
,
valid_time_units()
,
vars2chr()