expr_uses_func {swirl} | R Documentation |
Returns TRUE
if the e$expr
uses the function whose
name is given as the first argument.
expr_uses_func(func)
func |
name of the function expected to be used |
TRUE
or FALSE
Other AnswerTests: AnswerTests
,
any_of_exprs
,
calculates_same_value
,
expr_creates_var
,
expr_identical_to
, expr_is_a
,
func_of_newvar_equals
,
omnitest
, val_has_length
,
val_matches
, var_is_a
## Not run: # Test that the user has entered an expression using sd() # expr_uses_func('sd') ## End(Not run)