expr_uses_func: Test that a particular function has been used.

In HJ08003/socraticswirl-RStudioServer: Learn R With Interactive In-class Examples

Description

Returns TRUE if the e$expr uses the function whose name is given as the first argument.

Usage

expr_uses_func(func)

Arguments

func	name of the function expected to be used

Value

TRUE or FALSE

See Also

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

Examples

## Not run: 
# Test that the user has entered an expression using sd()
#
expr_uses_func('sd')

## End(Not run)

HJ08003/socraticswirl-RStudioServer documentation built on May 20, 2019, 11:10 a.m.