val_matches: Test that the user's expression matches a regular expression.

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

Description

Returns TRUE if as.character(e$val) matches the regular expression given as the first argument.

Usage

val_matches(regular_expression)

Arguments

regular_expression

a regular expression which user value should match

Value

TRUE or FALSE

See Also

Other AnswerTests: AnswerTests, any_of_exprs, calculates_same_value, expr_creates_var, expr_identical_to, expr_is_a, expr_uses_func, func_of_newvar_equals, omnitest, val_has_length, var_is_a

Examples

## Not run: 
  # Test that a user has entered a value matching
  # '[Cc]ollege [Ss]tudents' or has selected it 
  # in a multiple choice question.
  #
  val_matches('[Cc]ollege [Ss]tudents')

## End(Not run)

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