Template for R command question

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Description

Template for R command question

Usage

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wq_command(output = "explain what the user must do here",
  correct_answer = "EXPR or VAL",
  answer_tests = "omnitest(correctExpr='EXPR', correctVal=VAL)",
  hint = "hint")

Arguments

output

Text that is displayed to the user.

correct_answer

A string that designates the correct answer, in this case an R expression or a value.

answer_tests

An internal function from swirl for testing the user's choice. See AnswerTests.

hint

A string that is printed to the console if the user answers this question incorrectly.

Examples

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## Not run: 
# While writing a new lesson by hand just use:
wq_command()

# If converting from another format to a swirl course you may want to sue the
# API:
wq_command("Assign the value 5 to the variable x.",
 "x <- 5", "omnitest(correctExpr='x <- 5')", "Just type: x <- 5")

## End(Not run)