R variable names

Which operator is an assignent operator in R?

• <<

• <-

• =-

• =+

Which symbol is the digit "zero"?

• o

• O

• 0

• x

Which case is considered to be

a good (recommended) style in the Tidyverse?

• UpperCamelCase

• lowerCamelCase

• lower.dotted.case

• lower_snake_case

• UPPER_SNAKE_CASE

Is this R variable name syntactically correct?

Does this code work?

student_names <- c("Jim", "Anne")

• Code does NOT work
• Code works but bad style
• Code works and good style

firstobjectname <- 1

• Code does NOT work
• Code works but bad style
• Code works and good style

obj_1 <- 1

• Code does NOT work
• Code works but bad style
• Code works and good style

_object <- 1

• Code does NOT work
• Code works but bad style
• Code works and good style

first.object.name <- 1

• Code does NOT work
• Code works but bad style
• Code works and good style

0name0 <- 1

• Code does NOT work
• Code works but bad style
• Code works and good style

first_object$name <- 1

• Code does NOT work
• Code works but bad style
• Code works and good style