check if a string is empty in R

  if (nchar("") == 0) {
    print("String is empty")
  }

This code checks if a string is empty in R. It starts with an if statement that checks if the number of characters in the string is equal to 0. If it is, then it prints the message “String is empty”. Otherwise, it will not do anything. This can be used to check if a string is empty or not and take the necessary action based on the result.