In R, the <- symbol is the assignment operator. This means that when you type `x <- 1`, you are assigning the value 1 to the variable `x`. You can then use the `x` variable in other expressions. For example, you could type `print(x)` to print the value of `x` to the console.
The `#` character is used to create comments in R. Anything to the right of the `#` character is ignored by the R interpreter. This is useful for adding notes to your code or for disabling parts of your code that you are not currently using.
For example, the following code:
x <- 1
# This is a comment
print(x)
will print the value of `x` to the console, but the comment will be ignored.
- The grammar of the language determines whether an expression is complete or not. For example, the expression `x <- 1` is complete, but the expression `x <-` is not.
- R does not support multi-line comments or comment blocks. This means that you can only use the `#` character to create single-line comments.
- If you want to enter a literal `#` character in your code, you need to escape it with a backslash. For example, the following code:
x <- '#'
will assign the literal `#` character to the variable `x`.
