Textual error

[berkus]

Hi!

In your Parser Combinators text you have what seems to be a typo:

To accommodate this pattern, we're going to use our pair combinator to write two other combinators: left, which discards the result of the first parser and only returns the second, and its opposite number, right, which is the one we'd have wanted to use in our test above instead of pair - the one that discards that () on the left hand side of the pair and only keeps our String.

left actually discards the second result and returns the first, while right does what it says.