End of input

[Rob Nichols]

How do I detect that an element is the last one?

For example, if I parse the text "one two three" how can I create a rule which pulls out "three" because it is the last in the list. I've tried using "\n" for end of line, but that fails I think because there is not carriage return in "one two three".

[Clifford Heath]

On 15 Feb 2017, at 12:53 AM, Rob Nichols <r...@nicholshayes.co.uk> wrote:
> How do I detect that an element is the last one?

Using a trick: You need to say, effectively "not anything":

rule end_of_input
! .
end

> For example, if I parse the text "one two three" how can I create a rule which pulls out "three" because it is the last in the list. I've tried using "\n" for end of line, but that fails I think because there is not carriage return in "one two three".
>

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[Rob Nichols]

Thank you Clifford. That's what I needed!