grapes-alt-grapes: '%alt%' is the infix notation for the 'alt' function.
In Ramble: Parser Combinator for R

%alt% is the infix notation for the alt function.

1	p1 %alt% p2

`p1`	the first parser
`p2`	the second parser

Returns the first parser if it suceeds otherwise the second parser

1	(item() %alt% succeed("2")) ("abcdef")

Ramble documentation built on May 29, 2017, 9:42 a.m.

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Higher-Order Functions for Parsing in R"

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