Description Usage Arguments Examples
Zero-or-one combinator
1 | zero_or_one(p)
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p |
A parser. |
1 2 3 | p11 <- zero_or_one(literal("A"))
p11("AAABC") # success: list("A", "AABC"))
p11("BBCDE") # success: list("", "BBCDE"))
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