pyrocat101 / opal Goto Github PK
View Code? Open in Web Editor NEWSelf-contained monadic parser combinators for OCaml
License: MIT License
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tmcgilchrist caiorss fxfactorial sayon ghulette ul quernd kar8nga crusso acorrenson ejmg minerva1129 mucamaca cobrooksopal's Issues
OPAM package?
Hi pyrocat! I noticed that Opal doesn't currently have a package available on OPAM. Since this seems like a pretty useful library, I think that you should create a package for it on OPAM to make installation more convenient. Do you have any interest in doing this/any reasons that you don't wanna do it? Either way, keep up the good work!
chainr should be like chainl
Hi. As of v0.1.0, the type for chainl1 is:
('a -> ('b * 'c) option) -> ('c -> (('b -> 'b -> 'b) * 'a) option) -> 'a -> ('b * 'c) option
... while the type for chainr1 is:
('a -> ('b * 'c) option) -> ('c -> (('b -> 'b -> 'c -> ('b * 'c) option) * 'a) option) -> 'a -> ('b * 'c) option
This discrepancy is fairly surprising, since the docs say these two are pretty much the same things, aside from the order of application.
To cut the story short, I think the definition of chainr1 should be changed from this:
let rec chainr1 x op =
x >>= fun a -> (op >>= fun f -> chainr1 x op >>= f a) <|> return a... into something more like this:
let rec chainr1 x op =
x >>= fun a -> (op >>= fun f -> chainr1 x op >>= fun b -> return (f a b)) <|> return aAvoid using reserved identifier of Camlp4 extensions
parser is a keyword of Camlp4 extension, and core library uses Camlp4. When using this library and core together, error will show up.
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