spars

Spars is a lightweight parsing package that uses sets to store parse results to avoid duplicates.

The name is a contraction of set parse and a pun on the word sparse.

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Spars explicitly does not implement instances of Monad, Applicative and other classes. This is because using sets requires that all functions need the result type of the parser to be orderable.

Because there are no typeclass instances, the Parser type is not a newtype construction, but just a type synonym.

Note: This means that you cannot use do-notation with Spars.

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Spars has a dependency on containers in order to use maps and sets from that package.

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Some of the functions in this package have been written with the help of friendly strangers online.