Options.Applicative.Help.Chunk

The free monoid on a semigroup a.

Given a semigroup structure on a, return a monoid structure on Chunk a.

Note that this is not the same as liftA2.

Concatenate a list into a Chunk. listToChunk satisfies:

isEmpty . listToChunk = null
listToChunk = mconcat . fmap pure

Concatenate two Chunks with a space in between. If one is empty, this just returns the other one.

Unlike <+> for Doc, this operation has a unit element, namely the empty Chunk.

Concatenate two Chunks with a softline in between. This is exactly like <<+>>, but uses a softline instead of a space.

Concatenate Chunks vertically.

Concatenate Chunks vertically separated by empty lines.

Whether a Chunk is empty. Note that something like 'pure mempty' is not considered an empty chunk, even though the underlying Doc is empty.

Convert a String into a Chunk. This satisfies:

isEmpty . stringChunk = null
extractChunk . stringChunk = string

Convert a paragraph into a Chunk. The resulting chunk is composed by the words of the original paragraph separated by softlines, so it will be automatically word-wrapped when rendering the underlying document.

This satisfies:

isEmpty . paragraph = null . words

Part of a constrained comonad instance.

This is the counit of the adjunction between Chunk and the forgetful functor from monoids to semigroups. It satisfies:

extractChunk . pure = id
extractChunk . fmap pure = id

Display pairs of strings in a table.