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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
<maintainer type="project">
<email>haskell@gentoo.org</email>
<name>Gentoo Haskell</name>
</maintainer>
<longdescription>
An API for efficient and convenient construction of vectors.
It provides the composable `Builder` abstraction, which has instances of the `Monoid` and `Semigroup` classes.
[Usage]
First you use the `Builder` abstraction to specify the structure of the vector.
Then you execute the builder to actually produce the vector.
[Example]
The following code shows how you can efficiently concatenate different datastructures into a single immutable vector:
>
>import qualified Data.Vector as A
>import qualified VectorBuilder.Builder as B
>import qualified VectorBuilder.Vector as C
>
>
>myVector :: A.Vector a -> [a] -> a -> A.Vector a
>myVector vector list element =
> C.build builder
> where
> builder =
> B.vector vector <>
> foldMap B.singleton list <>
> B.singleton element
</longdescription>
</pkgmetadata>
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