File: MVector.hs

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haskell-vector-builder 0.3.8.6-1
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-- |
-- Extensions to the standard mutable Vector API.
module VectorBuilder.MVector where

import Data.Vector.Generic.Mutable
import qualified VectorBuilder.Core.Builder as A
import qualified VectorBuilder.Core.Update as C
import VectorBuilder.Prelude

-- |
-- Construct a mutable vector from a builder.
--
-- Supports all kinds of vectors: boxed, unboxed, primitive, storable.
{-# INLINEABLE build #-}
build :: (MVector vector element) => A.Builder element -> ST s (vector s element)
build (A.Builder size (C.Update update)) =
  do
    vector <- unsafeNew size
    update vector 0
    return vector