vector-builder

Vector builder

https://github.com/nikita-volkov/vector-builder

Version on this page:0.3.4.1
LTS Haskell 23.19:0.3.8.6
Stackage Nightly 2025-04-24:0.3.8.6
Latest on Hackage:0.3.8.6

See all snapshots vector-builder appears in

MIT licensed and maintained by Nikita Volkov
This version can be pinned in stack with:vector-builder-0.3.4.1@sha256:8a685c56dbdccc686f3f1a24a68e8a4ffd1546b1792d1a4920865734916660e0,5524

Module documentation for 0.3.4.1

  • VectorBuilder
    • VectorBuilder.Builder
    • VectorBuilder.MVector
    • VectorBuilder.MonadPlus
    • VectorBuilder.Vector
Used by 1 package in nightly-2018-01-09(full list with versions):
foldl

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