| Copyright | © 2022–2025 Jonathan Knowles |
|---|---|
| License | Apache-2.0 |
| Safe Haskell | None |
| Language | Haskell2010 |
Data.MonoidMap.Internal.Unsafe
Contents
Description
Provides unsafe operations for the MonoidMap type.
Synopsis
- unsafeFromMap :: Map k v -> MonoidMap k v
Construction
unsafeFromMap :: Map k v -> MonoidMap k v Source #
\(O(1)\). Unsafely constructs a MonoidMap from an ordinary Map.
Constructs a MonoidMap in constant time, without imposing the burden
of a canonicalisation step to remove null values.
When applied to a given Map m, this function expects but does not
check the following pre-condition:
all(not.null) m
Not satisfying this pre-condition will result in undefined behaviour.
See fromMap for a safe version of this function.