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| author | sheaf <sam.derbyshire@gmail.com> | 2021-11-24 14:21:49 +0100 |
|---|---|---|
| committer | Marge Bot <ben+marge-bot@smart-cactus.org> | 2021-11-25 01:07:04 -0500 |
| commit | d530c46c89acd85a5cb0d1d1dc87fd1960f654b0 (patch) | |
| tree | 0346e5024bea7a2f5b6d5d61672ff9213c2f2069 /libraries | |
| parent | c18a51f035622d53bf96b950ec0129b210ab758d (diff) | |
| download | haskell-d530c46c89acd85a5cb0d1d1dc87fd1960f654b0.tar.gz | |
Add Data.Bits changes to base 4.16 changelog
Several additions since 4.15 had not been recorded in the changelog:
- newtypes And, Ior, Xor and Iff,
- oneBits
- symbolic synonyms `.^.`, `.>>.`, `!>>.`, `.<<.` and `!<<.`.
Fixes #20608.
Diffstat (limited to 'libraries')
| -rw-r--r-- | libraries/base/changelog.md | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/libraries/base/changelog.md b/libraries/base/changelog.md index d75c8b9dbf..e1a21989ff 100644 --- a/libraries/base/changelog.md +++ b/libraries/base/changelog.md @@ -19,6 +19,14 @@ * `returnA` is defined as `Control.Category.id` instead of `arr id`. + * Added symbolic synonyms for `xor` and shift operators to `Data.Bits`: + + - `.^.` (`xor`), + - `.>>.` and `!>>.` (`shiftR` and `unsafeShiftR`), + - `.<<.` and `!<<.` (`shiftL` and `unsafeShiftL`). + + These new operators have the same fixity as the originals. + ## 4.16.0.0 *Nov 2021* * The unary tuple type, `Solo`, is now exported by `Data.Tuple`. @@ -81,6 +89,14 @@ * Comparison constraints in `Data.Type.Ord` (e.g. `<=`) now use the new `GHC.TypeError.Assert` type family instead of type equality with `~`. + * Additions to `Data.Bits`: + + - Newtypes `And`, `Ior`, `Xor` and `Iff` which wrap their argument, + and whose `Semigroup` instances are defined using `(.&.)`, `(.|.)`, `xor` + and ```\x y -> complement (x `xor` y)```, respectively. + + - `oneBits :: FiniteBits a => a`, `oneBits = complement zeroBits`. + ## 4.15.0.0 *TBA* * `openFile` now calls the `open` system call with an `interruptible` FFI |