| Copyright | Copyright (c) 2006 Robert Dockins |
|---|---|
| License | MIT; see COPYRIGHT file for terms and conditions |
| Maintainer | robdockins AT fastmail DOT fm |
| Stability | stable |
| Portability | GHC, Hugs (MPTC and FD) |
| Safe Haskell | Safe |
| Language | Haskell98 |
Data.Edison.Sym
Description
This module introduces a number of infix symbols which are aliases for some of the operations in the sequence and set abstractions. For several, the argument orders are reversed to more closely match usual symbolic usage.
The symbols are intended to evoke the the operations they represent. Unfortunately, ASCII is pretty limited, and Haskell 98 only allocates a few symbols to the operator lexical class. Thus, some of the operators are less evocative than one would like. A future version of Edison may introduce unicode operators, which will allow a wider range of operations to be represented symbolicly.
Unlike most of the modules in Edison, this module is intended to be
imported unqualified. However, the definition of (++) will conflict
with the Prelude definition. Either this definition or the Prelude
definition will need to be imported hiding ( (++) ). This definition
subsumes the Prelude definition, and can be safely used in place of it.
- (<|) :: Sequence seq => a -> seq a -> seq a
- (|>) :: Sequence seq => seq a -> a -> seq a
- (++) :: Sequence seq => seq a -> seq a -> seq a
- (!) :: Sequence seq => seq a -> Int -> a
- (|=) :: SetX set a => set -> set -> Bool
- (\\) :: SetX set a => set -> set -> set
- (/\) :: SetX set a => set -> set -> set
- (\/) :: SetX set a => set -> set -> set
Documentation
(<|) :: Sequence seq => a -> seq a -> seq a Source
Left (front) cons on a sequence. The new element appears on the left.
Identical to lcons.
(|>) :: Sequence seq => seq a -> a -> seq a Source
Right (rear) cons on a sequence. The new element appears on the right.
Identical to rcons with reversed arguments.
(++) :: Sequence seq => seq a -> seq a -> seq a Source
Append two sequences. Identical to append. Subsumes the Prelude
definition.
(!) :: Sequence seq => seq a -> Int -> a Source
Lookup an element in a sequence. Identical to lookup with
reversed arguments.
(\\) :: SetX set a => set -> set -> set Source
Set difference. Identical to difference.
(/\) :: SetX set a => set -> set -> set Source
Set intersection. Identical to intersection.