| Safe Haskell | Safe |
|---|---|
| Language | Haskell98 |
Graphics.Curves.Attribute
Description
Write-only attributes.
- data Assignment a
- = forall f b . HasAttribute f a => (f b) := b
- | forall f b . HasAttribute f a => (f b) :~ (b -> b)
- class HasAttribute f a where
- modifyAttribute :: f b -> (b -> b) -> a -> a
- setAttribute :: f b -> b -> a -> a
- with :: a -> [Assignment a] -> a
Documentation
data Assignment a Source
Representation of an attribute update for an element of type a.
Constructors
| forall f b . HasAttribute f a => (f b) := b infix 0 | Set an attribute |
| forall f b . HasAttribute f a => (f b) :~ (b -> b) infix 0 | Modify an attribute |
class HasAttribute f a where Source
The type constructor f is such that f b is the type of names of
attributes of a of type b.
Minimal complete definition
Instances
with :: a -> [Assignment a] -> a infixl 7 Source
Apply a sequence of attribute assignments to an object (applied left-to-right).