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WrapC

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This commit is contained in:
AF 2023-05-30 15:02:47 +00:00
parent 6ec6ba7076
commit e23252b8cf
1 changed files with 8 additions and 9 deletions
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17
src/func/context.rs
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@ -1,21 +1,20 @@
use super::*;
pub type WrapC<'a, A, Ctx> = Wrap<'a, A, <Ctx as FunctorContext<'a>>::T>;
pub trait FunctorContext<'a>: 'a {
type T: WeakFunctor<'a>;
}
pub trait FunctorContextExt<'a>: FunctorContext<'a> {
fn fmap<A: 'a, B: 'a>(
fa: Wrap<'a, A, Self::T>,
f: impl 'a + FnOnce(A) -> B,
) -> Wrap<'a, B, Self::T>
fn fmap<A: 'a, B: 'a>(fa: WrapC<'a, A, Self>, f: impl 'a + FnOnce(A) -> B) -> WrapC<'a, B, Self>
where
Self::T: Functor<'a>,
{
<Self::T as Functor>::fmap(fa, f)
}
fn pure<A: 'a>(a: A) -> Wrap<'a, A, Self::T>
fn pure<A: 'a>(a: A) -> WrapC<'a, A, Self>
where
Self::T: Pure<'a>,
{
@ -23,16 +22,16 @@ pub trait FunctorContextExt<'a>: FunctorContext<'a> {
}
fn bind<A: 'a, B: 'a>(
fa: Wrap<'a, A, Self::T>,
f: impl 'a + FnOnce(A) -> Wrap<'a, B, Self::T>,
) -> Wrap<'a, B, Self::T>
fa: WrapC<'a, A, Self>,
f: impl 'a + FnOnce(A) -> WrapC<'a, B, Self>,
) -> WrapC<'a, B, Self>
where
Self::T: Monad<'a>,
{
<Self::T as Monad>::bind(fa, f)
}
fn fail<A: 'a, E: 'a>(e: E) -> Wrap<'a, A, Self::T>
fn fail<A: 'a, E: 'a>(e: E) -> WrapC<'a, A, Self>
where
Self::T: Fail<'a, E>,
{