lubeck 0.0.0-prealpha.5-abandoned

Functional programming framework written in cutting edge rust
Documentation 
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use crate::traits::Functor;

use super::def::Cont;

impl<'a, R, A> Functor<'a, A> for Cont<'a, R, A>
where
    R: 'a,
    A: 'a,
{
    fn fmap<F, B>(self, f: F) -> Self::Type<B>
    where
        F: Fn(A) -> B + 'a,
        B: 'a,
    {
        // (B -> R) -> R
        let brr = move |br: Box<dyn FnOnce(B) -> R + 'a>| -> R {
            // A -> R
            let ar = Box::new(move |a: A| -> R {
                // A -> B
                let b = f(a);
                // R
                br(b)
            });
            // (A -> R) -> R
            let arr = self.run_cont;
            // R
            arr(ar)
        };
        Self::Type::<B> {
            run_cont: Box::new(brr),
        }
    }
}