Trait Pipe4Ref 

pub trait Pipe4Ref {
    // Provided methods
    fn pipe4_with<'x, X: ?Sized + 'x, R: 'x, A1, A2, A3, A4>(
        &'x self,
        proj: impl FnOnce(&'x Self) -> &'x X,
        f: impl FnOnce(&'x X, A1, A2, A3, A4) -> R,
    ) -> impl FnOnce(A1, A2, A3, A4) -> R { ... }
    fn pipe4_with_mut<'x, X: ?Sized + 'x, R: 'x, A1, A2, A3, A4>(
        &'x mut self,
        proj: impl FnOnce(&'x mut Self) -> &'x mut X,
        f: impl FnOnce(&'x mut X, A1, A2, A3, A4) -> R,
    ) -> impl FnOnce(A1, A2, A3, A4) -> R { ... }
}

Pipe-style helpers for partial application of (first, A1..A4) -> R functions.

The pipe4_with* methods fix the first argument to a (possibly projected) borrow of self and return a closure that accepts the remaining 4 arguments.

Provided Methods

fn pipe4_with<'x, X: ?Sized + 'x, R: 'x, A1, A2, A3, A4>( &'x self, proj: impl FnOnce(&'x Self) -> &'x X, f: impl FnOnce(&'x X, A1, A2, A3, A4) -> R, ) -> impl FnOnce(A1, A2, A3, A4) -> R

Partially applies f by fixing its first argument to proj(&self), returning a closure that takes (A1..A4).

Semantics: self.pipe4_with(proj, f)(a1..a4) == f(proj(&self), a1..a4).

fn pipe4_with_mut<'x, X: ?Sized + 'x, R: 'x, A1, A2, A3, A4>( &'x mut self, proj: impl FnOnce(&'x mut Self) -> &'x mut X, f: impl FnOnce(&'x mut X, A1, A2, A3, A4) -> R, ) -> impl FnOnce(A1, A2, A3, A4) -> R

Partially applies f by fixing its first argument to proj(&mut self), returning a closure that takes (A1..A4).

Semantics: self.pipe4_with_mut(proj, f)(a1..a4) == f(proj(&mut self), a1..a4).

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl<T: ?Sized> Pipe4Ref for T