Struct currycompose::Composition
source · pub struct Composition<G, F, XG, XF> { /* private fields */ }
Expand description
A struct representing a function composed with another.
When calling the composition as a function, the leftover arguments of the composition function come first (if curried), then the arguments of the function being composed with.
#![feature(generic_const_exprs)]
use currycompose::*;
// g ∘ f
// where
// g :: f32 -> f32
// f :: u8 -> f32
// g ∘ f :: u8 -> f32
let g = |x: f32| x*x;
let f = |x: u8| x as f32;
let gf = g.compose(f);
let x = 1;
assert_eq!(gf(x), g(f(x)));
// g ∘ f
// where
// g :: f32 -> f32 -> f32
// f :: u8 -> f32
// g ∘ f :: f32 -> u8 -> f32
let g = |x: f32, y: f32| x + y;
let f = gf;
let gf = g.compose(f);
let x = 1;
let y = 1.0;
// note here the argument x has been shifted to the end of the args in gf
assert_eq!(gf(y, x), g(f(x), y));
// g ∘ f ∘ f
// where
// g :: f32 -> f32 -> f32
// f :: u8 -> f32
// g ∘ f ∘ f :: u8 -> u8 -> f32
let gff = gf.compose(f);
let x = 1;
let y = 1;
assert_eq!(gff(x, y), g(f(x), f(y)));
Trait Implementations§
source§impl<G: Clone, F: Clone, XG: Clone, XF: Clone> Clone for Composition<G, F, XG, XF>
impl<G: Clone, F: Clone, XG: Clone, XF: Clone> Clone for Composition<G, F, XG, XF>
source§fn clone(&self) -> Composition<G, F, XG, XF>
fn clone(&self) -> Composition<G, F, XG, XF>
Returns a copy of the value. Read more
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source
. Read moresource§impl<G, F, XG, XF> Fn<<(<XG as TupleUnprepend<XG>>::Tail, XF) as TupleConcat<<XG as TupleUnprepend<XG>>::Tail, XF>>::Type> for Composition<G, F, XG, XF>where
XG: Tuple + TupleUnprepend<XG>,
XF: Tuple,
G: Fn<XG>,
F: Fn<XF, Output = Head<XG>>,
(Tail<XG>, XF): TupleConcat<Tail<XG>, XF>,
ConcatTuples<Tail<XG>, XF>: Tuple + SplitInto<Tail<XG>, XF>,
((F::Output,), Tail<XG>): TupleConcat<(F::Output,), Tail<XG>, Type = XG>,
impl<G, F, XG, XF> Fn<<(<XG as TupleUnprepend<XG>>::Tail, XF) as TupleConcat<<XG as TupleUnprepend<XG>>::Tail, XF>>::Type> for Composition<G, F, XG, XF>where XG: Tuple + TupleUnprepend<XG>, XF: Tuple, G: Fn<XG>, F: Fn<XF, Output = Head<XG>>, (Tail<XG>, XF): TupleConcat<Tail<XG>, XF>, ConcatTuples<Tail<XG>, XF>: Tuple + SplitInto<Tail<XG>, XF>, ((F::Output,), Tail<XG>): TupleConcat<(F::Output,), Tail<XG>, Type = XG>,
source§impl<G, F, XG, XF> FnMut<<(<XG as TupleUnprepend<XG>>::Tail, XF) as TupleConcat<<XG as TupleUnprepend<XG>>::Tail, XF>>::Type> for Composition<G, F, XG, XF>where
XG: Tuple + TupleUnprepend<XG>,
XF: Tuple,
G: FnMut<XG>,
F: FnMut<XF, Output = Head<XG>>,
(Tail<XG>, XF): TupleConcat<Tail<XG>, XF>,
ConcatTuples<Tail<XG>, XF>: Tuple + SplitInto<Tail<XG>, XF>,
((F::Output,), Tail<XG>): TupleConcat<(F::Output,), Tail<XG>, Type = XG>,
impl<G, F, XG, XF> FnMut<<(<XG as TupleUnprepend<XG>>::Tail, XF) as TupleConcat<<XG as TupleUnprepend<XG>>::Tail, XF>>::Type> for Composition<G, F, XG, XF>where XG: Tuple + TupleUnprepend<XG>, XF: Tuple, G: FnMut<XG>, F: FnMut<XF, Output = Head<XG>>, (Tail<XG>, XF): TupleConcat<Tail<XG>, XF>, ConcatTuples<Tail<XG>, XF>: Tuple + SplitInto<Tail<XG>, XF>, ((F::Output,), Tail<XG>): TupleConcat<(F::Output,), Tail<XG>, Type = XG>,
source§impl<G, F, XG, XF> FnOnce<<(<XG as TupleUnprepend<XG>>::Tail, XF) as TupleConcat<<XG as TupleUnprepend<XG>>::Tail, XF>>::Type> for Composition<G, F, XG, XF>where
XG: Tuple + TupleUnprepend<XG>,
XF: Tuple,
G: FnOnce<XG>,
F: FnOnce<XF, Output = Head<XG>>,
(Tail<XG>, XF): TupleConcat<Tail<XG>, XF>,
ConcatTuples<Tail<XG>, XF>: Tuple + SplitInto<Tail<XG>, XF>,
((F::Output,), Tail<XG>): TupleConcat<(F::Output,), Tail<XG>, Type = XG>,
impl<G, F, XG, XF> FnOnce<<(<XG as TupleUnprepend<XG>>::Tail, XF) as TupleConcat<<XG as TupleUnprepend<XG>>::Tail, XF>>::Type> for Composition<G, F, XG, XF>where XG: Tuple + TupleUnprepend<XG>, XF: Tuple, G: FnOnce<XG>, F: FnOnce<XF, Output = Head<XG>>, (Tail<XG>, XF): TupleConcat<Tail<XG>, XF>, ConcatTuples<Tail<XG>, XF>: Tuple + SplitInto<Tail<XG>, XF>, ((F::Output,), Tail<XG>): TupleConcat<(F::Output,), Tail<XG>, Type = XG>,
impl<G: Copy, F: Copy, XG: Copy, XF: Copy> Copy for Composition<G, F, XG, XF>
Auto Trait Implementations§
impl<G, F, XG, XF> RefUnwindSafe for Composition<G, F, XG, XF>where F: RefUnwindSafe, G: RefUnwindSafe, XF: RefUnwindSafe, XG: RefUnwindSafe,
impl<G, F, XG, XF> Send for Composition<G, F, XG, XF>where F: Send, G: Send, XF: Send, XG: Send,
impl<G, F, XG, XF> Sync for Composition<G, F, XG, XF>where F: Sync, G: Sync, XF: Sync, XG: Sync,
impl<G, F, XG, XF> Unpin for Composition<G, F, XG, XF>where F: Unpin, G: Unpin, XF: Unpin, XG: Unpin,
impl<G, F, XG, XF> UnwindSafe for Composition<G, F, XG, XF>where F: UnwindSafe, G: UnwindSafe, XF: UnwindSafe, XG: UnwindSafe,
Blanket Implementations§
source§impl<'a, F> Pattern<'a> for Fwhere
F: FnMut(char) -> bool,
impl<'a, F> Pattern<'a> for Fwhere F: FnMut(char) -> bool,
§type Searcher = CharPredicateSearcher<'a, F>
type Searcher = CharPredicateSearcher<'a, F>
🔬This is a nightly-only experimental API. (
pattern
)Associated searcher for this pattern
source§fn into_searcher(self, haystack: &'a str) -> CharPredicateSearcher<'a, F>
fn into_searcher(self, haystack: &'a str) -> CharPredicateSearcher<'a, F>
🔬This is a nightly-only experimental API. (
pattern
)Constructs the associated searcher from
self
and the haystack
to search in.source§fn is_contained_in(self, haystack: &'a str) -> bool
fn is_contained_in(self, haystack: &'a str) -> bool
🔬This is a nightly-only experimental API. (
pattern
)Checks whether the pattern matches anywhere in the haystack
source§fn is_prefix_of(self, haystack: &'a str) -> bool
fn is_prefix_of(self, haystack: &'a str) -> bool
🔬This is a nightly-only experimental API. (
pattern
)Checks whether the pattern matches at the front of the haystack
source§fn strip_prefix_of(self, haystack: &'a str) -> Option<&'a str>
fn strip_prefix_of(self, haystack: &'a str) -> Option<&'a str>
🔬This is a nightly-only experimental API. (
pattern
)Removes the pattern from the front of haystack, if it matches.
source§fn is_suffix_of(self, haystack: &'a str) -> boolwhere
CharPredicateSearcher<'a, F>: ReverseSearcher<'a>,
fn is_suffix_of(self, haystack: &'a str) -> boolwhere CharPredicateSearcher<'a, F>: ReverseSearcher<'a>,
🔬This is a nightly-only experimental API. (
pattern
)Checks whether the pattern matches at the back of the haystack
source§fn strip_suffix_of(self, haystack: &'a str) -> Option<&'a str>where
CharPredicateSearcher<'a, F>: ReverseSearcher<'a>,
fn strip_suffix_of(self, haystack: &'a str) -> Option<&'a str>where CharPredicateSearcher<'a, F>: ReverseSearcher<'a>,
🔬This is a nightly-only experimental API. (
pattern
)Removes the pattern from the back of haystack, if it matches.