no muiua
| -rw-r--r-- | Cargo.lock | 714 | ||||
| -rw-r--r-- | Cargo.toml | 2 | ||||
| -rw-r--r-- | src/lib.rs | 76 |
3 files changed, 28 insertions, 764 deletions
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-pub trait Last: Tuple { - type Init: Tuple; - type Last; - fn il(_: Self::Init, _: Self::Last) -> Self; -} - -macro_rules! h {( - $($Hd:tt $($Tail:tt)*)? -) => ($(h!($($Tail)*);)?$( -impl<$Hd $(, $Tail)*> Head for ($Hd, $($Tail),*) { - type Head = $Hd; - type Tail = ($($Tail, )*); - fn ht($Hd: Self::Head, ($($Tail, )*): Self::Tail) -> Self { - ($Hd, $($Tail),*) - } -})?)} -h![_13 _12 _11 _10 _9 _8 _7 _6 _5 _4 _3 _2 _1 _0]; - -muiua::i! { r#" -t ← ⍣/◇⊂₃"" @\s ⍚$"\__," ⇡+1 -impl ← ( - ⊃(t|t|t-1|∘|t-1|t|t-1) - $$ impl<_> Last for (_) { - $$ type Init = (_); - $$ type Last = \__; - $$ fn il((_): Self::Init, last: Self::Last) -> (_) { - $$ (_ last,) - $$ } - $$ } -) -/◇⊂₃ @\n ⍚impl ⇡14 -"# } - -impl<Args: Head, F: FnMut<Args> + Sized> Bind<Args> for F {} -pub struct Fn1<Args: Head, F: FnMut<Args>> { +impl<Args: Tupl, F: FnMut<Args> + Sized> Bind<Args> for F {} +pub struct Fn1<Args: Tupl, F: FnMut<Args>> { f: F, t: Args::Head, } -impl<Args: Head, F: FnMut<Args>> FnOnce<Args::Tail> for Fn1<Args, F> { +impl<Args: Tupl, F: FnMut<Args>> FnOnce<Args::Tail> for Fn1<Args, F> { type Output = F::Output; extern "rust-call" fn call_once(mut self, args: Args::Tail) -> Self::Output { - let args = Args::ht(self.t, args); + let args = Args::cons(self.t, args); self.f.call_mut(args) } } -impl<Args: Head<Head: Clone>, F: FnMut<Args>> FnMut<Args::Tail> for Fn1<Args, F> { +impl<Args: Tupl<Head: Clone>, F: FnMut<Args>> FnMut<Args::Tail> for Fn1<Args, F> { extern "rust-call" fn call_mut(&mut self, args: Args::Tail) -> Self::Output { - let args = Args::ht(self.t.clone(), args); + let args = Args::cons(self.t.clone(), args); self.f.call_mut(args) } } -pub struct Fn2<Args: Last, F: FnMut<Args>> { +pub struct Fn2<Args: Tupl, F: FnMut<Args>> { f: F, t: Args::Last, } -impl<Args: Last, F: FnMut<Args>> FnOnce<Args::Init> for Fn2<Args, F> { +impl<Args: Tupl, F: FnMut<Args>> FnOnce<Args::Init> for Fn2<Args, F> { type Output = F::Output; extern "rust-call" fn call_once(mut self, args: Args::Init) -> Self::Output { - let args = Args::il(args, self.t); + let args = Args::snoc(args, self.t); self.f.call_mut(args) } } -impl<Args: Last<Last: Clone>, F: FnMut<Args>> FnMut<Args::Init> for Fn2<Args, F> { +impl<Args: Tupl<Last: Clone>, F: FnMut<Args>> FnMut<Args::Init> for Fn2<Args, F> { extern "rust-call" fn call_mut(&mut self, args: Args::Init) -> Self::Output { - let args = Args::il(args, self.t.clone()); + let args = Args::snoc(args, self.t.clone()); self.f.call_mut(args) } } -pub trait Bind<Args: Head>: FnMut<Args> + Sized { +pub trait Bind<Args: Tupl>: FnMut<Args> + Sized { fn bind<T>(self, with: T) -> Fn1<Args, Self> where - Args: Head<Head = T>, + Args: Tupl<Head = T>, { return Fn1 { f: self, t: with }; } fn rbind<T: Clone>(self, with: T) -> Fn2<Args, Self> where - Args: Last<Last = T>, + Args: Tupl<Last = T>, { return Fn2 { f: self, t: with }; } @@ -104,3 +65,10 @@ impl<I, R, F: FnMut(I) -> R> Compose<I, R> for F { move |x| self(other(x)) } } + +#[test] +fn x() { + let x = |x: u32, y: u32, z: u32| x + y + z; + let mut x = x.bind(4).bind(5); + let z = x(4); +} |