[−][src]Struct arithmetic_eval::fns::If
if function that eagerly evaluates "if" / "else" terms.
Type
fn<T>(bool, T, T) -> T
Examples
let program = "x = 3; if(x == 2, -1, x + 1)"; let program = Untyped::<F32Grammar>::parse_statements(program)?; let module = Environment::new() .insert_native_fn("if", fns::If) .compile_module("if_test", &program)?; assert_eq!(module.run()?, Value::Number(4.0));
You can also use the lazy evaluation by returning a function and evaluating it afterwards:
let program = "x = 3; if(x == 2, || -1, || x + 1)()"; let program = Untyped::<F32Grammar>::parse_statements(program)?; let module = Environment::new() .insert_native_fn("if", fns::If) .compile_module("if_test", &program)?; assert_eq!(module.run()?, Value::Number(4.0));
Trait Implementations
impl Clone for If[src]
impl Copy for If[src]
impl Debug for If[src]
impl Default for If[src]
impl<T> NativeFn<T> for If[src]
pub fn evaluate<'a>(
&self,
args: Vec<SpannedValue<'a, T>>,
ctx: &mut CallContext<'_, 'a, T>
) -> EvalResult<'a, T>[src]
&self,
args: Vec<SpannedValue<'a, T>>,
ctx: &mut CallContext<'_, 'a, T>
) -> EvalResult<'a, T>
Auto Trait Implementations
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized, [src]
T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized, [src]
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized, [src]
T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T[src]
impl<T> Conv for T
impl<T> Conv for T
impl<T> FmtForward for T
pub fn fmt_binary(self) -> FmtBinary<Self> where
Self: Binary,
Self: Binary,
pub fn fmt_display(self) -> FmtDisplay<Self> where
Self: Display,
Self: Display,
pub fn fmt_lower_exp(self) -> FmtLowerExp<Self> where
Self: LowerExp,
Self: LowerExp,
pub fn fmt_lower_hex(self) -> FmtLowerHex<Self> where
Self: LowerHex,
Self: LowerHex,
pub fn fmt_octal(self) -> FmtOctal<Self> where
Self: Octal,
Self: Octal,
pub fn fmt_pointer(self) -> FmtPointer<Self> where
Self: Pointer,
Self: Pointer,
pub fn fmt_upper_exp(self) -> FmtUpperExp<Self> where
Self: UpperExp,
Self: UpperExp,
pub fn fmt_upper_hex(self) -> FmtUpperHex<Self> where
Self: UpperHex,
Self: UpperHex,
impl<T> From<T> for T[src]
impl<T, U> Into<U> for T where
U: From<T>, [src]
U: From<T>,
impl<T> Pipe for T where
T: ?Sized,
T: ?Sized,
pub fn pipe<R>(self, func: impl FnOnce(Self) -> R) -> R
pub fn pipe_ref<'a, R>(&'a self, func: impl FnOnce(&'a Self) -> R) -> R where
R: 'a,
R: 'a,
pub fn pipe_ref_mut<'a, R>(
&'a mut self,
func: impl FnOnce(&'a mut Self) -> R
) -> R where
R: 'a,
&'a mut self,
func: impl FnOnce(&'a mut Self) -> R
) -> R where
R: 'a,
pub fn pipe_borrow<'a, B, R>(&'a self, func: impl FnOnce(&'a B) -> R) -> R where
B: 'a + ?Sized,
R: 'a,
Self: Borrow<B>,
B: 'a + ?Sized,
R: 'a,
Self: Borrow<B>,
pub fn pipe_borrow_mut<'a, B, R>(
&'a mut self,
func: impl FnOnce(&'a mut B) -> R
) -> R where
B: 'a + ?Sized,
R: 'a,
Self: BorrowMut<B>,
&'a mut self,
func: impl FnOnce(&'a mut B) -> R
) -> R where
B: 'a + ?Sized,
R: 'a,
Self: BorrowMut<B>,
pub fn pipe_as_ref<'a, U, R>(&'a self, func: impl FnOnce(&'a U) -> R) -> R where
R: 'a,
Self: AsRef<U>,
U: 'a + ?Sized,
R: 'a,
Self: AsRef<U>,
U: 'a + ?Sized,
pub fn pipe_as_mut<'a, U, R>(
&'a mut self,
func: impl FnOnce(&'a mut U) -> R
) -> R where
R: 'a,
Self: AsMut<U>,
U: 'a + ?Sized,
&'a mut self,
func: impl FnOnce(&'a mut U) -> R
) -> R where
R: 'a,
Self: AsMut<U>,
U: 'a + ?Sized,
pub fn pipe_deref<'a, T, R>(&'a self, func: impl FnOnce(&'a T) -> R) -> R where
R: 'a,
Self: Deref<Target = T>,
T: 'a + ?Sized,
R: 'a,
Self: Deref<Target = T>,
T: 'a + ?Sized,
pub fn pipe_deref_mut<'a, T, R>(
&'a mut self,
func: impl FnOnce(&'a mut T) -> R
) -> R where
R: 'a,
Self: DerefMut<Target = T> + Deref,
T: 'a + ?Sized,
&'a mut self,
func: impl FnOnce(&'a mut T) -> R
) -> R where
R: 'a,
Self: DerefMut<Target = T> + Deref,
T: 'a + ?Sized,
impl<T> Pipe for T
impl<T> PipeAsRef for T
pub fn pipe_as_ref<'a, T, R>(&'a self, func: impl FnOnce(&'a T) -> R) -> R where
R: 'a,
Self: AsRef<T>,
T: 'a,
R: 'a,
Self: AsRef<T>,
T: 'a,
pub fn pipe_as_mut<'a, T, R>(
&'a mut self,
func: impl FnOnce(&'a mut T) -> R
) -> R where
R: 'a,
Self: AsMut<T>,
T: 'a,
&'a mut self,
func: impl FnOnce(&'a mut T) -> R
) -> R where
R: 'a,
Self: AsMut<T>,
T: 'a,
impl<T> PipeBorrow for T
pub fn pipe_borrow<'a, T, R>(&'a self, func: impl FnOnce(&'a T) -> R) -> R where
R: 'a,
Self: Borrow<T>,
T: 'a,
R: 'a,
Self: Borrow<T>,
T: 'a,
pub fn pipe_borrow_mut<'a, T, R>(
&'a mut self,
func: impl FnOnce(&'a mut T) -> R
) -> R where
R: 'a,
Self: BorrowMut<T>,
T: 'a,
&'a mut self,
func: impl FnOnce(&'a mut T) -> R
) -> R where
R: 'a,
Self: BorrowMut<T>,
T: 'a,
impl<T> PipeDeref for T
pub fn pipe_deref<'a, R>(
&'a self,
func: impl FnOnce(&'a Self::Target) -> R
) -> R where
R: 'a,
Self: Deref,
&'a self,
func: impl FnOnce(&'a Self::Target) -> R
) -> R where
R: 'a,
Self: Deref,
pub fn pipe_deref_mut<'a, R>(
&'a mut self,
func: impl FnOnce(&'a mut Self::Target) -> R
) -> R where
R: 'a,
Self: DerefMut,
&'a mut self,
func: impl FnOnce(&'a mut Self::Target) -> R
) -> R where
R: 'a,
Self: DerefMut,
impl<T> PipeRef for T
pub fn pipe_ref<'a, R>(&'a self, func: impl FnOnce(&'a Self) -> R) -> R where
R: 'a,
R: 'a,
pub fn pipe_mut<'a, R>(&'a mut self, func: impl FnOnce(&'a mut Self) -> R) -> R where
R: 'a,
R: 'a,
impl<T> Tap for T
pub fn tap(self, func: impl FnOnce(&Self)) -> Self
pub fn tap_mut(self, func: impl FnOnce(&mut Self)) -> Self
pub fn tap_borrow<B>(self, func: impl FnOnce(&B)) -> Self where
B: ?Sized,
Self: Borrow<B>,
B: ?Sized,
Self: Borrow<B>,
pub fn tap_borrow_mut<B>(self, func: impl FnOnce(&mut B)) -> Self where
B: ?Sized,
Self: BorrowMut<B>,
B: ?Sized,
Self: BorrowMut<B>,
pub fn tap_ref<R>(self, func: impl FnOnce(&R)) -> Self where
R: ?Sized,
Self: AsRef<R>,
R: ?Sized,
Self: AsRef<R>,
pub fn tap_ref_mut<R>(self, func: impl FnOnce(&mut R)) -> Self where
R: ?Sized,
Self: AsMut<R>,
R: ?Sized,
Self: AsMut<R>,
pub fn tap_deref<T>(self, func: impl FnOnce(&T)) -> Self where
Self: Deref<Target = T>,
T: ?Sized,
Self: Deref<Target = T>,
T: ?Sized,
pub fn tap_deref_mut<T>(self, func: impl FnOnce(&mut T)) -> Self where
Self: DerefMut<Target = T> + Deref,
T: ?Sized,
Self: DerefMut<Target = T> + Deref,
T: ?Sized,
pub fn tap_dbg(self, func: impl FnOnce(&Self)) -> Self
pub fn tap_mut_dbg(self, func: impl FnOnce(&mut Self)) -> Self
pub fn tap_borrow_dbg<B>(self, func: impl FnOnce(&B)) -> Self where
B: ?Sized,
Self: Borrow<B>,
B: ?Sized,
Self: Borrow<B>,
pub fn tap_borrow_mut_dbg<B>(self, func: impl FnOnce(&mut B)) -> Self where
B: ?Sized,
Self: BorrowMut<B>,
B: ?Sized,
Self: BorrowMut<B>,
pub fn tap_ref_dbg<R>(self, func: impl FnOnce(&R)) -> Self where
R: ?Sized,
Self: AsRef<R>,
R: ?Sized,
Self: AsRef<R>,
pub fn tap_ref_mut_dbg<R>(self, func: impl FnOnce(&mut R)) -> Self where
R: ?Sized,
Self: AsMut<R>,
R: ?Sized,
Self: AsMut<R>,
pub fn tap_deref_dbg<T>(self, func: impl FnOnce(&T)) -> Self where
Self: Deref<Target = T>,
T: ?Sized,
Self: Deref<Target = T>,
T: ?Sized,
pub fn tap_deref_mut_dbg<T>(self, func: impl FnOnce(&mut T)) -> Self where
Self: DerefMut<Target = T> + Deref,
T: ?Sized,
Self: DerefMut<Target = T> + Deref,
T: ?Sized,
impl<T> Tap for T
pub fn tap<F, R>(self, func: F) -> Self where
F: FnOnce(&Self) -> R,
F: FnOnce(&Self) -> R,
pub fn tap_dbg<F, R>(self, func: F) -> Self where
F: FnOnce(&Self) -> R,
F: FnOnce(&Self) -> R,
pub fn tap_mut<F, R>(self, func: F) -> Self where
F: FnOnce(&mut Self) -> R,
F: FnOnce(&mut Self) -> R,
pub fn tap_mut_dbg<F, R>(self, func: F) -> Self where
F: FnOnce(&mut Self) -> R,
F: FnOnce(&mut Self) -> R,
impl<T, U> TapAsRef<U> for T where
U: ?Sized,
U: ?Sized,
pub fn tap_ref<F, R>(self, func: F) -> Self where
F: FnOnce(&T) -> R,
Self: AsRef<T>,
F: FnOnce(&T) -> R,
Self: AsRef<T>,
pub fn tap_ref_dbg<F, R>(self, func: F) -> Self where
F: FnOnce(&T) -> R,
Self: AsRef<T>,
F: FnOnce(&T) -> R,
Self: AsRef<T>,
pub fn tap_ref_mut<F, R>(self, func: F) -> Self where
F: FnOnce(&mut T) -> R,
Self: AsMut<T>,
F: FnOnce(&mut T) -> R,
Self: AsMut<T>,
pub fn tap_ref_mut_dbg<F, R>(self, func: F) -> Self where
F: FnOnce(&mut T) -> R,
Self: AsMut<T>,
F: FnOnce(&mut T) -> R,
Self: AsMut<T>,
impl<T, U> TapBorrow<U> for T where
U: ?Sized,
U: ?Sized,
pub fn tap_borrow<F, R>(self, func: F) -> Self where
F: FnOnce(&T) -> R,
Self: Borrow<T>,
F: FnOnce(&T) -> R,
Self: Borrow<T>,
pub fn tap_borrow_dbg<F, R>(self, func: F) -> Self where
F: FnOnce(&T) -> R,
Self: Borrow<T>,
F: FnOnce(&T) -> R,
Self: Borrow<T>,
pub fn tap_borrow_mut<F, R>(self, func: F) -> Self where
F: FnOnce(&mut T) -> R,
Self: BorrowMut<T>,
F: FnOnce(&mut T) -> R,
Self: BorrowMut<T>,
pub fn tap_borrow_mut_dbg<F, R>(self, func: F) -> Self where
F: FnOnce(&mut T) -> R,
Self: BorrowMut<T>,
F: FnOnce(&mut T) -> R,
Self: BorrowMut<T>,
impl<T> TapDeref for T
pub fn tap_deref<F, R>(self, func: F) -> Self where
F: FnOnce(&Self::Target) -> R,
Self: Deref,
F: FnOnce(&Self::Target) -> R,
Self: Deref,
pub fn tap_deref_dbg<F, R>(self, func: F) -> Self where
F: FnOnce(&Self::Target) -> R,
Self: Deref,
F: FnOnce(&Self::Target) -> R,
Self: Deref,
pub fn tap_deref_mut<F, R>(self, func: F) -> Self where
F: FnOnce(&mut Self::Target) -> R,
Self: DerefMut,
F: FnOnce(&mut Self::Target) -> R,
Self: DerefMut,
pub fn tap_deref_mut_dbg<F, R>(self, func: F) -> Self where
F: FnOnce(&mut Self::Target) -> R,
Self: DerefMut,
F: FnOnce(&mut Self::Target) -> R,
Self: DerefMut,
impl<T> ToOwned for T where
T: Clone, [src]
T: Clone,
type Owned = T
The resulting type after obtaining ownership.
pub fn to_owned(&self) -> T[src]
pub fn clone_into(&self, target: &mut T)[src]
impl<T> TryConv for T
impl<T> TryConv for T
impl<T, U> TryFrom<U> for T where
U: Into<T>, [src]
U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>[src]
impl<T, U> TryInto<U> for T where
U: TryFrom<T>, [src]
U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>[src]
impl<V, T> VZip<V> for T where
V: MultiLane<T>,
V: MultiLane<T>,