Struct ExprBuilder

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pub struct ExprBuilder<T, E>where
    T: Clone,
    E: Expr<T>,
{ /* private fields */ }

Expand description

Expression builder for creating complex expressions with a fluent interface

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impl<'a, T: Clone> ExprBuilder<T, ArrayExpr<'a, T>>

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pub fn from_array(array: &'a Array<T>) -> Self

Start building from an array

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impl<T, E> ExprBuilder<T, E>
where T: Clone, E: Expr<T>,

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pub fn map<F: Fn(T) -> T>(self, op: F) -> ExprBuilder<T, UnaryExpr<T, E, F>>

Apply a unary operation

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pub fn zip_with<E2, F>( self, other: E2, op: F, ) -> Result<ExprBuilder<T, BinaryExpr<T, E, E2, F>>>
where E2: Expr<T>, F: Fn(T, T) -> T,

Apply a binary operation with another expression

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pub fn scalar<F: Fn(T, T) -> T>( self, scalar: T, op: F, ) -> ExprBuilder<T, ScalarExpr<T, E, F>>

Apply a scalar operation

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pub fn add_scalar( self, scalar: T, ) -> ExprBuilder<T, ScalarExpr<T, E, impl Fn(T, T) -> T>>
where T: Add<Output = T>,

Add a scalar value

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pub fn mul_scalar( self, scalar: T, ) -> ExprBuilder<T, ScalarExpr<T, E, impl Fn(T, T) -> T>>
where T: Mul<Output = T>,

Multiply by a scalar value

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pub fn eval(self) -> Array<T>

Evaluate and materialize the expression

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pub fn build(self) -> E

Get the underlying expression

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impl<E: Expr<f64>> ExprBuilder<f64, E>

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pub fn abs(self) -> ExprBuilder<f64, UnaryExpr<f64, E, impl Fn(f64) -> f64>>

Apply absolute value

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pub fn sqrt(self) -> ExprBuilder<f64, UnaryExpr<f64, E, impl Fn(f64) -> f64>>

Apply square root

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pub fn exp(self) -> ExprBuilder<f64, UnaryExpr<f64, E, impl Fn(f64) -> f64>>

Apply exponential

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pub fn ln(self) -> ExprBuilder<f64, UnaryExpr<f64, E, impl Fn(f64) -> f64>>

Apply natural logarithm

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pub fn sin(self) -> ExprBuilder<f64, UnaryExpr<f64, E, impl Fn(f64) -> f64>>

Apply sine

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pub fn cos(self) -> ExprBuilder<f64, UnaryExpr<f64, E, impl Fn(f64) -> f64>>

Apply cosine

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pub fn sum(self) -> f64

Reduce by sum

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pub fn prod(self) -> f64

Reduce by product

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pub fn max(self) -> f64

Reduce by maximum

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pub fn min(self) -> f64

Reduce by minimum

Auto Trait Implementations§

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impl<T, E> Freeze for ExprBuilder<T, E>
where E: Freeze,

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impl<T, E> RefUnwindSafe for ExprBuilder<T, E>
where E: RefUnwindSafe, T: RefUnwindSafe,

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impl<T, E> UnwindSafe for ExprBuilder<T, E>
where E: UnwindSafe, T: UnwindSafe,

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
where ST: ?Sized, DT: ?Sized,

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impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
where ST: ?Sized, DT: ?Sized,

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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