FunctionalExpressionGroup

A context class for Expression construction for Ring algebras.

Inheritors

Constructors

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constructor(algebra: A)

Functions

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fun <T : Comparable<T>> Group<T>.abs(value: T): T

Absolute of the comparable value

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open override fun add(left: Expression<T>, right: Expression<T>): Expression<T>

Builds an Expression of addition of two another expressions.

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open fun binaryOperation(operation: String, left: Expression<T>, right: Expression<T>): Expression<T>

Dynamically invokes a binary operation with the certain name.

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open override fun binaryOperationFunction(operation: String): (left: Expression<T>, right: Expression<T>) -> Expression<T>

Dynamically dispatches a binary operation with the certain name.

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open fun bindSymbol(value: String): Expression<T>

The same as bindSymbolOrNull but throws an error if symbol could not be bound

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fun <T> Algebra<T>.bindSymbol(symbol: Symbol): T
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open override fun bindSymbolOrNull(value: String): Expression<T>?

Builds an Expression to access a variable.

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fun <T> Algebra<T>.bindSymbolOrNull(symbol: Symbol): T?
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open override fun const(value: T): Expression<T>

Builds an Expression of constant expression that does not depend on arguments.

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Export an algebra element, so it could be accessed even after algebra scope is closed. This method must be used on algebras where data is stored externally or any local algebra state is used. By default (if not overridden), exports the object itself.

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operator fun T.minus(arg: Expression<T>): Expression<T>
operator fun Expression<T>.minus(arg: T): Expression<T>

open operator fun Expression<T>.minus(arg: Expression<T>): Expression<T>

Subtraction of two elements.

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operator fun T.plus(arg: Expression<T>): Expression<T>
operator fun Expression<T>.plus(arg: T): Expression<T>

open operator fun Expression<T>.plus(arg: Expression<T>): Expression<T>

Addition of two elements.

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fun <T> Group<T>.sum(data: Iterable<T>): T
@PerformancePitfall(message = "Potential boxing access to buffer elements")
fun <T> Group<T>.sum(data: Buffer<T>): T

Returns the sum of all elements in the iterable in this Group.

fun <T> Group<T>.sum(data: Sequence<T>): T

Returns the sum of all elements in the sequence in this Group.

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open operator override fun Expression<T>.unaryMinus(): Expression<T>

The negation of this element.

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open fun unaryOperation(operation: String, arg: Expression<T>): Expression<T>

Dynamically invokes a unary operation with the certain name.

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open override fun unaryOperationFunction(operation: String): (arg: Expression<T>) -> Expression<T>

Dynamically dispatches a unary operation with the certain name.

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open operator fun Expression<T>.unaryPlus(): Expression<T>

Returns this value.

Properties

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val algebra: A
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Bind a symbol by name inside the ExpressionAlgebra

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Provide a factory for buffers, associated with this Algebra

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open override val zero: Expression<T>

The neutral element of addition.