Any Expression supports basic mathematical operations like addition, subtraction, multiplication, division, power and negate.

Furthermore, any expression can be differentiated with respect to a given variable. Also expressions know how to simplify themselves.

There are different classes of expressions:

  • Literals (see Literal)

    • Number Literals (see Number)
    • Variable Literals (see Variable)
    • Vector Literals (see Vector)
    • Interval Literals (see IntervalLiteral)

  • Operators (support auto-wrapping of parameters into Literals)

    • Unary Operators (see UnaryOperator)
    • Binary Operators (see BinaryOperator)

  • Functions (see MathFunction)

    • Pre-defined Functions (see DefaultFunction)
    • Composite Functions (see CompositeFunction)
    • Custom Functions (see CustomFunction)

Pre-defined functions are Exponential, Log, Ln, nth-Root, Sqrt, Abs, Sgn, Sin, Cos and Tan.

Implemented by

Constructors

Expression()

Properties

hashCode → int

Get a hash code for this object.…

read-only, inherited
runtimeType → Type

A representation of the runtime type of the object.

read-only, inherited

Operators

operator *(Expression exp) → Expression

Multiply operator. Creates a Times expression.

operator +(Expression exp) → Expression

Add operator. Creates a Plus expression.

operator -(Expression exp) → Expression

Subtract operator. Creates a Minus expression.

operator /(Expression exp) → Expression

Divide operator. Creates a Divide expression.

operator ==(other) → bool

The equality operator.…

inherited
operator unary-() → Expression

Unary minus operator. Creates a UnaryMinus expression.

operator ^(Expression exp) → Expression

Power operator. Creates a Power expression.

Methods

derive(String toVar) → Expression

Derives this expression with respect to the given variable.

evaluate(EvaluationType type, ContextModel context) → dynamic

Evaluates this expression according to given type and context.

noSuchMethod(Invocation invocation) → dynamic

noSuchMethod is invoked when users invoke a non-existent method on an object. The name of the method and the arguments of the invocation are passed to noSuchMethod in an Invocation. If noSuchMethod returns a value, that value becomes the result of the original invocation.…

inherited
simplify() → Expression

Returns a simplified version of this expression. Subclasses should overwrite this method, if applicable.

toString() → String

Returns a string version of this expression. Subclasses should override this method. The output should be kept compatible with the Parser.