MultiVariableFunction class

A callable class built from a string representation of a multi-variable numerical function.

Two named arguments are required: fromExpression and withVariables.

Example

import "package:function_tree/function_tree.dart";

void main() {
  final expression = "x * cos(3 * y) + z",
      f = MultiVariableFunction(
        fromExpression: expression,
        withVariables: ["x", "y", "z"],
      ),
      pi = "pi".interpret(),
      x = 2.0,
      y = pi / 4,
      z = 0.5,
      result = f({"x": x, "y": y, "z": z});
  print("f($x, $y, $z) = $result");
}

Result

f(2.0, 0.7853981633974483, 0.5) = -0.9142135623730949

Inheritance

• Object
• FunctionTree
• MultiVariableFunction

Constructors

MultiVariableFunction({required String fromExpression, required List<String> withVariables})

MultiVariableFunction.fromNode({required Node node, required List<String> withVariables})

Properties

hashCode → int

The hash code for this object.

no setter, inherited

representation → String

A tree structure representation.

no setter, override

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

tex → String

A TeX expression representing the tree.

no setter, override

tree → Node

A callable tree representing the components of the function.

no setter, override

Methods

call(Map<String, num> variables) → num

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

partial(String variableName) → MultiVariableFunction

toString() → String

A string representation of this object.

override

Operators

operator ==(Object other) → bool

The equality operator.

inherited