function_tree 0.1.1

A library for parsing and evaluating numerical functions built from strings.

function_tree

A library for parsing and evaluating mathematical functions built from strings.

Usage

A simple usage example:

import 'package:function_tree/function_tree.dart';
import 'dart:math' show PI;

main() {
  var f = new FunctionOfX("1.5 * sin(2 * (x - PI / 3)) + 2");
  print(f(PI));

  var ft = new FunctionTree(
    fromExpression: "1.5 * sin(2 * (x - PI / 3)^2) + y",
    withVariableNames: ["x", "y"]);

  print(ft({"x": 1, "y": 2}));
}

Features and bugs

Please file feature requests and bugs at the issue tracker.