https://github.com/mahanrahmati/libcalculator

A mathematical expression evaluator for Dart that handles arithmetic operations, parentheses, decimal numbers, and proper operator precedence with precise calculations.
https://github.com/mahanrahmati/libcalculator

Last synced: 9 days ago
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A mathematical expression evaluator for Dart that handles arithmetic operations, parentheses, decimal numbers, and proper operator precedence with precise calculations.

• Host: GitHub
• URL: https://github.com/mahanrahmati/libcalculator
• Owner: MahanRahmati
• License: bsd-3-clause
• Created: 2024-12-13T21:38:38.000Z (10 days ago)
• Default Branch: main
• Last Pushed: 2024-12-13T21:44:16.000Z (10 days ago)
• Last Synced: 2024-12-13T22:28:18.584Z (10 days ago)
• Language: Dart
• Size: 0 Bytes
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • License: LICENSE

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README

        
# LibCalculator

A mathematical expression evaluator for Dart that handles arithmetic operations with proper precedence rules.

## Features

- Evaluates mathematical expressions with support for:

  - Basic arithmetic operations (+, -, \*, /)

  - Parentheses for expression grouping

  - Decimal numbers

  - Proper operator precedence

- Clean error handling for invalid expressions

- Automatic result formatting (integers or decimals)

- Precise calculations with rounding to 10 decimal places

## Getting started

Add this package to your project's dependencies:

```yaml

dependencies:

  libcalculator: ^1.0.0

```

Then run:

```bash

dart pub get

```

## Usage

Simple usage example:

```dart

import 'package:libcalculator/libcalculator.dart';

void main() {

  final calculator = Calculator();

  // Basic arithmetic

  print(calculator.calculate('2 + 3'));  // Output: 5

  // Expression with parentheses

  print(calculator.calculate('2 * (3 + 4)'));  // Output: 14

  // Decimal numbers

  print(calculator.calculate('10 / 3'));  // Output: 3.3333333333

  // Complex expressions

  print(calculator.calculate('(2.5 + 3.5) * (4 - 1) / 2'));  // Output: 9

}

```