smart_math 1.0.2

smart_math: ^1.0.2 copied to clipboard

example/main.dart

import 'package:flutter/material.dart';
import 'package:smart_math/smart_math.dart';

void main() {
  runApp(const SmartMathDemo());
}

class SmartMathDemo extends StatelessWidget {
  const SmartMathDemo({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        useMaterial3: true,
      ),
      home: const DemoHome(),
    );
  }
}

class DemoHome extends StatelessWidget {
  const DemoHome({super.key});

  @override
  Widget build(BuildContext context) {
    final parser = ExpressionParser();

    // Calculator
    final addition = SmartCalculator.add(10, 20);

    final division = SmartCalculator.divide(100, 5);

    // Expression Parser

    final expression = parser.evaluate("10+(5*2)");

    // Arithmetic

    final factorial = Arithmetic.factorial(5);

    // Scientific

    final power = ScientificCalculator.power(
      2,
      5,
    );

    // Fraction

    final fraction = Fraction(1, 2) + Fraction(1, 3);

    // BigInt

    final bigFactorial = BigIntMath.factorial(20);

    // Complex

    final complex = ComplexNumber(2, 3) * ComplexNumber(1, 2);

    // Finance

    final emi = EMI.calculate(
      principal: 100000,
      annualRate: 8,
      years: 5,
    );

    final sip = SIP.calculate(
      monthlyInvestment: 500,
      annualReturn: 12,
      years: 10,
    );

    final interest = Interest.simple(
      principal: 10000,
      rate: 10,
      years: 2,
    );

    // Health

    final bmi = BMI.calculate(
      weightKg: 70,
      heightMeter: 1.75,
    );

    final age = Age.calculate(
      birthDate: DateTime(2000, 1, 1),
    );

    // Conversion

    final km = LengthConverter.meterToKm(
      5000,
    );

    final pound = WeightConverter.kgToPound(
      10,
    );

    final fahrenheit = TemperatureConverter.celsiusToFahrenheit(
      25,
    );

    // Statistics

    final mean = Statistics.mean(
      [10, 20, 30, 40],
    );

    // Matrix

    final matrix = Matrix(
      [
        [1, 2],
        [3, 4]
      ],
    );

    return Scaffold(
      appBar: AppBar(
        title: const Text(
          "Smart Math Demo",
        ),
      ),
      body: ListView(
        padding: const EdgeInsets.all(16),
        children: [
          resultCard(
            "Calculator",
            """
Addition: $addition

Division: $division
""",
          ),
          resultCard(
            "Expression Parser",
            """
10+(5*2)

Result:
$expression
""",
          ),
          resultCard(
            "Arithmetic",
            """
Factorial 5:

$factorial
""",
          ),
          resultCard(
            "Scientific",
            """
2 Power 5:

$power
""",
          ),
          resultCard(
            "Fraction",
            """
1/2 + 1/3

$fraction
""",
          ),
          resultCard(
            "BigInt",
            """
20!

$bigFactorial
""",
          ),
          resultCard(
            "Complex Number",
            """
(2+3i)*(1+2i)

$complex

Magnitude:
${complex.magnitude()}
""",
          ),
          resultCard(
            "Finance",
            """
EMI:
$emi

SIP:
$sip

Simple Interest:
$interest
""",
          ),
          resultCard(
            "Health",
            """
BMI:
$bmi

Category:
${BMI.category(bmi)}

Age:
$age years
""",
          ),
          resultCard(
            "Conversion",
            """
5000 Meter =
$km KM


10 KG =
$pound Pound


25°C =
$fahrenheit°F
""",
          ),
          resultCard(
            "Statistics",
            """
Mean:

$mean
""",
          ),
          resultCard(
            "Matrix",
            """
Matrix:

$matrix


Determinant:

${matrix.determinant()}
""",
          ),
        ],
      ),
    );
  }

  Widget resultCard(
    String title,
    String value,
  ) {
    return Card(
      margin: const EdgeInsets.only(
        bottom: 12,
      ),
      child: Padding(
        padding: const EdgeInsets.all(16),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            Text(
              title,
              style: const TextStyle(
                fontSize: 20,
                fontWeight: FontWeight.bold,
              ),
            ),
            const SizedBox(
              height: 10,
            ),
            Text(
              value,
              style: const TextStyle(
                fontSize: 16,
              ),
            ),
          ],
        ),
      ),
    );
  }
}