38 lines
843 B
C#
38 lines
843 B
C#
using System;
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using System.Collections.Generic;
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using System.ComponentModel.DataAnnotations;
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using SimpleExpressionEvaluator;
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namespace BlueWest.Data;
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public class MathOperation
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{
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[Key] public TimeSpan CreationDate { get; set; }
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private bool _isCalculated = false;
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private string _expression;
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private decimal _resultingAmount;
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private ExpressionEvaluator _expressionEvaluator = new ExpressionEvaluator();
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public decimal ResultingAmount
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{
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get
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{
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if (_isCalculated) return _resultingAmount;
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return 0;
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}
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}
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public MathOperation() { }
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public MathOperation(string expression, Dictionary<string, decimal> letters)
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{
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_resultingAmount = _expressionEvaluator.Evaluate(expression, letters);
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_isCalculated = true;
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}
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} |