Exception Handling

All the exceptions in just functional derive from the JustFunctionalBaseException so you can use only one catch. Below is a high level explanation of all other exceptions

Exception	Throws when	Example
JustFunctionalBaseException	Base exception class
ExpressionIsNullOrEmptyException	When Expression Is Null Or Empty Exception
MissingOperandException	When there is a operator with less operands that required	5+ or -*5
MissingOperatorException	When there are operands that need a operator that is missing	5X or 4+5)
SyntaxErrorInExpressionException	General syntax error exception	Xabc2. In here operator abc is not defined
VariableUndefinedException	When the expression needs a variable that is not passed in the Context	Only applies when using PredefinedVariablesProvider

Example

try
{
    string fx = "Y+3";
    Function f = _functionFactory.Create(fx);
    var result = f.Evaluate(new EvaluationContext(new Dictionary<string, decimal>() {["X"] = 3}));
}
catch (JustFunctionalBaseException e)
{
    //Syntax error cause Y is not recognized....
}

What’s next

You can learn the more about the Low Level Components or go to the docs.