The Business Comprehension Test (BCT) is a useful expression.
Simple mathematical and boolean expressions can be evaluated with EvalEx.
Simple mathematical and boolean expressions can be evaluated with EvalEx.
The project and source code can be downloaded from the release area.
The precision is set to 7 digits.Depending on your use-case, you will want to set a different precision.
An expressionSettings object can be used to set the default settings.A builder pattern can be used to create it.
Simply create an instance of Expression.Operator and add it to the expression.If it is left associative, parameters are the operator string.The operator's method will be called with the BigDecimal values.All existing operators can be changed.
Adding custom functions is as easy as adding custom operators.Add an instance of Expression.Function to the expression.The count of required parameters is the function name.A list of the BigDecimal parameters will be used to call the functions eval.A -1 is the number of parameters.All existing functions can be changed.
You can use string parameters to create a custom function.Add an instance of Expression.LazyFunction to the expression.The count of required parameters is the function name.The lazyEval method will be called with a list of parameters.A -1 is the number of parameters.The parameters need to be surrounded.
Add a function that will compare string1 and string2 to see if they are equal.