IVariableResolver (JavaDoc of the JbcParser - The Mathematical Expression Parser for Java project)

```
public interface IVariableResolver
```
IVariableResolver is implemented by the user and used in IMathParser.setVariableResolver(IVariableResolver) to enable the Math Parser allow variables that are not defined before parse time. if set, IVariableResolver will be used to return the values of variables at evalutaion time. This is typically needed when the problem domain is too large to define all possible variables ahead of time. When IMathParser.setVariableResolver is set, parser will tolerate undefined variables at parse time and it will invoke IVariableResolver to retrieve variable values at evaluation time.

All Methods Instance Methods Abstract Methods
Modifier and Type	Method and Description
`double`	`getValue(IMathParser parser, java.lang.String varName)` getValue function is implemented by the user and it is called by the parser to get the value of an undefined variable at evaluation time.

Interface IVariableResolver