Variable

All Superinterfaces:

javolution.lang.Reference<X>

All Known Implementing Classes:

Variable.Global, Variable.Local
```
public interface Variable<X>
extends javolution.lang.Reference<X>
```
This interface represents a symbol on whose value a Function depends. If the functions is not shared between multiple-threads the simple Variable.Local implementation can be used. For global functions (functions used concurrently by multiple threads) the Variable.Global implementation with context-local settings is recommended.

See Also:

Function.evaluate()

Nested Class Summary

Nested Classes
Modifier and Type	Interface	Description
`static class`	`Variable.Global<X>`	This class represents a simple `Variable` implementation with `context-local` values.
`static class`	`Variable.Local<X>`	This class represents a simple `Variable` implementation for functions not shared between threads (non static).

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type Method Description

String getSymbol()
Returns the symbol for this variable.
- Methods inherited from interface javolution.lang.Reference
  get, set

- Method Detail
  - getSymbol
```
String getSymbol()
```
    Returns the symbol for this variable.
    
    Returns:
    
    this variable's symbol.