StatefulUpdate (MPS.Core (JetBrains MPS 2019.1.0))

java.lang.Object
- jetbrains.mps.util.StatefulUpdate<T>

```
public class StatefulUpdate<T>
extends Object
```
Stateful map of values updated according to custom external code.

Since:

2019.1

- Constructor Summary
  
  Constructors
  Constructor Description
  
  StatefulUpdate(Function<T,T> updateFunc)
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  boolean isChanged(T value)
  
  T newValue(T oldValue)
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - StatefulUpdate
```
public StatefulUpdate(Function<T,T> updateFunc)
```
    Parameters:
    
    updateFunc - function to give new value, or null to indicate value doesn't need an update
- Method Detail
  - isChanged
```
public boolean isChanged(T value)
```
  - newValue
```
@Nullable
public T newValue(T oldValue)
```