ConceptIndex (MPS.Core (JetBrains MPS 2019.1.0))

All Known Implementing Classes:

ConceptSwitchIndex, LanguageConceptIndex
```
public interface ConceptIndex
```
Translation from SConcept to integer value.

Since:

3.5

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`default int`	`index(SAbstractConcept c)`
`int`	`index(SAbstractConcept c, int missingValue)`

- Method Detail
  - index
```
default int index(@Nullable
                  SAbstractConcept c)
```
    Parameters:
    
    c - concept to look up
    
    Returns:
    
    -1 if this index is not aware of the concept, or concept is null
  - index
```
int index(@Nullable
          SAbstractConcept c,
          int missingValue)
```
    Parameters:
    
    c - concept to look up
    
    missingValue - value indicating index miss
    
    Returns:
    
    integer index of the concept, or missingValue if concept is null or not known to the index.