ScalarFunction (vespajlib 7.143.13 API)

All Superinterfaces:

java.util.function.Function<EvaluationContext<?>,java.lang.Double>
```
public interface ScalarFunction
extends java.util.function.Function<EvaluationContext<?>,java.lang.Double>
```
A function which returns a scalar

Author:

bratseth

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`java.lang.Double`	`apply(EvaluationContext<?> context)`
`default java.lang.String`	`toString(ToStringContext context)`

Methods inherited from interface java.util.function.Function
andThen, compose

- Method Detail
  - apply
```
java.lang.Double apply(EvaluationContext<?> context)
```
    Specified by:
    
    apply in interface java.util.function.Function<EvaluationContext<?>,java.lang.Double>
  - toString
```
default java.lang.String toString(ToStringContext context)
```