Predicate1 (Apache Calcite API)

Type Parameters:

T0 - Type of argument #0

All Superinterfaces:

Function<Boolean>
```
public interface Predicate1<T0>
extends Function<Boolean>
```
Function with one parameter returning a native boolean value.

Field Summary

Fields
Modifier and Type	Field	Description
`static Predicate1<Object>`	`FALSE`	Predicate that always evaluates to `false`.
`static Predicate1<Object>`	`TRUE`	Predicate that always evaluates to `true`.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type Method Description

boolean apply(T0 v0)

- Field Detail
  - TRUE
```
static final Predicate1<Object> TRUE
```
    Predicate that always evaluates to true.
    
    See Also:
    
    Functions.truePredicate1()
  - FALSE
```
static final Predicate1<Object> FALSE
```
    Predicate that always evaluates to false.
    
    See Also:
    
    Functions.falsePredicate1()
- Method Detail
  - apply
```
boolean apply(T0 v0)
```