PluginDefaultGroovyMethods (Groovy 3.0.0-beta-2)

java.lang.Object
- org.codehaus.groovy.vmplugin.v8.PluginDefaultGroovyMethods

```
public class PluginDefaultGroovyMethods
extends Object
```
Defines new Groovy methods which appear on normal JDK 8 classes inside the Groovy environment.

Since:

2.5.0

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static boolean`	`asBoolean(Optional<?> optional)` Coerce an Optional instance to a boolean value.
`static <S,T> Future<T>`	`collect(Future<S> self, Closure<T> transform)` Returns a Future asynchronously returning a transformed result.
`static <S,T> Optional<T>`	`collect(Optional<S> self, Closure<T> transform)` If the optional contains a value, returns an optional containing the transformed value obtained using the `transform` closure or otherwise an empty optional.
`static Stream<Boolean>`	`stream(boolean[] self)` Returns a sequential `Stream` with the specified array as its source.
`static Stream<Byte>`	`stream(byte[] self)` Returns a sequential `Stream` with the specified array as its source.
`static Stream<Character>`	`stream(char[] self)` Returns a sequential `Stream` with the specified array as its source.
`static Stream<Double>`	`stream(double[] self)` Returns a sequential `Stream` with the specified array as its source.
`static Stream<Float>`	`stream(float[] self)` Returns a sequential `Stream` with the specified array as its source.
`static Stream<Integer>`	`stream(int[] self)` Returns a sequential `Stream` with the specified array as its source.
`static Stream<Long>`	`stream(long[] self)` Returns a sequential `Stream` with the specified array as its source.
`static Stream<Short>`	`stream(short[] self)` Returns a sequential `Stream` with the specified array as its source.
`static <T> Stream<T>`	`stream(T[] self)` Returns a sequential `Stream` with the specified array as its source.
`static <T> List<T>`	`toList(BaseStream<T,? extends BaseStream> stream)` Accumulates the elements of stream into a new List.
`static <T> List<T>`	`toList(Stream<T> stream)` Accumulates the elements of stream into a new List.
`static <T> Set<T>`	`toSet(BaseStream<T,? extends BaseStream> stream)` Accumulates the elements of stream into a new Set.
`static <T> Set<T>`	`toSet(Stream<T> stream)` Accumulates the elements of stream into a new Set.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - asBoolean
```
public static boolean asBoolean(Optional<?> optional)
```
    Coerce an Optional instance to a boolean value.
    
    Parameters:
    
    optional - the Optional
    
    Returns:
    
    true if a value is present, otherwise false
  - collect
```
public static <S,T> Optional<T> collect(Optional<S> self,
                                        Closure<T> transform)
```
    If the optional contains a value, returns an optional containing the transformed value obtained using the transform closure or otherwise an empty optional.
```
 assert Optional.of("foobar").collect{ it.size() }.get() == 6
 assert !Optional.empty().collect{ it.size() }.isPresent()
 
```
    Parameters:
    
    self - an Optional
    
    transform - the closure used to transform the optional value if present
    
    Returns:
    
    an Optional containing the transformed value or empty if the optional is empty or the transform returns null
  - collect
```
public static <S,T> Future<T> collect(Future<S> self,
                                      Closure<T> transform)
```
    Returns a Future asynchronously returning a transformed result.
```
 import java.util.concurrent.*
 def executor = Executors.newSingleThreadExecutor()
 Future foobar = executor.submit{ "foobar" }
 Future foobarSize = foobar.collect{ it.size() }
 assert foobarSize.get() == 6
 executor.shutdown()
 
```
    Parameters:
    
    self - a Future
    
    transform - the closure used to transform the Future value
    
    Returns:
    
    a Future allowing the transformed value to be obtained asynchronously
  - toList
```
public static <T> List<T> toList(Stream<T> stream)
```
    Accumulates the elements of stream into a new List.
    
    Type Parameters:
    
    T - the type of element
    
    Parameters:
    
    stream - the Stream
    
    Returns:
    
    a new java.util.List instance
  - toSet
```
public static <T> Set<T> toSet(Stream<T> stream)
```
    Accumulates the elements of stream into a new Set.
    
    Type Parameters:
    
    T - the type of element
    
    Parameters:
    
    stream - the Stream
    
    Returns:
    
    a new java.util.Set instance
  - toList
```
public static <T> List<T> toList(BaseStream<T,? extends BaseStream> stream)
```
    Accumulates the elements of stream into a new List.
    
    Type Parameters:
    
    T - the type of element
    
    Parameters:
    
    stream - the java.util.stream.BaseStream
    
    Returns:
    
    a new java.util.List instance
  - toSet
```
public static <T> Set<T> toSet(BaseStream<T,? extends BaseStream> stream)
```
    Accumulates the elements of stream into a new Set.
    
    Type Parameters:
    
    T - the type of element
    
    Parameters:
    
    stream - the java.util.stream.BaseStream
    
    Returns:
    
    a new java.util.Set instance
  - stream
```
public static <T> Stream<T> stream(T[] self)
```
    Returns a sequential Stream with the specified array as its source.
    
    Type Parameters:
    
    T - The type of the array elements
    
    Parameters:
    
    self - The array, assumed to be unmodified during use
    
    Returns:
    
    a Stream for the array
  - stream
```
public static Stream<Integer> stream(int[] self)
```
    Returns a sequential Stream with the specified array as its source.
    
    Parameters:
    
    self - The array, assumed to be unmodified during use
    
    Returns:
    
    a Stream for the array
  - stream
```
public static Stream<Long> stream(long[] self)
```
    Returns a sequential Stream with the specified array as its source.
    
    Parameters:
    
    self - The array, assumed to be unmodified during use
    
    Returns:
    
    a Stream for the array
  - stream
```
public static Stream<Double> stream(double[] self)
```
    Returns a sequential Stream with the specified array as its source.
    
    Parameters:
    
    self - The array, assumed to be unmodified during use
    
    Returns:
    
    a Stream for the array
  - stream
```
public static Stream<Character> stream(char[] self)
```
    Returns a sequential Stream with the specified array as its source.
    
    Parameters:
    
    self - The array, assumed to be unmodified during use
    
    Returns:
    
    a Stream for the array
  - stream
```
public static Stream<Byte> stream(byte[] self)
```
    Returns a sequential Stream with the specified array as its source.
    
    Parameters:
    
    self - The array, assumed to be unmodified during use
    
    Returns:
    
    a Stream for the array
  - stream
```
public static Stream<Short> stream(short[] self)
```
    Returns a sequential Stream with the specified array as its source.
    
    Parameters:
    
    self - The array, assumed to be unmodified during use
    
    Returns:
    
    a Stream for the array
  - stream
```
public static Stream<Boolean> stream(boolean[] self)
```
    Returns a sequential Stream with the specified array as its source.
    
    Parameters:
    
    self - The array, assumed to be unmodified during use
    
    Returns:
    
    a Stream for the array
  - stream
```
public static Stream<Float> stream(float[] self)
```
    Returns a sequential Stream with the specified array as its source.
    
    Parameters:
    
    self - The array, assumed to be unmodified during use
    
    Returns:
    
    a Stream for the array

Class PluginDefaultGroovyMethods

Method Summary

Methods inherited from class java.lang.Object

Method Detail

asBoolean

collect

collect

toList

toSet

toList

toSet

stream

stream

stream

stream

stream

stream

stream

stream

stream