IOFunction

Type Parameters:

T - the type of the input to the operations.

R - the return type of the operations.

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
```
@FunctionalInterface
public interface IOFunction<T,R>
```
Like Function but throws IOException.

Since:

2.7

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method and Description
`default IOConsumer<T>`	`andThen(Consumer<? super R> after)` Returns a composed `IOFunction` that first applies this function to its input, and then applies the `after` consumer to the result.
`default <V> IOFunction<T,V>`	`andThen(Function<? super R,? extends V> after)` Returns a composed `IOFunction` that first applies this function to its input, and then applies the `after` function to the result.
`default IOConsumer<T>`	`andThen(IOConsumer<? super R> after)` Returns a composed `IOFunction` that first applies this function to its input, and then applies the `after` consumer to the result.
`default <V> IOFunction<T,V>`	`andThen(IOFunction<? super R,? extends V> after)` Returns a composed `IOFunction` that first applies this function to its input, and then applies the `after` function to the result.
`R`	`apply(T t)` Applies this function to the given argument.
`default <V> IOFunction<V,R>`	`compose(Function<? super V,? extends T> before)` Returns a composed `IOFunction` that first applies the `before` function to its input, and then applies this function to the result.
`default <V> IOFunction<V,R>`	`compose(IOFunction<? super V,? extends T> before)` Returns a composed `IOFunction` that first applies the `before` function to its input, and then applies this function to the result.
`default IOSupplier<R>`	`compose(IOSupplier<? extends T> before)` Returns a composed `IOFunction` that first applies the `before` function to its input, and then applies this function to the result.
`default IOSupplier<R>`	`compose(Supplier<? extends T> before)` Returns a composed `IOFunction` that first applies the `before` function to its input, and then applies this function to the result.
`static <T> IOFunction<T,T>`	`identity()` Returns a `IOFunction` that always returns its input argument.

- Method Detail
  - apply
```
R apply(T t)
 throws IOException
```
    Applies this function to the given argument.
    
    Parameters:
    
    t - the function argument
    
    Returns:
    
    the function result
    
    Throws:
    
    IOException - if the function throws an IOException
  - compose
```
default <V> IOFunction<V,R> compose(IOFunction<? super V,? extends T> before)
```
    Returns a composed IOFunction that first applies the before function to its input, and then applies this function to the result. If evaluation of either function throws an exception, it is relayed to the caller of the composed function.
    
    Type Parameters:
    
    V - the type of input to the before function, and to the composed function
    
    Parameters:
    
    before - the function to apply before this function is applied
    
    Returns:
    
    a composed function that first applies the before function and then applies this function
    
    Throws:
    
    NullPointerException - if before is null
    
    See Also:
    
    andThen(IOFunction)
  - compose
```
default <V> IOFunction<V,R> compose(Function<? super V,? extends T> before)
```
    Returns a composed IOFunction that first applies the before function to its input, and then applies this function to the result. If evaluation of either function throws an exception, it is relayed to the caller of the composed function.
    
    Type Parameters:
    
    V - the type of input to the before function, and to the composed function
    
    Parameters:
    
    before - the function to apply before this function is applied
    
    Returns:
    
    a composed function that first applies the before function and then applies this function
    
    Throws:
    
    NullPointerException - if before is null
    
    See Also:
    
    andThen(IOFunction)
  - compose
```
default IOSupplier<R> compose(IOSupplier<? extends T> before)
```
    Returns a composed IOFunction that first applies the before function to its input, and then applies this function to the result. If evaluation of either function throws an exception, it is relayed to the caller of the composed function.
    
    Parameters:
    
    before - the supplier which feeds the application of this function
    
    Returns:
    
    a composed function that first applies the before function and then applies this function
    
    Throws:
    
    NullPointerException - if before is null
    
    See Also:
    
    andThen(IOFunction)
  - compose
```
default IOSupplier<R> compose(Supplier<? extends T> before)
```
    Returns a composed IOFunction that first applies the before function to its input, and then applies this function to the result. If evaluation of either function throws an exception, it is relayed to the caller of the composed function.
    
    Parameters:
    
    before - the supplier which feeds the application of this function
    
    Returns:
    
    a composed function that first applies the before function and then applies this function
    
    Throws:
    
    NullPointerException - if before is null
    
    See Also:
    
    andThen(IOFunction)
  - andThen
```
default <V> IOFunction<T,V> andThen(IOFunction<? super R,? extends V> after)
```
    Returns a composed IOFunction that first applies this function to its input, and then applies the after function to the result. If evaluation of either function throws an exception, it is relayed to the caller of the composed function.
    
    Type Parameters:
    
    V - the type of output of the after function, and of the composed function
    
    Parameters:
    
    after - the function to apply after this function is applied
    
    Returns:
    
    a composed function that first applies this function and then applies the after function
    
    Throws:
    
    NullPointerException - if after is null
    
    See Also:
    
    compose(IOFunction)
  - andThen
```
default <V> IOFunction<T,V> andThen(Function<? super R,? extends V> after)
```
    Returns a composed IOFunction that first applies this function to its input, and then applies the after function to the result. If evaluation of either function throws an exception, it is relayed to the caller of the composed function.
    
    Type Parameters:
    
    V - the type of output of the after function, and of the composed function
    
    Parameters:
    
    after - the function to apply after this function is applied
    
    Returns:
    
    a composed function that first applies this function and then applies the after function
    
    Throws:
    
    NullPointerException - if after is null
    
    See Also:
    
    compose(IOFunction)
  - andThen
```
default IOConsumer<T> andThen(IOConsumer<? super R> after)
```
    Returns a composed IOFunction that first applies this function to its input, and then applies the after consumer to the result. If evaluation of either function throws an exception, it is relayed to the caller of the composed function.
    
    Parameters:
    
    after - the consumer to apply after this function is applied
    
    Returns:
    
    a composed function that first applies this function and then applies the after consumer
    
    Throws:
    
    NullPointerException - if after is null
    
    See Also:
    
    compose(IOFunction)
  - andThen
```
default IOConsumer<T> andThen(Consumer<? super R> after)
```
    Returns a composed IOFunction that first applies this function to its input, and then applies the after consumer to the result. If evaluation of either function throws an exception, it is relayed to the caller of the composed function.
    
    Parameters:
    
    after - the consumer to apply after this function is applied
    
    Returns:
    
    a composed function that first applies this function and then applies the after consumer
    
    Throws:
    
    NullPointerException - if after is null
    
    See Also:
    
    compose(IOFunction)
  - identity
```
static <T> IOFunction<T,T> identity()
```
    Returns a IOFunction that always returns its input argument.
    
    Type Parameters:
    
    T - the type of the input and output objects to the function
    
    Returns:
    
    a function that always returns its input argument

Interface IOFunction<T,R>

Method Summary

Method Detail

apply

compose

compose

compose

compose

andThen

andThen

andThen

andThen

identity