LambdaSafe.InvocationResult (Spring Boot API)

java.lang.Object
- org.springframework.boot.util.LambdaSafe.InvocationResult<R>

类型参数:
R - the result type
封闭类:
LambdaSafe
```
public static final class LambdaSafe.InvocationResult<R>
extends Object
```
The result of a callback which may be a value, null or absent entirely if the callback wasn't suitable. Similar in design to Optional but allows for null as a valid value.

方法概要

所有方法静态方法实例方法具体方法
修饰符和类型	方法	说明
`R`	`get()`	Return the result of the invocation or `null` if the callback wasn't suitable.
`R`	`get(R fallback)`	Return the result of the invocation or the given fallback if the callback wasn't suitable.
`boolean`	`hasResult()`	Return true if a result in present.
`static <R> LambdaSafe.InvocationResult<R>`	`noResult()`	Return an `LambdaSafe.InvocationResult` instance representing no result.
`static <R> LambdaSafe.InvocationResult<R>`	`of(R value)`	Create a new `LambdaSafe.InvocationResult` instance with the specified value.

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 方法详细资料
  - hasResult
```
public boolean hasResult()
```
    Return true if a result in present.
    返回:
    if a result is present
  - get
```
public R get()
```
    Return the result of the invocation or null if the callback wasn't suitable.
    返回:
    the result of the invocation or null
  - get
```
public R get(R fallback)
```
    Return the result of the invocation or the given fallback if the callback wasn't suitable.
    参数:
    fallback - the fallback to use when there is no result
    返回:
    the result of the invocation or the fallback
  - of
```
public static <R> LambdaSafe.InvocationResult<R> of(R value)
```
    Create a new LambdaSafe.InvocationResult instance with the specified value.
    类型参数:
    R - the result type
    参数:
    value - the value (may be null)
    返回:
    an LambdaSafe.InvocationResult
  - noResult
```
public static <R> LambdaSafe.InvocationResult<R> noResult()
```
    Return an LambdaSafe.InvocationResult instance representing no result.
    类型参数:
    R - the result type
    返回:
    an LambdaSafe.InvocationResult