模块 net.dongliu.commons

程序包 net.dongliu.commons

接口 Lazy<T>

类型参数:

T - the value type

所有超级接口:

java.util.function.Supplier<T>

public interface Lazy<T>
extends java.util.function.Supplier<T>

Supplier that only compute value only once.

If error occurred when compute value, the exception would be thrown, and the next call will run the code again. If computed value is null, a NPE would be thrown.

方法概要

修饰符和类型	方法	说明
T	get()
<R> Lazy<R>	map(java.util.function.Function<? super T,? extends R> function)	Create a new lazy value, with value is calculated using function
static <T> Lazy<T>	of(java.util.function.Supplier<T> supplier)	Create one new Lazy instance.

方法详细资料

of

static <T> Lazy<T> of(java.util.function.Supplier<T> supplier)

Create one new Lazy instance.

类型参数:

T - the value type

参数:

supplier - provider the value

返回:

the created lazy value

get

T get()

指定者:

get 在接口中 java.util.function.Supplier<T>

map

<R> Lazy<R> map(java.util.function.Function<? super T,? extends R> function)

Create a new lazy value, with value is calculated using function

类型参数:

R - new value type

参数:

function - the function to calculate value

返回:

the new lazy value