小编Ale*_*lov的帖子

Ambiguous error当我尝试使用包含带有功能参数的重载方法的代码时,我得到了.

我写了一个小片段,显示了一个模棱两可的行为:

import java.util.function.BiConsumer
import java.util.function.Consumer

class Test {

    static void main(String... args) {
        execute({ x -> println("Consumer") })
        execute({ x, y -> println("BiConsumer") })
    }

    static void execute(Consumer<Integer> c) {
        c.accept(100)
    }

    static void execute(BiConsumer<Integer, Integer> c) {
        c.accept(1, 2)
    }
}

输出(2.4.9 groovy):

    Exception in thread "main" groovy.lang.GroovyRuntimeException: Ambiguous method overloading for method Test#execute.
Cannot resolve which method to invoke for [class Test$_main_closure1] due to overlapping prototypes between:
    [interface java.util.function.BiConsumer]
    [interface java.util.function.Consumer]
    at groovy.lang.MetaClassImpl.chooseMostSpecificParams(MetaClassImpl.java:3268)
    at groovy.lang.MetaClassImpl.chooseMethodInternal(MetaClassImpl.java:3221) …