2
這麼簡單,因爲這一定是我仍然不明白的地方我錯了:如何使用Groovy設置獨特的元素?
class A {
boolean equals(o) { true }
}
def s = [new A(), new A()] as Set
assert s.size() == 1 // Assertion failed: actually gives 2
我應該爲了得到唯一覆蓋哪種方法?
這麼簡單,因爲這一定是我仍然不明白的地方我錯了:如何使用Groovy設置獨特的元素?
class A {
boolean equals(o) { true }
}
def s = [new A(), new A()] as Set
assert s.size() == 1 // Assertion failed: actually gives 2
我應該爲了得到唯一覆蓋哪種方法?
hashCode,就像使用Java的
class A {
boolean equals(o) { true }
int hashCode() { 1 }
}
def s = [new A(), new A()] as Set
assert s.size() == 1