[問題] 書上看到一題關於new的問題
class ClassB{
private:
ClassA* ptr1;
ClassA* ptr2;
public:
ClassB (ClassA val1,Class val2)
:ptr1(new Class(val1)),ptr2(new ClassA(val2)){}
...(略)
}
書上提到,似這樣的寫法可以以auto_ptr取代,避免new失敗造成資源的遺失
書中提到,以上面的ctor來說,new第二個有可能會失敗造成resource leak
請問這種情形很容易發生嗎?為什麼?
煩請解答,謝謝
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