l*6
2 楼
刚买了放到后坐中间,forward facing,才发现怎莫这么高啊,都当住了一些后视镜的视
野,可以把headrest放低,但最后面的挡板不能放低,有人用这款吗?都是这么高吗?
老公坚持放中间,说这样比方旁边安全些。
提前感谢。
野,可以把headrest放低,但最后面的挡板不能放低,有人用这款吗?都是这么高吗?
老公坚持放中间,说这样比方旁边安全些。
提前感谢。
b*d
3 楼
rt.大家是怎么清理前院小花坛的杂草的。
发现roundup+mulch已经不work了,
不知道是不是传说中的抗药性,roundup 撒了一圈,不该长该长的都还在那儿。。
不要说上手啊,,,那个真的是太辛苦了。5555 雨水多那杂草更是蹭蹭的。有没有好
办法?或者别的药可以推荐?谢谢
发现roundup+mulch已经不work了,
不知道是不是传说中的抗药性,roundup 撒了一圈,不该长该长的都还在那儿。。
不要说上手啊,,,那个真的是太辛苦了。5555 雨水多那杂草更是蹭蹭的。有没有好
办法?或者别的药可以推荐?谢谢
k*0
4 楼
2个对象互相有成员变量引用对方, gc也会回收吗?
To my knowlege, new java vm can detect such cases.
To my knowlege, new java vm can detect such cases.
k*h
5 楼
我用这款,是很高。娃娃小的时候,觉得padding 很多,挺好。大了之后,那个枕头弄
得娃娃要沟着背坐,觉得还没马拉松好用。
得娃娃要沟着背坐,觉得还没马拉松好用。
R*C
6 楼
上weed block
D*C
10 楼
you already set the source to null.
then the reference is pointing to null also.
so both obj are good for gc.
why won't they?
then what's the point to set an obj to null?
then the reference is pointing to null also.
so both obj are good for gc.
why won't they?
then what's the point to set an obj to null?
m*b
11 楼
I have two of them in my car, one on each side, so there's not an issue with
the rear-view mirror. Before that, I always had it just on one side of the
car. The key is to drive safely and carefully. I don't know how much
difference it really makes in the case of an accident, and I don't want to
find out!
the rear-view mirror. Before that, I always had it just on one side of the
car. The key is to drive safely and carefully. I don't know how much
difference it really makes in the case of an accident, and I don't want to
find out!
h*s
12 楼
一个字, 拔。
l*9
13 楼
谢谢各位了
r*a
14 楼
weed block+mulch(>6 inch)+拔...
after a few months, do it again...
again... and again...
after a few months, do it again...
again... and again...
g*i
15 楼
这是一道SCJP的题吧,考点就是CIRCULAR REFERENCE AND GARBAGE COLLECTION.
这种题只要记住一点,GC的关键不是设不设null,而是Unreachable :An object
enters an unreachable state when no more strong references to it exist. When
an object is unreachable, it is a candidate for collection.
http://java.sun.com/docs/books/performance/1st_edition/html/JPAppGC.fm.html
A.3.4 Unreachable 有详细的解释。
这种题只要记住一点,GC的关键不是设不设null,而是Unreachable :An object
enters an unreachable state when no more strong references to it exist. When
an object is unreachable, it is a candidate for collection.
http://java.sun.com/docs/books/performance/1st_edition/html/JPAppGC.fm.html
A.3.4 Unreachable 有详细的解释。
R*G
16 楼
夏草不过冬,冬草夏天亡。。
相关阅读