传值?还是传引用?
可以这样做是因为只有物件参考是藉由传值传递。
You can do this because only the object reference is passed by value.
起初,借由传值传递的变数来修改参考的物件可能并不明显。
At first it may not be obvious that you can modify an object referred to by a variable that is passed by value.
I'm much better having an exception get handled at the time of input than to let that prop -- that value rather propagate through a whole bunch of code until eventually it hits an error 17 calls later, and you have no clue where it came from.
不是我期望的格式,这时我最好有一个异常处理,而不是让其传下去,这个值传到代码的整个分支,最终会导致一个错误17调用的发生,并且你不知道这个错误是哪里来的。
X I'm passing an X, and yet I'm also assigning the return value to X. So just intuitively what's going to be the effect of this one line of code?
我传一个X,之后我把返回值赋值给,很明显,这一行代码,将会产生什么作用?
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