When you call a function, what actually happens is that function gets its own chunk of memory that's identical in size to the data type that it expects.
当你调用一个函数,实际上发生的是函数得到了自己的内存块,它的大小与它期望的数据类型相同。
Listing 4 demonstrates the different ways to call a function bar in namespace Foo.
清单4演示了在名称空间foo内调用函数bar的不同方法。
When you call a function, what actually happens is that function gets its own chunk of memory that's identical in size to the data type that it expects.
当你调用一个函数,实际上发生的是,函数得到了自己的内存块,相同的类型,是占有一样大小的内存的。
Well, if you want to call a function, it's like putting another tray on that stack of trays and that tray represents a chunk of memory that, that function can use.
嗯,如果你想调用一个函数,这就像把一个托盘放到另一个托盘上,托盘代表一块,函数可以使用的内存。
And again, a related problem that people run into is side-effects. You call a function and it returns a value, but maybe it, on purpose or on accident, modifies one of the actual parameters.
另外,一个人们常碰到的相关问题,就是副作用,你调用一个函数它返回一个值,但是故意或者无意的,它可能会修改一个实参的值。
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