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体验新版 GitCode,发现更多精彩内容 >>
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e68697b5
编写于
7月 23, 2013
作者:
G
gifnksm
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tutorial: Remove the sentence about mutable fields.
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@@ -1089,10 +1089,8 @@ we might like to compute the distance between `on_the_stack` and
...
@@ -1089,10 +1089,8 @@ we might like to compute the distance between `on_the_stack` and
to define a function that takes two arguments of type point—that is,
to define a function that takes two arguments of type point—that is,
it takes the points by value. But this will cause the points to be
it takes the points by value. But this will cause the points to be
copied when we call the function. For points, this is probably not so
copied when we call the function. For points, this is probably not so
bad, but often copies are expensive or, worse, if copied data are in mutable
bad, but often copies are expensive. So we’d like to define a function
slots, they can change the semantics of your program. So we’d like to
that takes the points by pointer. We can use borrowed pointers to do this:
define a function that takes the points by pointer. We can use
borrowed pointers to do this:
~~~
~~~
# struct Point { x: float, y: float }
# struct Point { x: float, y: float }
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