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tutorial: Fix obsolete names
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@ -992,7 +992,7 @@ task-local garbage collector. It will be destroyed at some point after there
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are no references left to the box, no later than the end of the task. Managed
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boxes lack an owner, so they start a new ownership tree and don't inherit
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mutability. They do own the contained object, and mutability is defined by the
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type of the shared box (`@` or `@mut`). An object containing a managed box is
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type of the managed box (`@` or `@mut`). An object containing a managed box is
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not `Owned`, and can't be sent between tasks.
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~~~~
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@ -1089,8 +1089,8 @@ we might like to compute the distance between `on_the_stack` and
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to define a function that takes two arguments of type point—that is,
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it takes the points by value. But this will cause the points to be
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copied when we call the function. For points, this is probably not so
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bad, but often copies are expensive or, worse, if there are mutable
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fields, they can change the semantics of your program. So we’d like to
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bad, but often copies are expensive or, worse, if copied data are in mutable
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slots, they can change the semantics of your program. So we’d like to
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define a function that takes the points by pointer. We can use
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borrowed pointers to do this:
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