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doc: Update tutorial for task API changes

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This commit is contained in:
Brian Anderson 2012-03-10 15:30:51 -08:00
parent 91b988ea45
commit 57af1e9f67
1 changed files with 5 additions and 6 deletions
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doc/tutorial.md
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@ -2385,8 +2385,7 @@ The argument to `task::spawn()` is a [unique
closure](#unique-closures) of type `fn~()`, meaning that it takes no
arguments and generates no return value. The effect of `task::spawn()`
is to fire up a child task that will execute the closure in parallel
with the creator. The result is a task id, here stored into the
variable `child_task`.
with the creator.
## Ports and channels
@ -2402,10 +2401,10 @@ in parallel. We might write something like:
# fn some_other_expensive_computation() {}
let port = comm::port::<int>();
let chan = comm::chan::<int>(port);
let child_task = task::spawn {||
task::spawn {||
let result = some_expensive_computation();
comm::send(chan, result);
};
}
some_other_expensive_computation();
let result = comm::recv(port);
~~~~
@ -2433,10 +2432,10 @@ The next statement actually spawns the child:
# fn some_expensive_computation() -> int { 42 }
# let port = comm::port::<int>();
# let chan = comm::chan::<int>(port);
let child_task = task::spawn {||
task::spawn {||
let result = some_expensive_computation();
comm::send(chan, result);
};
}
~~~~
This child will perform the expensive computation send the result