Reference: Mention move keyword for lambdas

[angelsl]

From issue #36683

[rust-highfive]

r? @Manishearth

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[steveklabnik]

@bors: r+ rollup

thanks so much!

[bors]

📌 Commit b00a8a3 has been approved by steveklabnik

[angelsl]

I realise the example is rather trivial and doesn't actually requiremove there...

But I can't think of one that isn't overly complex — I guess there isn't such an example, because to even need move the closure has to live longer than the values it captures i.e. the closure needs to be boxed and stored somewhere else.

[steveklabnik]

Yes. I think it's okay to show a simple example even if it's not strictly _required_ here. If we can get a better one, I'm also up for updating it. But "there's no mentoin" to "there's a mention that's not perfect" is still a large improvement.

[frewsxcv]

From Travis CI:

failures:
---- Statements_and_expressions_16 stdout ----
error[E0425]: unresolved name `ten_times`
--> <anon>:3:1
|
3 | ten_times(move |j| println!("{}, {}", word, j));
| ^^^^^^^^^ unresolved name
error: aborting due to previous error(s)
thread 'Statements_and_expressions_16' panicked at 'Box<Any>', src/librustc/session/mod.rs:185
note: Run with `RUST_BACKTRACE=1` for a backtrace.
failures:
Statements_and_expressions_16
test result: FAILED. 94 passed; 1 failed; 18 ignored; 0 measured

[angelsl]

Right, I forgot docs are tested and context doesn't carry over. Oops.

On 4 Oct 2016 10:45 AM, "Corey Farwell" notifications@github.com wrote:

From Travis CI:

failures:

---- Statements_and_expressions_16 stdout ----
error[E0425]: unresolved name ten_times
--> :3:1
|
3 | ten_times(move |j| println!("{}, {}", word, j));
| ^^^^^^^^^ unresolved name

error: aborting due to previous error(s)

thread 'Statements_and_expressions_16' panicked at 'Box', src/librustc/session/mod.rs:185
note: Run with RUST_BACKTRACE=1 for a backtrace.

failures:
Statements_and_expressions_16

test result: FAILED. 94 passed; 1 failed; 18 ignored; 0 measured

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[sfackler]

@bors r-

[angelsl]

Alright, this should pass.

[steveklabnik]

@bors: r+ rollup

thank you!

[bors]

📌 Commit 58190cc has been approved by steveklabnik