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closures
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old-closure-arg-call-as.rs
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// run-pass
#![
allow
(
non_snake_case
)]
fn
asBlock
<
F
>(
f
:
F
)
->
usize where F
:
FnOnce
()
->
usize
{
return
f
();
}
pub
fn
main
()
{
let
x
=
asBlock
(||
22
);
assert_eq
!(
x
,
22
);
}