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android
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toolchain
/
rustc
/
ee32a8b31351dab7161ea2edd877e46fc49c72d0
/
.
/
vendor
/
clap-4.4.4
/
examples
/
tutorial_derive
/
03_05_default_values.rs
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use
clap
::
Parser
;
#[
derive
(
Parser
)]
#[
command
(
author
,
version
,
about
,
long_about
=
None
)]
struct
Cli
{
#[
arg
(
default_value_t
=
2020
)]
port
:
u16
,
}
fn
main
()
{
let
cli
=
Cli
::
parse
();
println
!(
"port: {:?}"
,
cli
.
port
);
}