mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-09-20 22:51:58 +00:00
86 lines
1.9 KiB
Rust
86 lines
1.9 KiB
Rust
#![warn(clippy::option_map_unit_fn)]
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#![allow(unused)]
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#![allow(clippy::uninlined_format_args, clippy::unnecessary_wraps)]
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fn do_nothing<T>(_: T) {}
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fn diverge<T>(_: T) -> ! {
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panic!()
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}
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fn plus_one(value: usize) -> usize {
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value + 1
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}
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fn option() -> Option<usize> {
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Some(10)
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}
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struct HasOption {
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field: Option<usize>,
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}
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impl HasOption {
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fn do_option_nothing(&self, value: usize) {}
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fn do_option_plus_one(&self, value: usize) -> usize {
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value + 1
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}
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}
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#[rustfmt::skip]
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fn option_map_unit_fn() {
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let x = HasOption { field: Some(10) };
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x.field.map(plus_one);
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let _ : Option<()> = x.field.map(do_nothing);
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x.field.map(do_nothing);
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x.field.map(do_nothing);
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x.field.map(diverge);
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let captured = 10;
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if let Some(value) = x.field { do_nothing(value + captured) };
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let _ : Option<()> = x.field.map(|value| do_nothing(value + captured));
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x.field.map(|value| x.do_option_nothing(value + captured));
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x.field.map(|value| { x.do_option_plus_one(value + captured); });
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x.field.map(|value| do_nothing(value + captured));
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x.field.map(|value| { do_nothing(value + captured) });
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x.field.map(|value| { do_nothing(value + captured); });
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x.field.map(|value| { { do_nothing(value + captured); } });
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x.field.map(|value| diverge(value + captured));
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x.field.map(|value| { diverge(value + captured) });
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x.field.map(|value| { diverge(value + captured); });
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x.field.map(|value| { { diverge(value + captured); } });
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x.field.map(|value| plus_one(value + captured));
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x.field.map(|value| { plus_one(value + captured) });
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x.field.map(|value| { let y = plus_one(value + captured); });
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x.field.map(|value| { plus_one(value + captured); });
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x.field.map(|value| { { plus_one(value + captured); } });
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x.field.map(|ref value| { do_nothing(value + captured) });
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option().map(do_nothing);
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option().map(|value| println!("{:?}", value));
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}
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fn main() {}
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