a41cb7adbe
* add `rest_arg` to pass second argument from `map_or(U, F)` * extract some procedures into closure refac: rename rest_arg/second_arg refac: organize function argument order * put `second_arg` next to `arg` argument
42 lines
1012 B
Rust
42 lines
1012 B
Rust
// run-rustfix
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#![warn(clippy::manual_ok_or)]
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#![allow(clippy::or_fun_call)]
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#![allow(clippy::disallowed_names)]
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#![allow(clippy::redundant_closure)]
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#![allow(dead_code)]
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#![allow(unused_must_use)]
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fn main() {
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// basic case
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let foo: Option<i32> = None;
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foo.ok_or("error");
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// eta expansion case
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foo.ok_or("error");
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// turbo fish syntax
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None::<i32>.ok_or("error");
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// multiline case
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#[rustfmt::skip]
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foo.ok_or(&format!(
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"{}{}{}{}{}{}{}",
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"Alice", "Bob", "Sarah", "Marc", "Sandra", "Eric", "Jenifer"));
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// not applicable, closure isn't direct `Ok` wrapping
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foo.map_or(Err("error"), |v| Ok(v + 1));
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// not applicable, or side isn't `Result::Err`
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foo.map_or(Ok::<i32, &str>(1), |v| Ok(v));
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// not applicable, expr is not a `Result` value
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foo.map_or(42, |v| v);
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// TODO patterns not covered yet
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match foo {
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Some(v) => Ok(v),
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None => Err("error"),
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};
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foo.map_or_else(|| Err("error"), |v| Ok(v));
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}
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