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Simplify if-let example (#1977)

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I find that `if let` makes the most sense to use when you don't have an
`else` case, otherwise it's generally clearer to express the same thing
with a `match`. This changes the `if let` example to be (arguably) a bit
more idiomatic and less verbose.
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Nicole L 2024-04-12 09:45:01 -07:00 committed by GitHub
parent d966750535
commit 04c28ed641
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1 changed files with 6 additions and 7 deletions
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13
src/pattern-matching/let-control-flow.md
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@ -18,14 +18,13 @@ The
lets you execute different code depending on whether a value matches a pattern: lets you execute different code depending on whether a value matches a pattern:
```rust,editable ```rust,editable
use std::time::Duration;
fn sleep_for(secs: f32) { fn sleep_for(secs: f32) {
let dur = if let Ok(dur) = std::time::Duration::try_from_secs_f32(secs) { if let Ok(dur) = Duration::try_from_secs_f32(secs) {
dur std::thread::sleep(dur);
} else { println!("slept for {:?}", dur);
std::time::Duration::from_millis(500) }
};
std::thread::sleep(dur);
println!("slept for {:?}", dur);
} }
fn main() { fn main() {