mirror of https://github.com/rust-lang/rust
15 lines
380 B
Rust
15 lines
380 B
Rust
pub fn foo(params: Option<&[&str]>) -> usize {
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params.unwrap().first().unwrap().len()
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}
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fn main() {
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let name = "Foo";
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let x = Some(&[name]);
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let msg = foo(x);
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//~^ ERROR mismatched types
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//~| expected enum `Option<&[&str]>`
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//~| found enum `Option<&[&str; 1]>`
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//~| expected `Option<&[&str]>`, found `Option<&[&str; 1]>`
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assert_eq!(msg, 3);
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}
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