mirror of https://github.com/rust-lang/rust
27 lines
464 B
Rust
27 lines
464 B
Rust
use std::collections::HashSet;
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struct Foo {
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n: HashSet<isize>,
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}
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impl Foo {
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pub fn foo<F>(&mut self, mut fun: F) where F: FnMut(&isize) {
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for f in &self.n {
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fun(f);
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}
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}
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}
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fn bar(f: &mut Foo) {
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f.foo(
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//~^ ERROR cannot borrow `*f` as mutable
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|a| { //~ ERROR closure requires unique access to `f`
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f.n.insert(*a);
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})
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}
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fn main() {
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let mut f = Foo { n: HashSet::new() };
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bar(&mut f);
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}
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