26 lines
973 B
Rust
26 lines
973 B
Rust
// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// issue #21405
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// ignore-tidy-linelength
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struct Foo;
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fn foo<F>(f: F) where F: FnMut(Foo) {}
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fn main() {
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foo(|s| s.is_empty());
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//~^ ERROR no method named `is_empty` found
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//~^^ HELP #1: `std::iter::ExactSizeIterator`
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//~^^^ HELP #2: `core::slice::SliceExt`
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//~^^^^ HELP #3: `core::str::StrExt`
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//~^^^^^ HELP items from traits can only be used if the trait is implemented and in scope; the following traits define an item `is_empty`, perhaps you need to implement one of them:
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}
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