d4a2c94180
This commit cleans out a large amount of deprecated APIs from the standard library and some of the facade crates as well, updating all users in the compiler and in tests as it goes along.
37 lines
1.2 KiB
Rust
37 lines
1.2 KiB
Rust
// Copyright 2014 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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// ignore-tidy-linelength
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use std::ops::Range;
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trait Itble<'r, T, I: Iterator<Item=T>> { fn iter(&'r self) -> I; }
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impl<'r> Itble<'r, usize, Range<usize>> for (usize, usize) {
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fn iter(&'r self) -> Range<usize> {
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let &(min, max) = self;
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min..max
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}
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}
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fn check<'r, I: Iterator<Item=usize>, T: Itble<'r, usize, I>>(cont: &T) -> bool {
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//~^ HELP: consider using an explicit lifetime parameter as shown: fn check<'r, I: Iterator<Item = usize>, T: Itble<'r, usize, I>>(cont: &'r T)
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let cont_iter = cont.iter(); //~ ERROR: cannot infer
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let result = cont_iter.fold(Some(0), |state, val| {
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state.map_or(None, |mask| {
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let bit = 1 << val;
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if mask & bit == 0 {Some(mask|bit)} else {None}
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})
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});
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result.is_some()
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}
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fn main() {}
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