090040bf40
for `~str`/`~[]`. Note that `~self` still remains, since I forgot to add support for `Box<self>` before the snapshot. How to update your code: * Instead of `~EXPR`, you should write `box EXPR`. * Instead of `~TYPE`, you should write `Box<Type>`. * Instead of `~PATTERN`, you should write `box PATTERN`. [breaking-change]
58 lines
1.3 KiB
Rust
58 lines
1.3 KiB
Rust
// Copyright 2012 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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// Check that functions can modify local state.
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fn sums_to(v: Vec<int> , sum: int) -> bool {
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let mut i = 0u;
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let mut sum0 = 0;
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while i < v.len() {
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sum0 += *v.get(i);
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i += 1u;
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}
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return sum0 == sum;
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}
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fn sums_to_using_uniq(v: Vec<int> , sum: int) -> bool {
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let mut i = 0u;
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let mut sum0 = box 0;
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while i < v.len() {
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*sum0 += *v.get(i);
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i += 1u;
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}
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return *sum0 == sum;
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}
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fn sums_to_using_rec(v: Vec<int> , sum: int) -> bool {
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let mut i = 0u;
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let mut sum0 = F {f: 0};
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while i < v.len() {
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sum0.f += *v.get(i);
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i += 1u;
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}
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return sum0.f == sum;
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}
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struct F<T> { f: T }
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fn sums_to_using_uniq_rec(v: Vec<int> , sum: int) -> bool {
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let mut i = 0u;
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let mut sum0 = F {f: box 0};
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while i < v.len() {
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*sum0.f += *v.get(i);
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i += 1u;
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}
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return *sum0.f == sum;
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}
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pub fn main() {
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}
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